Download - Planning Guide, 100K, 200K, 400K
EMC® VMAX3™ FamilySite Planning Guide
VMAX 100K, VMAX 200K, VMAX 400K,with HYPERMAX OSREVISION 8.1
Copyright © 2014-2017 Dell Inc. or its subsidiaries. All rights reserved.
Published June 2017
Dell believes the information in this publication is accurate as of its publication date. The information is subject to change without notice.
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Published in the USA.
EMC CorporationHopkinton, Massachusetts 01748-91031-508-435-1000 In North America 1-866-464-7381www.EMC.com
2 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
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Preface 9Revision history...........................................................................................12
Pre-planning tasks 15Before you begin......................................................................................... 16Tasks to review........................................................................................... 16
Delivery and transportation 19Delivery arrangements................................................................................20Pre-delivery considerations........................................................................ 20Moving up and down inclines......................................................................20Shipping and storage environmental requirements......................................21
Specifications 23Radio frequency interference..................................................................... 24
Recommended minimum distance from RF emitting device...........24Power consumption and heat dissipation....................................................25
Adaptive cooling............................................................................ 26Airflow........................................................................................................ 27Air volume, air quality, and temperature..................................................... 28
Air volume specifications............................................................... 28Temperature, altitude, and humidity ranges...................................28Temperature and humidity range recommendations...................... 28Air quality requirements.................................................................29
Shock and vibration....................................................................................30Sound power and sound pressure...............................................................30Hardware acclimation times........................................................................ 31Optical multimode cables............................................................................32
Open systems host and SRDF connectivity................................... 32
Data Center Safety and Remote Support 35Fire suppressant disclaimer........................................................................ 36Remote support..........................................................................................36
Physical weight and space 39Floor load-bearing capacity........................................................................ 40Raised floor requirements...........................................................................40Physical space and weight.......................................................................... 41
Position Bays 43
Figures
Tables
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
CONTENTS
Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS 3
System bay layouts.................................................................................... 44Adjacent layouts, single-engine array............................................ 45Adjacent layouts, dual-engine array............................................... 46Dispersed layouts, single-engine array........................................... 47Dispersed layout, dual-engine array............................................... 48Adjacent and dispersed (mixed) layout ......................................... 49
Dimensions for array layouts....................................................................... 51Tile placement............................................................................................ 52Caster and leveler dimensions.................................................................... 53
Power cabling, cords and connectors 55Power distribution unit .............................................................................. 56Wiring configurations................................................................................. 58Power interface.......................................................................................... 61Customer input power cabling.....................................................................61Best practices: Power configuration guidelines...........................................61Power extension cords, connectors, and wiring..........................................62
Single-phase..................................................................................63Three-phase (International (Wye))................................................68Three-phase (North American (Delta)).......................................... 71Three-phase (Wye, Domestic).......................................................73
Third Party Racking Option 75Computer room requirements ....................................................................76Customer rack requirements ......................................................................77Third party racks with vertical PDUs — RPQ Required ............................. 79
Requirements for third party racks with vertical PDUs (rear-facing)...................................................................................................... 80Requirements for third party racks with vertical PDUs (inward-facing) .......................................................................................... 82
Chassis to chassis grounding......................................................................83
Optional kits 85Overhead routing kit...................................................................................86Dispersion kits............................................................................................ 86Securing kits...............................................................................................87GridRunner kit and customer-supplied cable trough................................... 87
Best Practices for AC Power Connections 89Best practices overview for AC power connections....................................90Selecting the proper AC power connection procedure................................ 91Procedure A: Working with the customer's electrician onsite.....................92
Procedure A, Task 1: Customer's electrician.................................. 93Procedure A, Task 2: EMC Customer Engineer .............................94Procedure A, Task 3: Customer's electrician................................. 98
Procedure B: Verify and connect................................................................99Procedure C: Obtain customer verification............................................... 100PDU labels................................................................................................ 100
PDU label part numbers............................................................... 100Applying PDU labels, VMAX3 Family............................................. 101
Ground the cabinet.................................................................................... 101AC power specifications............................................................................103
Chapter 7
Chapter 8
Chapter 9
Appendix A
CONTENTS
4 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Typical airflow in a hot/cold aisle environment........................................................... 27Adjacent layout, single-engine array........................................................................... 45Adjacent layout, dual-engine array..............................................................................46Dispersed layout, single-engine array..........................................................................47Dispersed layout, dual-engine, front view................................................................... 48Adjacent and dispersed (mixed) layout, single-engine array....................................... 49Adjacent and dispersed (mixed) layout, dual-engine array..........................................50Layout Dimensions, VMAX3 Family............................................................................. 51Placement with floor tiles, VMAX3 Family.................................................................. 52Caster and leveler dimensions.................................................................................... 53Power distribution unit (PDU) without installed wire bales, rear view.........................56Power distribution unit (PDU) with installed wire bales, rear view..............................57Single-phase, horizontal 2U PDU internal wiring.........................................................58Three-phase (Delta), horizontal 2U PDU internal wiring.............................................59Three-phase (Wye), horizontal 2U PDU internal wiring.............................................. 60Single-phase: E-PW40U-US.......................................................................................65Single-phase: E-PW40URUS......................................................................................66Single-phase: E-PW40UIEC3..................................................................................... 66Single-phase: E-PW40UASTL.....................................................................................67Single-phase: E-PW40L730........................................................................................67Flying leads, three-phase, international: E-PC3YAFLE, ............................................. 69Three-phase, international: E-PCBL3YAG.................................................................. 70Three-phase, North American, Delta: E-PCBL3DHR...................................................72Three-phase, North American, Delta: E-PCBL3DHH...................................................72Three-phase, domestic (Black and Gray): E-PCBL3YL23P.........................................74Customer rack dimension requirements ..................................................................... 78Requirements for customer rack with rear-facing, vertical PDUs............................... 80Requirements for third party rack with inward-facing, vertical PDUs......................... 82Two independent customer-supplied PDUs................................................................ 90Circuit breakers ON — AC power within specification............................................... 93Circuit breakers OFF — No AC power........................................................................93System bay power tee breakers (OFF = pulled out)................................................... 94Connecting AC power, single-phase........................................................................... 95Connecting AC power, three-phase............................................................................96Power zone connections.............................................................................................97PDU label , single-phase and three-phase..................................................................101Label placement— Customer PDU Information......................................................... 101
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FIGURES
Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS 5
FIGURES
6 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Typographical conventions used in this content..........................................................10Revision history...........................................................................................................12Before you begin......................................................................................................... 16Shipping and storage environmental requirements......................................................21Minimum distance from RF emitting devices.............................................................. 24Power consumption and heat dissipation....................................................................25Airflow diagram key.................................................................................................... 27Maximum air volume...................................................................................................28Environmental operating ranges................................................................................. 28Temperature and humidity..........................................................................................28Platform shock and vibration......................................................................................30Sound power and sound pressure levels, A-weighted................................................. 30Hardware acclimation times (systems and components).............................................31OM3 and OM4 Fibre cables — 50/125 micron optical cable.......................................32Space and weight requirements.................................................................................. 41Adjacent layout diagram key.......................................................................................45Adjacent layout diagram key.......................................................................................46Caster and leveler dimensions diagram key.................................................................53Extension cords and connectors options – single-phase.............................................63Extension cords and connectors options – three-phase international (Wye)..............68Extension cords and connectors options – three-phase North American (Delta)........ 71Extension cords and connectors options – three-phase Wye, domestic..................... 73Overhead routing models............................................................................................86Dispersion kit model numbers..................................................................................... 86Securing kit models.................................................................................................... 87Bottom routing model.................................................................................................87Procedure options for AC power connection ..............................................................91VMAX3 Family label part numbers, EMC racks .........................................................100Input power requirements - single-phase, North American, International, Australian..................................................................................................................................103Input power requirements - three-phase, North American, International, Australian..................................................................................................................................104
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TABLES
Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS 7
TABLES
8 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Preface
As part of an effort to improve its product lines, EMC periodically releases revisions ofits software and hardware. Therefore, some functions described in this documentmight not be supported by all versions of the software or hardware currently in use.The product release notes provide the most up-to-date information on productfeatures.
Contact your EMC representative if a product does not function properly or does notfunction as described in this document.
Note
This document was accurate at publication time. New versions of this document mightbe released on EMC Online Support (https://support.emc.com). Check to ensure thatyou are using the latest version of this document.
PurposeThis document is intended for use by customers and/or company representatives whowant to plan the purchase and installation of a VMAX3 Family system.
AudienceThis document is intended for use by customers or company representatives.
Related documentationThe following documentation portfolios contain documents related to the hardwareplatform and manuals needed to manage your software and storage systemconfiguration. Also listed are documents for external components which interact withyour array.
EMC VMAX3 Family Product Guide for VMAX 100K, VMAX 200K, VMAX 400K withHYPERMAX OS
Provides product information regarding the purchase of a VMAX3 Family 100K,200K, 400K.
EMC VMAX Securing Kit Installation Guide
Describes how to install the securing kit on a VMAX3 Family array or VMAX AllFlash array.
EMC VMAX Best Practices Guide for AC Power Connections
Describes the best practices to assure fault-tolerant power to a VMAX3 Familyarray or VMAX All Flash array.
EMC VMAX Power-down/Power-up Procedure
Describes how to power-down and power-up a VMAX3 Family array or VMAX AllFlash array.
HYPERMAX OS 5977.xxx.xxx for EMC VMAX3 Family and VMAX All Flash Release Notes
Describes new features and any known limitations.
Special notice conventions used in this documentEMC uses the following conventions for special notices:
Preface 9
DANGER
Indicates a hazardous situation which, if not avoided, will result in death orserious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death orserious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor ormoderate injury.
NOTICE
Addresses practices not related to personal injury.
Note
Presents information that is important, but not hazard-related.
Typographical conventionsEMC uses the following type style conventions in this document:
Table 1 Typographical conventions used in this content
Bold Used for names of interface elements, such as names of windows,dialog boxes, buttons, fields, tab names, key names, and menu paths(what the user specifically selects or clicks)
Italic Used for full titles of publications referenced in text
Monospace Used for:
l System code
l System output, such as an error message or script
l Pathnames, filenames, prompts, and syntax
l Commands and options
Monospace italic Used for variables
Monospace bold Used for user input
[ ] Square brackets enclose optional values
| Vertical bar indicates alternate selections - the bar means “or”
{ } Braces enclose content that the user must specify, such as x or y orz
... Ellipses indicate nonessential information omitted from the example
Where to get helpSupport, product and licensing information can be obtained as follows:
Preface
10 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Product information
EMC technical support, documentation, release notes, software updates, orinformation about EMC products can be obtained on the https://support.emc.com site (registration required).
Technical support
To open a service request through the https://support.emc.com site, you musthave a valid support agreement. Contact your EMC sales representative fordetails about obtaining a valid support agreement or to answer any questionsabout your account.
Your commentsYour suggestions help us improve the accuracy, organization, and overall quality of thedocumentation. Send your comments and feedback to: [email protected]
Preface
11
Revision history
Table 2 Revision history
Revision Description and/or change HYPERMAXOS
8.1 Added recommendation for chassis to chassis groundingfor multiple bay systems.
HYPERMAX OS5977.1125.1125
8.0 Modified power consumption and heat dissipationspecifications to include steady state and maximumvalues.
HYPERMAX OS5977.1125.1125
7.0 Corrected formula for 3rd party rack cabinet widthrequirements.
HYPERMAX OS+ Q3 2016Service Pack
6.0 Updated wiring configuration diagrams and content fornew 2U PDUs.Updated power distribution unit recommendations foroverhead power.
HYPERMAX OS+ Q3 2016Service Pack
5.0 l Minor edits for consistency and readability.
l Added new table row and values for "Storage time(unpowered)" in the topic, "Shipping and storageenvironmental requirements."
l Added line item to Optical multimode cables topic:OM4 cables are used for SRDF connectivity over 16Gb/s Fibre Channel I/O modules.
HYPERMAX OS+ Q1 2016Service Pack
4.2 l Added information and diagrams for third party rackswith vertical PDUs.
l Updated heat dissipation value for system bay 2 in adual engine system.
n For a 200K: Max heat dissipation changed from30,975 to 28,912 Btu/Hr.
n For a 400K: Max heat dissipation changed from30,975 to 29,688 Btu/Hr.
l Added the following note to PDU and wiringconfiguration topics:
Note
The PDU AC power cords (single-phase and three-phase) extend 74" (188cm) from the PDU chassisand are designed to reach to the bay floor egress forconnection to the customer power supply. 15'(4.57m) extension cables are provided.
Q3 2015 ServicePack
4.1 l Update: Statement re: redundant PDUs.
l Added note to Power and heat dissipation topic.
Q3 2015 ServicePack
Preface
12 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Table 2 Revision history (continued)
Revision Description and/or change HYPERMAXOS
l Updated rack diagram for third party rackrequirements.
4.0 Updates:
l Version numbering (to 4.0).
l Removed dual-engine dispersion reference in Systemlayouts topic: "With dual-engine dispersion, bayplacement can be wherever the customer wants inthe data center."
Q3 2015 ServicePack
3.3 Updates:
l 3rd party customer rack dimension requirementsgraphic.
l Single and dual-engine layout graphics.
Q3 2015 ServicePack
3.2 New: NOTICE in Best practices overview for AC powerconnections.
Q2 2015 ServicePack
3.1 Update: Customer-to-system 3-phase connectors. Q2 2015 ServicePack
3 Update: Environmental operating ranges table. 5977.250.189
2 Update: Dual-engine layout graphic. 5977.250.189
1 First release of the VMAX 100K, 200K, and 400K arrayswith EMC HYPERMAX OS 5977.
5977.250.189
Preface
Revision history 13
Preface
14 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 1
Pre-planning tasks
This chapter includes:
l Before you begin.................................................................................................16l Tasks to review...................................................................................................16
Pre-planning tasks 15
Before you beginVMAX3 Family arrays are designed for installation in data centers that provide:
l Sufficient physical space
l Controlled temperature and humidity
l Airflow and ventilation
l Power and grounding
l System cable routing facilities
l Fire protection
Raised floors are preferred.
For information regarding overhead cable routing, see: Overhead routing kit on page86.
To prepare the site for an array, meet with your EMC Systems Engineer and EMCCustomer Engineer and determine what is needed to prepare for delivery andinstallation.
One or more sessions may be necessary to finalize installation plans.
Tasks to reviewThe following table provides a list of tasks to review during the planning process:
Table 3 Before you begin
Task Comments and/or Provide
Identify power requirements with customer and customerelectrician.
External AC power must be supplied from an independentcustomer-supplied power distribution unit (PDU).
EMC recommends that the customer’s electrician be availableat the installation site for regular and third party rackedarrays.
Best Practices for AC Power Connections on page 89provides details.
For customer-supplied third party rack support, see thedetailed physical requirements in Third Party Racking Optionon page 75.
The field representative working the order must:
l Review the requisite information regarding the third partyracking option.
l In Sizer, select the desired configuration. In the
Hardware Options screen, under Rack Type, select
Third Party.
Complete the Installation Planning Task Sheet and PresiteSurvey in DXCX.
l Connection for ConnectEMC to dial home to the EMCSupport Center. Data Center Safety and Remote Supporton page 35 provides additional details on remotesupport.
Pre-planning tasks
16 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Table 3 Before you begin (continued)
Task Comments and/or Provide
l Power, cooling and ventilation, humidity control, floorload capability, system placement, and service clearancesas required in the data center.
Pre-planning tasks
Tasks to review 17
Pre-planning tasks
18 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 2
Delivery and transportation
This chapter includes:
l Delivery arrangements....................................................................................... 20l Pre-delivery considerations................................................................................20l Moving up and down inclines..............................................................................20l Shipping and storage environmental requirements............................................. 21
Delivery and transportation 19
Delivery arrangementsDelivery within the United States or Canada is by air-ride truck with custom-designedshipping material, crate, and pallet. International delivery normally involves air freight.
Unless otherwise instructed, the EMC Traffic Department arranges for deliverydirectly to the customer’s computer room. To ensure successful delivery of thesystem, EMC has formed partnerships with specially selected moving companies.These companies have moving professionals trained in the proper handling of large,sensitive equipment. These companies provide the appropriate personnel, floorlayments, and any ancillary moving equipment required to facilitate delivery. Movingcompanies should check general guidelines, weights, and dimensions.
NOTICE
Inform EMC of any labor union-based restrictions or security clearance requirementsprior to delivery.
Pre-delivery considerationsTake into account the following considerations prior to the delivery at your site:
l Weight capacities of the loading dock, tailgate, and service elevator if delivery is toa floor other than the receiving floor.
l Length and thickness of covering required for floor protection.
l Equipment ramp availability if the receiving floor is not level with computer roomfloor.
l Set up the necessary network and gateway access to accommodate EMC SecureRemote Support (ESRS) so that it will be available and operable for the installationdate.
Moving up and down inclinesTo prevent tipping when moving up and down inclines, the following guidelines arerecommended:
l When moving cabinets, all doors/drawers should be closed.
l When moving the cabinet down an incline, the front of the cabinet must go first.
l When moving the cabinet up an incline, the rear of the bay goes last.
All portions of the bay will clear ramp and threshold slopes up to 1:10 (rise to runratio), per Code of Federal Regulations — ADA Standards for Accessible Design, 28CFR Part 36.
Delivery and transportation
20 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Shipping and storage environmental requirementsThe following table provides the environmental requirements for shipping and storage:
Table 4 Shipping and storage environmental requirements
Condition Setting
Ambient temperature -40° to 149° F (-40° to 65° C)
Temperature gradient 43.2° F/hr (24° C/hr)
Relative humidity 10% to 90% noncondensing
Maximum altitude 25,000 ft (7619.7 m)
Storage time (unpowered) Recommendation: Do not exceed 6consecutive months of unpowered storage.
Delivery and transportation
Shipping and storage environmental requirements 21
Delivery and transportation
22 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 3
Specifications
This chapter includes:
l Radio frequency interference.............................................................................24l Power consumption and heat dissipation........................................................... 25l Airflow................................................................................................................27l Air volume, air quality, and temperature.............................................................28l Shock and vibration........................................................................................... 30l Sound power and sound pressure...................................................................... 30l Hardware acclimation times................................................................................31l Optical multimode cables................................................................................... 32
Specifications 23
Radio frequency interferenceElectro-magnetic fields, which include radio frequencies can interfere with theoperation of electronic equipment. EMC Corporation products have been certified towithstand radio frequency interference (RFI) in accordance with standardEN61000-4-3. In Data Centers that employ intentional radiators, such as cell phonerepeaters, the maximum ambient RF field strength should not exceed 3 Volts /meter.
The field measurements should be taken at multiple points in close proximity to EMCCorporation equipment. It is recommended to consult with an expert prior to installingany emitting device in the Data Center. In addition, it may be necessary to contract anenvironmental consultant to perform the evaluation of RFI field strength and addressthe mitigation efforts if high levels of RFI are suspected.
The ambient RFI field strength is inversely proportional to the distance and powerlevel of the emitting device.
Recommended minimum distance from RF emitting deviceThe following table provides the recommended minimum distances between EMCarrays and RFI emitting equipment. Use these guidelines to verify that cell phonerepeaters or other intentional radiator devices are at a safe distance from the EMCCorporation equipment.
Table 5 Minimum distance from RF emitting devices
Repeater power levela Recommended minimum distance
1 Watt 9.84 ft (3 m)
2 Watt 13.12 ft (4 m)
5 Watt 19.69 ft (6 m)
7 Watt 22.97 ft (7 m)
10 Watt 26.25 ft (8 m)
12 Watt 29.53 ft (9 m)
15 Watt 32.81 ft (10 m)
a. Effective Radiated Power (ERP)
Specifications
24 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Power consumption and heat dissipationEMC provides the EMC Power Calculator to refine the power and heat figures to moreclosely match your array. Contact your EMC Sales Representative or use the EMCPower Calculator for specific supported configurations. The following table providescalculations of maximum power and heat dissipation.
NOTICE
Power consumption and heat dissipation details vary based on the number of systemand storage bays. Ensure that the installation site meets these worst caserequirements.
Table 6 Power consumption and heat dissipation
VMAX 100K VMAX 200K VMAX 400K
Maximum powerand heatdissipation at<26°C and>35°C a
Maximumtotal powerconsumption<26°C />35°C(kVA)
Maximumheatdissipation<26°C />35°C(Btu/Hr)
Maximumtotal powerconsumption<26°C />35°C(kVA)
Maximumheatdissipation<26°C />35°C(Btu/Hr)
Maximumtotal powerconsumption<26°C />35°C(kVA)
Maximumheatdissipation<26°C />35°C(Btu/Hr)
System bay 1Single engine
8.27 / 10.8 28,201 /36,828
8.37 / 10.9 28,542 /37,169
8.57 / 11.1 29,224 /37,851
System bay 2Single engineb
8.13 / 10.4 27,723 /35,464
8.33 / 10.6 28,405 /36,146
8.43 / 10.7 28,746 /36,487
System bay 1Dual engine
6.44 / 8.8 21,960 /30,008
6.74 / 9.1 22,983 /31,031
7.04 / 9.4 24,006 /32,054
System bay 2Dual engineb
N/A 6.7 / 8.8 22,847 /30,008
6.9 / 9 23,529 /30,690
a. Power values and heat dissipations shown at >35°C reflect the higher power levels associated with both the battery rechargecycle, and the initiation of high ambient temperature adaptive cooling algorithms. Values at <26°C are reflective of more steadystate maximum values during normal operation.
b. Power values for system bay 2 and all subsequent system bays where applicable.
Specifications
Power consumption and heat dissipation 25
Adaptive coolingThe systems apply adaptive cooling based on customer environments to save energy.Engines and DAEs access thermal data through components located within theirenclosures. Based on ambient temperature and internal activity, they set the coolingfan speeds. As the inlet temperatures increase, the adaptive cooling increases the fanspeeds, with the resulting platform power increasing up to the maximum values shownbelow. These values, along with the SPS recharge power consumption, contribute tothe maximum system power consumption values over 35°C shown in Table 6 on page25.
l DAE120 (2.5 Drives) = 305VA - 1024 BTU/hr
l DAE60 (3.5 Drives) = 265VA - 904 BTU/hr
l Engine = 80VA - 273 BTU/hr
Specifications
26 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
AirflowSystems are designed for typical hot aisle/cold aisle data center cooling environmentsand installation:
l On raised or nonraised floors.
l In hot aisle/cold aisle arrangements.
The airflow provides less mixing of hot and cold air, which can result in a higher returntemperature to the computer room air conditioner (CRAC). This promotes better heattransfer outside the building and achieves higher energy efficiency and lower PowerUsage Effectiveness (PUE). Additional efficiency can be achieved by sequestering theexhaust air completely and connecting ducts directly to a CRAC unit or to the outside.
Best practice is to place a perforated floor tile in front of each bay to allow adequatecooling air supply when installing on a raised floor. The following figure shows typicalairflow in a hot aisle/ cold aisle environment.
Figure 1 Typical airflow in a hot/cold aisle environment
5
6
5
4 4
8
7 99
1 1
22
3
Table 7 Airflow diagram key
# Description # Description
1 To refrigeration unit 6 Hot aisle
2 Suspended ceiling 7 Perforated rear doors
3 Air return 8 Pressurized floor
4 System bays 9 Perforated floor tile
5 Cold aisle
Specifications
Airflow 27
Air volume, air quality, and temperatureThe installation site must meet certain recommended requirements for air volume,temperature, altitude, and humidity ranges, and air quality.
Air volume specificationsThe following table provides the recommended maximum amount of air volume.
Table 8 Maximum air volume
Bay Units
System bay, single-engine 1,320 cfm (37.5 m3/min)
System bay, dual-engine 1,325 cfm (37.4 m3/min)
Temperature, altitude, and humidity rangesThe following table provides the recommended environmental operating ranges.
Table 9 Environmental operating ranges
Condition System
Operating temperature and operatingaltitude a
l 50° – 90° F (10° to 32° C) at 7,500 ft(2,286 m)
l 50° – 95° F (10° to 35° C) at 3,317 ft(950 m)
Operating altitude (maximum) 10,000 ft (3,048 m) 1.1° derating per 1,000ft b
Operating relative humidity extremes 20% to 80% noncondensing
Operating rate of temperature change 9° F/Hr (5° C/Hr)
Thermal excursion 122° F (48° C) (up to 24 hours)
a. These values apply to the inlet temperature of any component within the bay.b. Derating equals an operating temperature of 29.25° C
Temperature and humidity range recommendationsThe following table provides the recommended operating and humidity ranges toensure long-term reliability, especially in environments where air quality is a concern.
Table 10 Temperature and humidity
Condition System
Operating temperature range 64°— 75° F (18° to 24° C)
Operating relative humidity range 40 — 55%
Specifications
28 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Air quality requirementsVMAX3 arrays are designed to be consistent with the requirements of the AmericanSociety of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE)Environmental Standard Handbook and the most current revision of ThermalGuidelines for Data Processing Environments, ASHRAE TC 9.9 2011.
The arrays are best suited for Class 1A Datacom environments, which consist of tightlycontrolled environmental parameters, including temperature, dew point, relativehumidity and air quality. These facilities house mission critical equipment and aretypically fault tolerant, including the air conditioners. In a data center environment, ifthe air conditioning fails and the temperature is lost, a vault may occur to protectdata.
The data center should maintain a cleanliness level as identified in ISO 14664-1, class 8for particulate dust and pollution control. The air entering the data center should befiltered with a MERV 11 filter or better. The air within the data center should becontinuously filtered with a MERV 8 or better filtration system. In addition, effortsshould be maintained to prevent conductive particles, such as zinc whiskers, fromentering the facility.
The allowable relative humidity level is 20–80% non condensing, however, therecommended operating environment range is 40–55%. For data centers withgaseous contamination, such as high sulfur content, lower temperatures and humidityare recommended to minimize the risk of hardware corrosion and degradation. Ingeneral, the humidity fluctuations within the data center should be minimized. It is alsorecommended that the data center be positively pressured and have air curtains onentry ways to prevent outside air contaminants and humidity from entering thefacility.
For facilities below 40% relative humidity (RH), EMC recommends using groundingstraps when contacting the equipment to avoid the risk of electrostatic discharge(ESD), which can harm electronic equipment.
Note
As part of an ongoing monitoring process for the corrosiveness of the environment,EMC recommends placing copper and silver coupons (per ISA 71.04-1985, Section 6.1Reactivity) in airstreams representative of those in the data center. The monthlyreactivity rate of the coupons should be less than 300 Angstroms. When monitoredreactivity rate is exceeded, the coupon should be analyzed for material species and acorrective mitigation process emplaced.
Specifications
Air quality requirements 29
Shock and vibrationThe following table provides the platform shock and vibration maximums and thetransportation shock and vibration levels (in the vertical direction).
Note
Levels shown apply to all three axes, and should be measured with an accelerometer inthe equipment enclosures within the cabinet.
Table 11 Platform shock and vibration
Platform condition Response measurement level (shouldnot exceed)
Non operational shock 10 G's, 7 ms duration
Operational shock 3 G's, 11 ms duration
Non operational random vibration .40 Grms, 5-500Hz, 30 minutes
Operational random vibration .21 Grms, 5-500Hz, 10 minutes
Packaged system condition
Transportation shock 10 G's, 12 ms duration
Transportation random vibration 1.15 Grms, 1 hour
Frequency range 1-200 Hz
Sound power and sound pressureThe following table provides the sound power and sound pressure levels.
Table 12 Sound power and sound pressure levels, A-weighted
Configuration Sound power levels(LWAd) (B) a
Sound pressure levels(LpA) (dB) b
System bay (max) 7.9 66
System bay (min) 7.6 63
a. Declared noise emissions with.3B correction factor added per ISO9296.b. Measured at the four bystander positions per ISO7779
Specifications
30 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Hardware acclimation timesSystems and components must acclimate to the operating environment beforeapplying power. This requires the unpackaged system or component to reside in theoperating environment for up to 16 hours in order to thermally stabilize and preventcondensation.
Table 13 Hardware acclimation times (systems and components)
If the last 24 hours of theTRANSIT/STORAGEenvironment was this:
…and the OPERATINGenvironment is this:
…then let the systemor componentacclimate in the newenvironment this manyhours:
Temperature Humidity
Nominal68-72°F(20-22°C)
Nominal40-55% RH
Nominal 68-72°F (20-22°C)40-55% RH
0-1 hour
Cold<68°F (20°C)
Dry<30% RH
<86°F (30°C) 4 hours
Cold<68°F (20°C)
Damp≥30% RH
<86°F (30°C) 4 hours
Hot>72°F (22°C)
Dry<30% RH
<86°F (30°C) 4 hours
Hot>72°F (22°C)
Humid30-45% RH
<86°F (30°C) 4 hours
Humid45-60% RH
<86°F (30°C) 8 hours
Humid≥60% RH
<86°F (30°C) 16 hours
Unknown <86°F (30°C) 16 hours
NOTICE
l If there are signs of condensation after the recommended acclimation time haspassed, allow an additional eight (8) hours to stabilize.
l Systems and components must not experience changes in temperature andhumidity that are likely to cause condensation to form on or in that system orcomponent. Do not exceed the shipping and storage temperature gradient of45°F/hr (25°C/hr).
Specifications
Hardware acclimation times 31
Optical multimode cablesOptical multimode 3 (OM3) and optical multimode 4 (OM4) cables are available foropen systems host and SRDF connectivity. To obtain OM3 or OM4 cables, contactyour local sales representative.
l OM3 cables are used for SRDF connectivity over: 4, 8, and 10 Gb/s Fibre ChannelI/O modules, 10 GbE and 1 GbE I/O modules.
l OM4 cables are used for SRDF connectivity over 16 Gb/s Fibre Channel I/Omodules.
l OM4 cables are used with 16 Gb/s Fibre Channel I/O modules to provide FibreChannel connection to switches. Distances of up to 190 m over 8 Gb/s FibreChannel and 125 m over 16 Gb/s Fibre Channel modules are supported.OM2 or OM3 cables can be used, but distance is reduced.
l OM3 cables support 8 and 16 Gb/s Fibre Channel distances up to 150 m or 16 Gb/sFibre Channel distances up to 100 m.
l OM2 cables support 8 Gb/s Fibre Channel distances up to 50 m or 10 Gb/sEthernet up to 82 m.
Note
OM2 cables can be used, but they will not support 8 Gb/s Fibre Channel (SRDF)distances greater then 50 m. For longer distances, use OM3 cables.
Open systems host and SRDF connectivityThe following table provides the OM3 and OM4 cables.
Table 14 OM3 and OM4 Fibre cables — 50/125 micron optical cable
Model number Description
SYM-OM3-1M LC-LC, 1 meter
SYM-OM3-3M LC-LC, 3 meter
SYM-OM3-5M LC-LC, 5 meter
SYM-OM3-10M LC-LC, 10 meter
SYM-OM3-30M LC-LC, 30 meter
SYM-OM3-50M LC-LC, 50 meter
SYM-OM3-100M LC-LC, 100 meter
SYM-OM4-1M LC- LC, 1 meter
SYM-OM4-3M LC- LC, 3 meter
SYM-OM4-5M LC- LC, 5 meter
SYM-OM4-10M LC- LC, 10 meter
SYM-OM4-30M LC- LC, 30 meter
SYM-OM4-50M LC- LC, 50 meter
Specifications
32 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Table 14 OM3 and OM4 Fibre cables — 50/125 micron optical cable (continued)
Model number Description
SYM-OM4-100M LC- LC, 100 meter
Specifications
Open systems host and SRDF connectivity 33
Specifications
34 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 4
Data Center Safety and Remote Support
This chapter includes:
l Fire suppressant disclaimer................................................................................ 36l Remote support................................................................................................. 36
Data Center Safety and Remote Support 35
Fire suppressant disclaimerFire prevention equipment in the computer room should always be installed as anadded safety measure. A fire suppression system is the responsibility of the customer.When selecting appropriate fire suppression equipment and agents for the datacenter, choose carefully. An insurance underwriter, local fire marshal, and localbuilding inspector are all parties that you should consult during the selection a firesuppression system that provides the correct level of coverage and protection.
Equipment is designed and manufactured to internal and external standards thatrequire certain environments for reliable operation. We do not make compatibilityclaims of any kind nor do we provide recommendations on fire suppression systems. Itis not recommended to position storage equipment directly in the path of highpressure gas discharge streams or loud fire sirens so as to minimize the forces andvibration adverse to system integrity.
Note
The previous information is provided on an “as is” basis and provides norepresentations, warranties, guarantees or obligations on the part of our company.This information does not modify the scope of any warranty set forth in the terms andconditions of the basic purchasing agreement between the customer and EMC .
Remote supportEMC Secure Remote Support (ESRS) is an IP-based, automated, connect home andremote support solution. ESRS is the preferred method of connectivity. EMCrecommends using two connections with ESRS for connection to the redundantmanagement module control station (MMCS).
ESRS customers must provide the following:
l An IP network with Internet connectivity.
l Capability to add Gateway Client servers and Policy Manager servers to thecustomer network.
l Network connectivity between the servers and EMC devices to be managed byESRS
l Internet connectivity to EMC’s ESRS infrastructure by using outbound ports.
l Network connectivity between ESRS Client(s) and Policy Manager.
Once installed, ESRS monitors the array and automatically notifies EMC CustomerService in the event of a problem. If an error is detected, an EMC support professionalutilizes the secure connection to establish a remote support session to diagnose, and ifnecessary, perform a repair.
EMC Customer Service can use ESRS to:
l Perform downloads of updated software in lieu of a site visit.
l Deliver license entitlements directly to the array.
Data Center Safety and Remote Support
36 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
NOTICE
EMC provides an optional modem that uses a regular telephone line or operates with aPBX. EMC recommends using two connections to the redundant management modulecontrol station (MMCS).
The EMC Secure Remote Support Gateway Site Planning Guide provides additionalinformation.
Data Center Safety and Remote Support
Remote support 37
Data Center Safety and Remote Support
38 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 5
Physical weight and space
This chapter includes:
l Floor load-bearing capacity................................................................................40l Raised floor requirements.................................................................................. 40l Physical space and weight.................................................................................. 41
Physical weight and space 39
Floor load-bearing capacityStorage arrays can be installed on raised floors. Customers must be aware that theload-bearing capacity of the data center floor is not readily available through a visualinspection of the floor. The only definitive way to ensure that the floor is capable ofsupporting the load associated with the array is to have a certified architect or thedata center design consultant inspect the specifications of the floor to ensure that thefloor is capable of supporting the array weight.
CAUTION
l Customers are ultimately responsible for ensuring that the floor of the datacenter on which the array is to be configured is capable of supporting thearray weight, whether the array is configured directly on the data center flooror on a raised floor supported by the data center floor.
l Failure to comply with these floor loading requirements could result in severedamage to the storage array, the raised floor, subfloor, site floor and thesurrounding infrastructure should the raised floor, subfloor or site floor fail.
l Notwithstanding anything to the contrary in any agreement between EMCand the customer, EMC fully disclaims any and all liability for any damage orinjury resulting from the customer’s failure to ensure that the raised floor,subfloor and/or site floor are capable of supporting the storage array weight.The customer assumes all risk and liability associated with such failure.
Raised floor requirementsBest practice is to use 24 x 24 inch heavy-duty, concrete-filled steel floor tiles. If adifferent size or type of tile is used, the customer must ensure that the tiles have aminimum load rating that is sufficient for supporting the storage array weight. Ensureproper physical support of the system by following requirements that are based on theuse of 24 x 24 in. (61 x 61 cm) heavy-duty, concrete-filled steel floor tiles.
Raised floors must meet the following requirements:
l Floor must be level.l Floor tiles and stringers must be rated to withstand concentrated loads of two
casters each that weigh up to 700 lb (317.5 kg).
Note
Caster weights are measured on a level floor. The front of the array weighs more thanthe rear of the configuration.
l Floor tiles and stringers must be rated for a minimum static ultimate load of 3,000lb (1,360.8 kg).
l Floor tiles must be rated for a minimum of 1,000 lb (453.6 kg) on rolling load.l For floor tiles that do not meet the minimum rolling load rate, EMC recommends
the use of coverings, such as plywood, to protect floors during system roll.l Floor tile cutouts weaken the tile. An additional pedestal mount adjacent to the
cutout of a tile can minimize floor tile deflection. The number and placement of
Physical weight and space
40 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
additional pedestal mounts relative to a cutout should be in accordance with thetile manufacturer’s recommendations.
l Take care when positioning the bays to make sure that a caster is not moved into acutout. Cutting tiles per specifications ensures the proper caster placement.
l Use or create no more than one floor tile cutout that is no more than 8 in. (20 cm)wide by 6 in. (15 cm) deep in each 24 x 24 in. (61 x 61 cm) floor tile.
l Ensure that the weight of any other objects in the data center does notcompromise the structural integrity of the raised floor or the subfloor (nonraisedfloor) of the data center.
Physical space and weightThe following table provides the physical space, maximum weights, and clearance forservice.
Table 15 Space and weight requirements
Bayconfigurations a
Heightb
(in/cm)Widthc
(in/cm)Depthd
(in/cm)Weight(max lbs/kg)
System bay, single-engine
75/190 24/61 47/119 2065/937
System bay, dual-engine
75/190 24/61 47/119 1860/844
a. Clearance for service/airflow is the front at 42 in (106.7 cm) front and the rear at 30 in(76.2 cm).
b. An additional 18 in (45.7 cm) is recommended for ceiling/top clearance.c. Measurement includes .25 in. (0.6 cm) gap between bays.d. Includes front and rear doors.
Physical weight and space
Physical space and weight 41
Physical weight and space
42 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 6
Position Bays
This chapter includes:
l System bay layouts............................................................................................ 44l Dimensions for array layouts...............................................................................51l Tile placement....................................................................................................52l Caster and leveler dimensions............................................................................53
Position Bays 43
System bay layoutsThe number of bays and the system layout depend on the array model, the customerrequirements, and the space and organization of the customer data center.
Storage arrays can be placed in the following layouts:
l Adjacent — all bays are positioned side-by-side.
l Dispersed — dispersed layouts are provided with longer fabric and Ethernet cablebundles that allow 82 ft (25 m) of separation between system bay 1 and systembays 2 through 8.
Dispersed system bays require dispersed cable and optics kits and one set of sideskins for each dispersed system bay in the configuration.
Note
n The routing strategy (beneath raised floor or overhead), site requirements, andthe use of GridRunners (optional) or cable troughs can cause the actualdistances to vary.
n GridRunners are used to create a strain relief for all dispersed, under the floor,cable bundles. GridRunners are installed in the locations where the cable bundleenters and exits the area under the raised floor.
l Adjacent and dispersed bays (mixed) layouts — allow both adjacent and dispersedlayout of either single or dual-engine arrays with adjacent and dispersed bays.
Note
Single and dual-engine arrays cannot be mixed.
Position Bays
44 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Adjacent layouts, single-engine arrayOn single-engine arrays with adjacent layouts, bays are positioned side-by-side to theright of system bay 1 (front view) and secured with lower brackets.
The following figure shows adjacent layout of a single-engine array.
Figure 2 Adjacent layout, single-engine array
System
bay 1System
bay 2
System
bay 3System
bay 4
System
bay 5System
bay 6
System
bay 7
System
bay 8
Engine 1 Engine 2 Engine 3 Engine 4 Engine 5 Engine 6 Engine 7 Engine 8
R1 R2 R3 R4 R5 R6 R700
Bay position
2 31
Table 16 Adjacent layout diagram key
# Description
1 VMAX 100K
2 VMAX 200K
3 VMAX 400K
Position Bays
Adjacent layouts, single-engine array 45
Adjacent layouts, dual-engine arrayDual-engine systems with adjacent layouts position system bay 1 next to system bay 2,and system bay 3 next to system bay 4.
The following figure shows the adjacent layout of dual-engine arrays by model type.
Figure 3 Adjacent layout, dual-engine array
System
bay 1
System
bay 2
Engine 1
Engine 2 Engine 4
Engine 3
00 R1
System
bay 3
System
bay 4
Engine 5 Engine 7
Engine 8Engine 6
R2 R3
Bay position
23
1
Table 17 Adjacent layout diagram key
# Description
1 VMAX 100K
2 VMAX 200K
3 VMAX 400K
Position Bays
46 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Dispersed layouts, single-engine arrayThe following figure shows a single-engine array with eight system bays in a dispersedlayout.
Figure 4 Dispersed layout, single-engine array
System
bay 1
System
bay 3
System
bay 4
System
bay 5System
bay 6
System
bay 8
System
bay 2
System
bay 7
Engine 3Engine 4 Engine 5 Engine 6 Engine 7
Engine 2Engine 1
Engine 8
Position Bays
Dispersed layouts, single-engine array 47
Dispersed layout, dual-engine arrayThe following figure shows an example of a dual-engine dispersed layout.
Figure 5 Dispersed layout, dual-engine, front view
System
bay 1
Engine 7
Engine 2
Engine 1
Engine 8
Engine 5
Engine 6
Engine 3
Engine 4
System
Bay 2
System
Bay 1
System
Bay 3
System
Bay 4
Position Bays
48 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Adjacent and dispersed (mixed) layoutThe following figure shows a single-engine array with a mixed layout.
Figure 6 Adjacent and dispersed (mixed) layout, single-engine array
System
bay 1System
bay 2
System
bay 4
System
bay 3
Engine 3
Engine 1 Engine 2 Engine 4
Initialinstall
Upgrade
00 R1 R2
Bay position
Initialinstall
Position Bays
Adjacent and dispersed (mixed) layout 49
The following figure shows a dual-engine array with a mixed layout.
Figure 7 Adjacent and dispersed (mixed) layout, dual-engine array
System
bay 1
Engine 1
Initial
install
System
bay 2
Engine 3
Engine 2
Engine 4
System
bay 3
Engine 5
Engine 6
00 R1
Bay position
Position Bays
50 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Dimensions for array layouts
Placing arrays in the data center or computer room involves understandingdimensions, planning for cutouts, and ensuring clearance for power and host cables.
l On nonraised floors, cables are routed overhead. An overhead routing bracket isprovided to allow easier access of overhead cables into the bay
l On raised floors, cables are routed across the subfloor beneath the tiles.
l Ensure there is a service area of 42 in (106 cm) for the front and 30 in (76 cm) forthe rear of each system bay.
The following figure shows the layout dimensions:
Figure 8 Layout Dimensions, VMAX3 Family
Front
Rear
47 in.(119 cm)Includes
front and rear doors
.25 in. (.64 cm) gapbetween bays
24.02 in.(61.01 cm)
24 in.(61 cm)
Position Bays
Dimensions for array layouts 51
Tile placementYou must understand tile placement to ensure that the array is positioned properly andto allow sufficient room for service and cable management.
When placing the array, consider the following:
l Typical floor tiles are 24 in. (61 cm) by 24 in. (61 cm).
l Typical cutouts are:
n 8 in. (20.3 cm) by 6 in. (15.2 cm) maximum.
n 9 in. (22.9 cm) from the front and rear of the floor tile.
n Centered on the tiles, 9 in (22.9 cm) from the front and rear and 8 in (20.3)from sides.
l Maintain a .25 in. (.64 cm) gap between bays.
l Service area of 42 in (106 cm) for the front and 30 in (76 cm) for the rear on thesystem bays.
The following figure provides tile placement information for all VMAX3 arrays (withdoors).
Figure 9 Placement with floor tiles, VMAX3 Family
Rear
A A
System
bay
System
bay
A
System
bay
A
System
bay
A A A
System
bay
A
System
baySystem
baySystem
bay
Front
F
l
o
o
r
T
i
l
e
Position Bays
52 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Caster and leveler dimensionsThe bay(s) bottom includes four caster wheels. The front wheels are fixed; the tworear casters swivel in a 1.75-in. diameter. Swivel position of the caster wheelsdetermines the load-bearing points on your site floor, but does not affect the cabinetfootprint. Once you have positioned, leveled, and stabilized the bay(s), the fourleveling feet determine the final load-bearing points on your site floor.
The following figure shows caster and leveler dimensions.
Figure 10 Caster and leveler dimensions
Front
Rear
Front
Rear
18.830
20.700
31.740
*117.102 minimum 20.580 maximum
Top view
Rear view Rear view
Right side view
3.628
3.620
30.870 minimum
32.620 maximum
1.750
1.750
20.650
40.35
Bottom view
Leveling feet
*1*2
*3
3.620
*4*7
*5
*6
*8
*9
*10
Table 18 Caster and leveler dimensions diagram key
# Description
*1 Minimum (17.102) and maximum (20.58)distances based on the swivel position of thecaster wheel.
Position Bays
Caster and leveler dimensions 53
Table 18 Caster and leveler dimensions diagram key (continued)
# Description
*2 Right front corner detail. Dimension (3.628)to the center of caster wheel from surface.
*3 Diameter (1.750) of caster wheel swivel.
*4 Outer surface of rear door.
*5
*6 Diameter (1.75) of swivel (see detail *3).
*7 Bottom view of leveling feet.
*8 Maximum (32.620) distance based on swivelposition of the caster wheel.
*9 Minimum (30.870) distance based on swivelposition of the caster wheel.
*10 Distance (3.620) to the center of the casterwheel from the surface (see detail *2).
Position Bays
54 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 7
Power cabling, cords and connectors
This chapter includes:
l Power distribution unit ......................................................................................56l Wiring configurations.........................................................................................58l Power interface.................................................................................................. 61l Customer input power cabling............................................................................ 61l Best practices: Power configuration guidelines.................................................. 61l Power extension cords, connectors, and wiring................................................. 62
Power cabling, cords and connectors 55
Power distribution unitThe VMAX3 array is powered by two redundant power distribution units (PDUs), onePDU for each power zone.
Both PDUs are mechanically connected together, including mounting brackets, tocreate a single 2U structure, as shown in the following figures. The PDUs areintegrated to support AC-line input connectivity and provide outlets for everycomponent in the bay.
The PDU is available in three wiring configurations that include:
l Single-phase
l Three-phase Delta
l Three-phase Wye
Note
The PDU AC power cords (single-phase and three-phase) extend 74" (188cm) fromthe PDU chassis and are designed to reach to the bay floor egress for connection tothe customer power supply. 15' (4.57m) extension cables are provided.
Each PDU provides the following components:
l A total of 24 power outlets for field replaceable units (FRUs). The outlets aredivided into six banks with each bank consisting of four IEC 60320 C13 individualAC outlets.
l Each bank of outlets is connected to individual branch circuits that are protectedby a single two pole 20 Amp circuit breaker.
l Depending on which PDU option selected there is a different input connector foreach PDU.
If the customer requires power to be supplied from overhead, EMC recommendsreplacing the rear top cover of the bay with the ceiling routing top cover, described in Overhead routing kit on page 86, which allows the power cables inside the machineto be routed out through the top.
A second option is to "drop" the power cables down the hinge side, to the bottom, androute them inside the machine. The cables should be dressed to allow all doors to openfreely and space should be provisioned accordingly to accommodate an adjacentcabinet.
Figure 11 Power distribution unit (PDU) without installed wire bales, rear view
Power cabling, cords and connectors
56 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Figure 12 Power distribution unit (PDU) with installed wire bales, rear view
Power cabling, cords and connectors
Power distribution unit 57
Wiring configurations
NOTICE
These wiring configurations are used for the redundant PDU in the complete assembly(PDU A and PDU B). Each figure represents half of the independent PDU assembly.The same wiring configurations are used on each PDU.
Note
The PDU AC power cords (single-phase and three-phase) extend 74" (188cm) fromthe PDU chassis and are designed to reach to the bay floor egress for connection tothe customer power supply. 15' (4.57m) extension cables are provided.
Single-phase wiring configurationFigure 13 Single-phase, horizontal 2U PDU internal wiring
1 2 3
1514 16 18 19 2120
20A CB4
22
20A CB1
20A CB5 20A CB6
23
20A CB2 20A CB3
L1
L1
L1
L1 L1
L1
4 5 6 7 8 9 10 11
13
LN LN LN
L1
= 1
0A
WG
L2
= 1
0 A
WG
10 AWG
NL L N L N
P1
L2
L2 L2
L2
L2
L2
G
G =
10
AW
G
G
L1
= 1
0A
WG
L2
= 1
0 A
WG
G =
10
AW
G G
reen
L1
= 1
0A
WG
L2
= 1
0 A
WG
G =
10
AW
G G
reen
G
P2 P3
.
LN LN
17
NL L N L N
LN
12
24
P3P1 P2
Single-phase PDU connector, L6-30P x 6
Power cabling, cords and connectors
58 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Three-phase (Delta) wiring configurationFigure 14 Three-phase (Delta), horizontal 2U PDU internal wiring
20A CB4
20A CB1
20A CB5 20A CB6
L1L2
L3G
20A CB2 20A CB3
L1
L1
L1
L1L2
L2
L2
L2 L3
L3 L3
L3
L1(X
) =
8A
WG
Bla
ck
wir
e
L2
(Y
) =
8 A
WG
White
wir
e
L3
(Z
) =
8 A
WG
Re
d w
ire
G =
8 A
WG
Gre
en
8 AWG
P1
1413 15 17 18 2019 21 22
12
LN LN LNLN LN
16
LN
1 2 3 4 5 6 7 8 9 10 11
NL L NL N
NL L N L N
23 24
Hubbell CS-8365L or equivalent x 2
Power cabling, cords and connectors
Wiring configurations 59
Three-phase (Wye) wiring configurationFigure 15 Three-phase (Wye), horizontal 2U PDU internal wiring
P1
20ACB4
20ACB1
20ACB5
20ACB6
L1 L2 L3 N
20ACB2
20ACB3
L1
L1
L2
L2 L3
L3
L1
(X
) B
row
n
L2
(Y
) B
lack
L3
(Z
) G
ray
Gre
en/y
ello
w
10 AWG
G
N
N N
N
N
N
N B
lue
1413 15 17 18 2019 21 22
12
LN LN LNLN LN
16
LN
1 2 3 4 5 6 7 8 9 10 11
NL L N L NNL L N L N
23 24
ABL SURSUM S52S30A or equivalent x 2
Power cabling, cords and connectors
60 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Power interfaceData centers must conform to the corresponding specification for arrays installed inNorth American, International, and Australian sites.
Each bay in a system configuration contains a complete 2U PDU assembly. The PDUassembly is constructed with two electrically individual PDUs.
NOTICE
Customers are responsible for meeting all local electrical safety requirements.
Customer input power cablingBefore the array is delivered, the customer must supply and install the requiredreceptacles on the customer’s PDUs for zone A and zone B power for the system bay.
NOTICE
EMC recommends that the customer's electrician be present at installation time towork with the EMC Customer Engineer to verify power redundancy.
Refer to the EMC VMAX Best Practices Guide for AC Power Connections for requireditems at the customer site.
Best practices: Power configuration guidelinesThe following section provides best practice guidelines for evaluating and connectingpower, as well as for choosing a UPS component.
Uptime Institute best practicesFollow these best practice guidelines when connecting AC power to the array:
l The EMC customer engineer (CE) should discuss with the customer the need forvalidating AC power redundancy at each bay. If the power redundancyrequirements are not met in each EMC bay, a Data Unavailable (DU) event couldoccur.
l The customer should complete power provisioning with the data center prior toconnecting power to the array.
l The customer‘s electrician or facilities representative must verify that the ACvoltage is within specification at each of the power drops being fed to each EMCproduct bay.
l All of the power drops should be labeled to indicate the source of power (PDU)and the specific circuit breakers utilized within each PDU:
n Color code the power cables to help achieve redundancy.
n Clearly label the equipment served by each circuit breaker within the customerPDU.
l The electrician or facilities representative must verify that there are two powerdrops fed from separate redundant PDUs prior to turning on the array:
n If both power drops to a bay are connected to the same PDU incorrectly, a DUevent will result during normal data center maintenance when the PDU isswitched off. The label on the power cables depicts the correct connection.
Power cabling, cords and connectors
Power interface 61
l The electrician should pay particular attention to how each PDU receives powerfrom each UPS within the data center because it is possible to create a scenariowhere turning off a UPS for maintenance could cause both power feeds to a singlebay to be turned off, creating a DU event.
l The customer’s electrician should perform an AC verification test by turning offthe individual circuit breakers feeding each power zone within the bay, while theCustomer Engineer monitors the LED on the SPS modules to verify that powerredundancy has been achieved in each bay.
One PDU should never supply both power zone feeds to any one rack of equipment.
Power extension cords, connectors, and wiringThe following section illustrates a variety of extension cords that offer differentinterface connector options. The selected cords are used to interface between thecustomer’s power source and each PDU connection.
The amount of cords needed is determined by the number of bays in the array and thetype of input power source used (single-phase or three-phase).
Power cabling, cords and connectors
62 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Single-phaseThe following tables describe the extension cords and connector options for single-phase power transmission.
Table 19 Extension cords and connectors options – single-phase
Plug on eachEMC powercorda
EMC-supplied extensioncord/model numberb, c
EMCPowerCableP/N
EMC-suppliedextension cordreceptacle (P1)connecting toEMC plug
EMC-suppliedextension cordplug (P2)connecting tocustomer PDUreceptacle
Customer PDUreceptacle
NEMA L6-30
E-PW40U-US 038-003-438 (BLK15FT)
038-003-898 (GRY15FT)
038-003-479 (BLK21FT)
038-003-794 (GRY21FT)
NEMA L6-30R NEMA L6-30P NEMA L6-30R
E-PW40URUS 038-003-441 (BLK15FT)
038-003-901 (GRY15FT)
038-003-482 (BLK21FT)
038-003-797 (GRY21FT)
NEMA L6-30R Russellstoll 3750DP Russellstoll 9C33U0
E-PW40UIEC3
CAUTION
The single phase linevoltage must be below264VAC to use these cableassemblies.
038-003-440 (BLK15FT)
038-003-900 (GRY15FT)
038-003-481 (BLK21FT)
NEMA L6-30R IEC-309 332P6 IEC-309 332C6
Power cabling, cords and connectors
Single-phase 63
Table 19 Extension cords and connectors options – single-phase (continued)
Plug on eachEMC powercorda
EMC-supplied extensioncord/model numberb, c
EMCPowerCableP/N
EMC-suppliedextension cordreceptacle (P1)connecting toEMC plug
EMC-suppliedextension cordplug (P2)connecting tocustomer PDUreceptacle
Customer PDUreceptacle
038-003-796 (GRY21FT)
E-PW40UASTL 038-003-439 (BLK15FT)
038-003-899 (GRY15FT)
038-003-480 (BLK21FT)
038-003-795 (GRY21FT)
NEMA L6-30R CLIPSAL 56PA332 CLIPSAL56CSC332
E-PW40L730
CAUTION
The single phase linevoltage must be below264VAC to use these cableassemblies.
038-004-301 (BLK15FT)
038-004-302 (GRY15FT)
038-004-303 (BLK21FT)
038-004-304 (GRY21FT)
NEMA L6-30R NEMA L7-30P NEMA L7-30R
a. Six (6) plugs per system bayb. Two (2) cords per model, cord length of 15 feet / 4.57 meters.c. The EMC ordering system defaults to one of the extension cord models based on the country of installation. The default value
can be overridden in the EMC ordering system.
Customer-to-system wiring for bays (single-phase)
The following figures provide cable descriptions for customer-to-system wiring forsingle-phase power transmission.
Note
Each single-phase power cable L (Line), N (Neutral) or L (Line) signal connectiondepends on the country of use.
Power cabling, cords and connectors
64 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Figure 16 Single-phase: E-PW40U-US
P1 P2
L6-30R L6-30P
X Y
G
Power cord wiring diagram
Color From To Signal
BLK P1-X P2-X L
WHT P1-Y P2-Y N
GRN P1-G P2-G GND
XY
G
L6-30R L6-30P
X Y
G
Power cord wiring diagram
Color From To Signal
BLK P1-X P2-X L
WHT P1-Y P2-Y L
GRN P1-G P2-G GND
XY
G
L6-30R L6-30P
Power cabling, cords and connectors
Single-phase 65
Figure 17 Single-phase: E-PW40URUS
P1 P2
L6-30R 3750DP
X Y
G
Color From To Signal
BLK P1-X P2-L1 L
WHT P1-Y P2-L2 N
GRN P1-G P2-G GND
Power cord wiring diagram
L6-30R
L1 L2
G
3750DP
X Y
G
Color From To Signal
BLK P1-X P2-L1 L
WHT P1-Y P2-L2 L
GRN P1-G P2-G GND
Power cord wiring diagram
L6-30R
L1 L2
G
3750DP
Figure 18 Single-phase: E-PW40UIEC3
X Y
G
P1 P2
L6-30R 332P6W
G
Y X
Color From To Signal
BRN P1-X P2-X L
BLU P1-Y P2-Y N
GRN/YEL P1-G P2-G GND
X Y
G
Power cord wiring diagram
L6-30R 332P6W
X Y
G
Color From To Signal
BLK P1-X P2-X L
WHT P1-Y P2-Y L
GRN/YEL P1-G P2-G GND
Power cord wiring diagram
L6-30R 332P6W
G
Y X
G
Y X
Power cabling, cords and connectors
66 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Figure 19 Single-phase: E-PW40UASTL
P1 P2
L6-30R
CLIPSAL
56PA332
Color From To Signal
BRN P1-X P2-AP L
BLU P1-Y P2-N N
GRN/YEL P1-G P2-E GND
X Y
G
Power cord wiring diagram
L6-30R 56PA332
G
Y X
G
Y X
G
Y X
Color From To Signal
BRN P1-X P2-AP L
BLU P1-Y P2-N L
GRN/YEL P1-G P2-E GND
X Y
G
Power cord wiring diagram
L6-30R 56PA332
G
Y X
G
Y X
X Y
G
Figure 20 Single-phase: E-PW40L730
L6-30R L7-30P
P1 P2
Color Signal P1 P2
BLK L X Brass
WHT N Y W (Silver)
GRN/YEL GND GND GND
X Y
G
Power cord wiring diagram
L6-30R L7-30P
Color Signal P1 P2
BLK L X Brass
WHT L Y W (Silver)
GRN/YEL GND GND GND
X Y
G
Power cord wiring diagram
L6-30R L7-30P
Power cabling, cords and connectors
Single-phase 67
Three-phase (International (Wye))The following table describes the extension cords and connector for three-phaseinternational (Wye) power transmission.
Table 20 Extension cords and connectors options – three-phase international (Wye)
Plug on eachEMC powercorda
EMC suppliedextension cordEMC modelnumberb
EMC Power CableP/N
EMC suppliedextension cordreceptacle (P1)connecting toEMC plug
EMC suppliedextension cordplug (P2)connecting tocustomer PDUreceptacle
Customer PDUreceptacle
ABL Sursum -S52S30A orHubbell -C530P6S
E-PC3YAFLEc 038-004-572 (BLK15FT)
038-004-573 (GRY15FT)
ABL Sursum -K52S30A orHubbell -C530C6S
Flying Leads
(International)
Determined bycustomer
E-PCBL3YAG 038-004-574 (BLK15FT)
038-004-575 (GRY15FT)
ABL Sursum -K52S30A orHubbell -C530C6S
ABL Sursum -S52S30A orHubbell -C530P6S
ABL Sursum -K52S30A orHubbell -C530C6S
a. Two (2) plugs per bay.Up to four (4) plugs if a third party or second system is in the rack.
b. Two (2) cords per model, cord length of 15 feet / 4.57 meters.c. The EMC ordering system defaults to one of the extension cord models based on the country of installation. The default value
can be overridden in the EMC ordering system.
Power cabling, cords and connectors
68 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Customer-to-system wiring (three-phase, International)
The following figures provide cable descriptions for customer-to-system wiring forthree-phase international power transmission.
Figure 21 Flying leads, three-phase, international: E-PC3YAFLE,
P1
Shrink tubing
ABL Sursum - K52S30A or
Hubbell - C530C6S
Wire
Color From
Hubbell
Connector
ABL –
Sursum
Connector
TO
BRN P1 R1 L1 X-(L1)
BLK P1 S2 L2 Y-(L2)
GRY P1 T3 L3 Z-(L3)
BLU P1 N N W-(N)
GRN/YEL P1 G PE GND
Power cabling, cords and connectors
Three-phase (International (Wye)) 69
Figure 22 Three-phase, international: E-PCBL3YAG
P1
ABL Sursum - K52S30A or
Hubbell - C530C6S
P2
ABL Sursum - S52S30A or
Hubbell - C530P6S
Wire Color From Hubbell ABL-Surum To Hubbell ABL-Surum
BRN P1 R1 L1 P2 R1 L1
BLK P1 S2 L2 P2 S2 L2
GRY P1 T3 L3 P2 T3 L3
BLU P1 N N P2 N N
GRN/YEL P1 G PE P2 G PE
Power cabling, cords and connectors
70 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Three-phase (North American (Delta))The following table describes the extension cords and connector for three-phaseNorth American (Delta) power transmission.
Table 21 Extension cords and connectors options – three-phase North American (Delta)
Plug on eachEMC powercorda
EMC suppliedextension cordEMC modelnumberb
EMC Power CableP/N
EMC supplied
extension cordreceptacle (P1)connecting toEMC plug
EMC suppliedextension cordplug (P2)connecting tocustomer PDUreceptacle
Customer PDUreceptacle
HubbellCS-8365C
E-PCBL3DHRc 038-003-272 (BLK15FT)
038-003-789 (GRY15FT)
HubbellCS-8364C
Russellstoll9P54U2
Russellstoll9C54U2d
E-PCBL3DHH 038-003-271 (BLK 15FT)
038-003-788 (GRY15FT)
HubbellCS-8364C
HubbellCS-8365C
HubbellCS-8364C
a. Two (2) plugs per bay.b. Two (2) cords per model, cord length of 15 feet / 4.57 meters.c. The EMC ordering system defaults to one of the extension cord models based on the country of installation. The default value
can be overridden in the EMC ordering system.d. EMC supplied as EMC model number E-ACON3P-50.
Power cabling, cords and connectors
Three-phase (North American (Delta)) 71
Customer-to-system wiring (three-phase, North American (Delta))
The following figures provide cable descriptions for three-phase North American(Delta) power transmission.
Figure 23 Three-phase, North American, Delta: E-PCBL3DHR
P1 P2
CS8364 Russellstoll 9P54U2
CS8364 9P54U2Color
BLK
WHT
RED
GRN
From
P1-X
P1-Y
P1-Z
P1-G
To
P2-X
P2-Y
P2-Z
P2-G
Signal
L1
L2
L3
GND
X
YZX
Y
Z
Power cord wiring diagram
Figure 24 Three-phase, North American, Delta: E-PCBL3DHH
P1 P2
CS8364 CS8365
CS8364 CS8365Color
BLK
WHT
RED
GRN
From
P1-X
P1-Y
P1-Z
P1-G
To
P2-X
P2-Y
P2-Z
P2-G
Signal
L1
L2
L3
GND
Y
Z
ZX
X
Y
Power cabling, cords and connectors
72 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Three-phase (Wye, Domestic)The following table describes the extension cords and connector for three-phase Wyedomestic power transmission.
Table 22 Extension cords and connectors options – three-phase Wye, domestic
Plug on back ofEMC systema
EMC suppliedextension cordEMC modelnumberb
EMC PowerCable P/N
EMC suppliedextension cordreceptacle (P1)connecting toEMC plug
EMC suppliedextension cordplug (P2)connecting tocustomer PDUreceptacle
Customer PDUreceptacle
ABL SursumS52.30
E-PCBL3YL23P c,d 038-004-305(BLK 15FT)
038-004-306(GRY 15FT)
Hubbell C530C6S NEMA L22-30P NEMA L22-30R
a. Two (2) plugs per bay.b. Two (2) cords per model, cord length of 15 feet / 4.57 meters.c. The EMC ordering system defaults to one of the extension cord models based on the country of installation. The default value
can be overridden in the EMC ordering system.d. The line to neutral voltage must be below 264VAC to use these cable assemblies.
Power cabling, cords and connectors
Three-phase (Wye, Domestic) 73
Customer-to-system wiring (three-phase, Wye, Domestic)
The following figure provides cable descriptions for models with three-phase Wyedomestic power transmission.
Figure 25 Three-phase, domestic (Black and Gray): E-PCBL3YL23P
HubbellC530C6S
NEMA
P1 P2
L22-30P
Color From (P1) To (P2) Signal
BLK1 P1-R1 P2-X L1 BLK2 P1-S2 P2-Y L2BLK3 P1-T3 P2-Z L3 BLK4 P1-N P2-N NGRN/YLW P1-G P2-G GND
C530C6SL22-30P
Black, 15 ft
Gray, 15 ft
P1 P2
Color From (P1) To (P2) Signal
BRN P1-R1 P2-X L1 BLK P1-S2 P2-Y L2GRAY P1-T3 P2-Z L3 BLUE P1-N P2-N NGRN/YLW GND GND GND
C530C6SL22-30P
Power cabling, cords and connectors
74 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 8
Third Party Racking Option
This chapter includes:
l Computer room requirements ........................................................................... 76l Customer rack requirements ............................................................................. 77l Third party racks with vertical PDUs — RPQ Required .....................................79l Chassis to chassis grounding..............................................................................83
Third Party Racking Option 75
Computer room requirements
The following computer room requirements provide service access and minimizephysical disruption:
l To ensure integrity of cables and connections, do not move racks that are secured(bolted) together after installation.
l A minimum of 42 inches (107 cm) front and 30 inches (76 cm) rear clearance isrequired to provide adequate airflow and to allow for system service.
Third Party Racking Option
76 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Customer rack requirementsThe array components are shipped in a fully tested EMC rack and are installed into thecustomer-supplied rack by EMC customer support engineers only. The originalshipping rack, when empty, is returned to EMC after the installation is complete.
To ensure successful installation and secure component placement, customer racksmust conform to the following requirements:
l National Electrical Manufacturers Association (NEMA) standard for 19-inchcabinets.
l Individual racks must be empty at the time of installation.
l Threaded hole racks are not supported.
l The cabinet must be in its final location with stabilizing (anti-tip) bracketsinstalled.
l A separate rack that supports a minimum 2000 lb/907 kg of weight must beprovided for each system bay.
Note
The customer must ensure floor load bearing requirements are met.
l Components and cables installed in customer racks must conform to theseconfiguration rules:
n Components and cables within a system bay can not be moved to availablespace in different bay, or to a different location within the same bay.
n System must be properly positioned in accordance with physical placementrules.
l Internal depth of at least 43 inches (109 cm) with the front and rear doors closed.This measurement is from the front surface of the NEMA rail to the rear door.
l Round or square channel openings must support M5 screws that secure EMC railsand components. Clip nuts are provided by EMC as required.
l Non-dispersed rack-to-rack pass-through cable access at least 3 inches (7.6 cm)in diameter must be available via side panels or horizontal through openings.
l To ensure proper clearance and air flow to the array components, customersupplied front doors and standard bezels, if used, must include a minimum of 2.5inch (6.3 cm) clearance between the back surface of the door to the front surfaceof the vertical NEMA rails.Front and rear doors must also provide:
n A minimum of 60% (evenly distributed) air perforation openings.
n Appropriate access for service personnel, with no items that prevent front orrear access to EMC components.
n Exterior visibility of system LEDs.
Third Party Racking Option
Customer rack requirements 77
Figure 26 Customer rack dimension requirements
Rack
Post
Rea
r
(19” (48.26 cm) min
Rack
Post
Rack
Post
Rack
Post
Rear NEMA Front NEMA
Front NEMA Rear NEMA
(24
” (6
0.9
6 c
m)
min
)
19
” N
EM
A
Fro
nt
—Fro
nt
Door—
a b c
(24” (60.96 cm) min)
2.5” (6.35 cm) (min)
(48
.26
cm
)—Rear D
oor—
Min depth
(43” (109.2 cm) min)
d
e
Rack, Top View
Rack depth = a+b+c
Dim Label Description
a = distance between front surface of rack post and NEMA rail.
b = distance between NEMA rails.(24" (60.96 cm) recommended, up to 34" (86.36 cm) allowed.)
c = distance between rear NEMA rails to interior surface of rear door.Minimum requirement = 19" (48.26 cm).
d If a front door exists, = distance between inner-front surface of the front door and the front NEMArail.
e = distance between rear surface of rack post to inner surface of rear door.
Third Party Racking Option
78 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Third party racks with vertical PDUs — RPQ RequiredEach system bay is powered by two redundant power distribution units (PDUs), onePDU for each power zone. Rather than use the standard EMC horizontal PDU, thecustomer can use vertical PDUs via RPQ. The general requirements for third partyracks with rear-facing or inward-facing PDUs are listed below.
l Requirements for third party racks with vertical PDUs (inward-facing) on page82
l Requirements for third party racks with vertical PDUs (rear-facing) on page 80
General requirements for vertical PDUs within third party racksIn addition to meeting standard VMAX array power requirements, vertical PDUs shouldabide by the following:
l Both PDUs support AC-line input connectivity and provide outlets for everycomponent in the bay.
l The PDU must be available in the wiring configuration that matches the customerpower supply.Options include:
n Single-phase
n Three-phase Delta
n Three-phase Wye
l Each PDU should meet the following requirements:
n At a minimum, a total of 24 power outlets must be provided.The outlets are divided into six banks with each bank consisting of four IEC60320 C13 individual AC outlets.
n Each bank of outlets is connected to individual branch circuits that areprotected by a single two pole 20 Amp circuit breaker.
n The PDU capacity should exceed the power requirements shown in the PowerCalculator for the specific max configuration.
n Single PDU mounted per side per Figure 27 on page 80 and Figure 28 on page82.
If the customer requires power to be supplied from overhead, EMC recommends oneof the following:
l Option 1: Replace the rear top cover of the bay with the ceiling routing top cover,described in Overhead routing kit on page 86, which allows the power cablesinside the machine to be routed out through the top.
l Option 2: "Drop" the power cables down the hinge side, to the bottom, and routethem inside the machine.
The cables should be dressed to allow all doors to open freely, minimize cablecongestion, and provide access to components within the system.
Third Party Racking Option
Third party racks with vertical PDUs — RPQ Required 79
Requirements for third party racks with vertical PDUs (rear-facing)If using a rear-facing PDU within a third party rack, refer to the diagram below toensure that the rack and PDU combination are sufficient for the array.
Figure 27 Requirements for customer rack with rear-facing, vertical PDUs
Customer Rack with rear-facing non-EMC PDU, Top View
Rack
PostRear NEMAFront NEMA
Front NEMA Rear NEMA
Fro
nt
—Fro
nt
Door—
Rack
Post
Rack
Post
Rack
Postpw
pw Customer PDU
Customer PDU
Space required by enclosures
engine rails, and cable
management arms
j
—Rear D
oor—
e
a b c(24” (60.96 cm) min)
Min depth (k)
(43” (109.2 cm) min)
Re
ar
19
” N
EM
A(4
8.2
6 c
m)
d
2.5” (6.35 cm) (min)
fg
f
g
h i
Rack depth = a+b+c
Dim Label Description
a = distance between front surface of rack post and NEMA rail.
b = distance between NEMA rails.(24" (60.96 cm) recommended, up to 34" (86.36 cm) allowed.)
c = distance between rear NEMA rails to exterior, rear surface of rack.
d If a front door exists, = distance between inner-front surface of the front door and the front NEMArail.
e = distance between rear surface of rack post to inner surface of rear door.
f = distance between inside surface of rack post and 19" (48.26cm) space required by rails,enclosures, and cable management arms. Minimum of 3" (7.62cm) is recommended.
Note: If no rack post, minimum recommended distance is measured to inside surface of rack.
g = width of rack post.
h = 19" (48.26 cm) + (2f)Min requirement = 25" (63.5 cm)
i = rack width (minimum)19" (48.26 cm) + (2f) + (2g)
Where:
Third Party Racking Option
80 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Dim Label Description
l f = recommended minimum of 3" (7.62cm)
l g = rear rack post width (if any)
l pw + ½" (1.3cm) ≤ f+g
j ≥ 6" (15.24cm) is a requirement.Distance between rear-facing surface of vertical PDU and the rack post or any other parallel surfacethat may interfere with the power cables.
Note: Dimension k is dependent on this value.
k = min depth: b+cWhere:
l j ≥ 6" (15.24cm) is a requirement.
l IF j is ≥ 6" (15.24cm), min rack depth = 43" (109.2cm).
l IF j is < 6" (15.24cm), min rack depth = 43" (109.2cm) + distance required to make j ≥ 6"(15.24cm).
pw = PDU width
Third Party Racking Option
Requirements for third party racks with vertical PDUs (rear-facing) 81
Requirements for third party racks with vertical PDUs (inward-facing)If using a inward-facing PDU within a third party rack, refer to the diagram below toensure that the rack and PDU combination are sufficient for the array.
Figure 28 Requirements for third party rack with inward-facing, vertical PDUs
Rack with inward-facing non-EMC PDU, Top View
Rack
Post
Rear NEMA Front NEMA
Front NEMA Rear NEMA
Fro
nt
—Fro
nt
Door—
Rack
Post
Rack
Post
Rack
Post
Space required by enclosures
engine rails, and cable
management arms
PDU
pw
pd
a b(24” (60.96 cm) min)
d
2.5” (6.35 cm) (min)
(f)
19
” (4
8.2
6 c
m)+
(2
g)
min
e
—Rear D
oor—
Re
ar
19
” N
EM
A(4
8.2
6 c
m)
cbg
PDU
c
(h) 43” (109.2 cm) min
Min depth
Rack depth = a+b+c
Dim Label Description
a = distance between front surface of rack post and NEMA rail.
b = distance between NEMA rails.(24" (60.96 cm) recommended, up to 34" (86.36 cm) allowed.)
c = distance between rear NEMA to exterior, rear surface of rack.
cb (Cable Bend) = 4" minimum (10.156 cm)
d If a front door exists, = distance between inner-front surface of the front door and the front NEMArail.
e = distance between rear surface of rack post to inner surface of rear door.
f = rack width: 19" (48.26cm) + (2g)(Min requirement for inward-facing vertical PDU)
g ≥ pd (PDU Depth) + cb (Cable Bend)
Third Party Racking Option
82 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Dim Label Description
Note: PDU and connected cords cannot interfere with serviceability of system. This includesmaintenance of cable management arms.
h min depth: = b+c (43" (109.2cm) minimum)This is minimum space required for enclosures, engine rails, and cable management arms.
pd = PDU depth
pw = PDU width
Chassis to chassis groundingRack to rack chassis ground connections are strongly recommended to mitigate therisk of large AC power transients in the data center affecting system performance.Large AC power transients can occur from one or a combination of: electrical powergrid problems feeding a facility; weak facility grounding; powerful lightning stormstrikes; or facility power equipment failure. Mechanisms for tying racks together toprovide the ground connection can vary based on the rack provided by the customerand site facility preference.
P/N 106-562-209 is a rack to rack grounding kit for EMC racks. The grounding kitmay or may not work on racks provided by the customer due to the variety of groundlocation positions on racks.
Third Party Racking Option
Chassis to chassis grounding 83
Third Party Racking Option
84 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
CHAPTER 9
Optional kits
This chapter includes:
l Overhead routing kit.......................................................................................... 86l Dispersion kits....................................................................................................86l Securing kits...................................................................................................... 87l GridRunner kit and customer-supplied cable trough...........................................87
Optional kits 85
Overhead routing kitWhen installing an array in nonraised or raised floor environments, the host cablingand power is handled from overhead using the overhead cable routing kit.
Table 23 Overhead routing models
Model Description
E-TOP-KIT Top routing kit
Dispersion kitsEach dispersed system bay requires a dispersion kit specific to the bay number. Thedispersion kits include a 82 foot (25 m) optical cable and optics for the dispersedengine. When installing a dispersed layout, side skins (E-SKINS) are required.
The following table lists model numbers for new installations and upgrades.
Table 24 Dispersion kit model numbers
Model Description
E-DSOPTICE2 VMAX VG SYS BAY 2 DSP CBLOPTICS KIT
E-DSOPTICE2U VMAX VG SYS BAY 2 DSP CBLOPTICS KITUPG
E-DSOPTICE3 VMAX VG SYS BAY 3 DSP CBLOPTICS KIT
E-DSOPTICE3U VMAX VG SYS BAY 3 DSP CBLOPTICS KITUPG
E-DSOPTICE4 VMAX VG SYS BAY 3 DSP CBLOPTICS KITUPG
E-DSOPTICE4U VMAX VG SYS BAY 4 DSP CBLOPTICS KITUPG
E-DSOPTICE5 VMAX VG SYS BAY 5 DSP CBLOPTICS KIT
E-DSOPTICE5U VMAX VG SYS BAY 5 DSP CBLOPTICS KITUPG
E-DSOPTICE6 VMAX VG SYS BAY 6 DSP CBLOPTICS KIT
E-DSOPTICE6U VMAX VG SYS BAY 6 DSP CBLOPTICS KITUPG
E-DSOPTICE7 VMAX VG SYS BAY 7 DSP CBLOPTICS KIT
E-DSOPTICE7U VMAX VG SYS BAY 7 DSP CBLOPTICS KITUPG
E-DSOPTICE8 VMAX VG SYS BAY 8 DSP CBLOPTICS KIT
E-DSOPTICE8U VMAX VG SYS BAY 8 DSP CBLOPTICS KITUPG
Optional kits
86 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Securing kitsThe Securing Kits contain heavy brackets plus hardware used to attach the bracketsto the frames of the system bays. The brackets are attached to the floor using boltsthat engage the flooring substructure provided by the customer.
The EMC VMAX Securing Kit Installation Guide provides installation instructions.
Table 25 Securing kit models
Model Description
E-SECURE Secure kit for single bay
E-SECUREADD Secure kit for joining bays
GridRunner kit and customer-supplied cable trough
The EMC GridRunner™ bottom routing kit (E-BOT-KIT) and customer-supplied cabletroughs can help organize and protect subfloor cables that connect separated bays.GridRunners reduce the vertical drop of the dispersion cables, which may increase thedistance between the separated bays.
Each GridRunner supports the cable bundle above the subfloor. GridRunners areinstalled with brackets that attach to the stanchions under the raised floor. Thestanchions are up to one inch in diameter, measured at six inches (15.24 cm) belowthe raised tiles.
To ensure sufficient support of the cable bundle, a GridRunner should be installedevery two meters.
Table 26 Bottom routing model
Model Description
E-BOT-KIT a Bottom routing kit
a. GridRunner basket for supporting cables beneath the floor for dispersed bays.
Optional kits
Securing kits 87
Optional kits
88 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
APPENDIX A
Best Practices for AC Power Connections
This chapter includes:
l Best practices overview for AC power connections........................................... 90l Selecting the proper AC power connection procedure........................................91l Procedure A: Working with the customer's electrician onsite............................ 92l Procedure B: Verify and connect....................................................................... 99l Procedure C: Obtain customer verification.......................................................100l PDU labels........................................................................................................ 100l Ground the cabinet............................................................................................101l AC power specifications................................................................................... 103
Best Practices for AC Power Connections 89
Best practices overview for AC power connectionsTo assure fault tolerant power, external AC power must be supplied from independent,customer-supplied, power distribution units (PDUs) as shown in Figure 29 on page90.
NOTICE
For systems operating from three phase AC power, two independent and isolated ACpower sources are recommended for the two individual power zones in each rack ofthe system. This provides for the highest level of redundancy and system availability.If independent AC power is not available, there is a higher risk of data unavailabilityshould a power failure occur, including individual phase loss occurring in both powerzones.
NOTICE
Before connecting external AC power to EMC bays, verify that the bays have beenplaced in their final position as explained in the installation guide.
Figure 29 Two independent customer-supplied PDUs
Customer’sPDU 1
Customer’sPDU 2
Circuit breakerson (|)
Circuit breakerson (|)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
Power feed 1 Power feed 2
Best Practices for AC Power Connections
90 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Selecting the proper AC power connection procedureThe EMC Customer Engineer must select the proper AC power connection procedure
There are three possible scenarios at the installation site regarding the connection ofcustomer AC power to the EMC array. The EMC Customer Engineer (CE) must selectthe proper AC power connection procedure for the scenario.
1. Refer to table below which summarizes the three possible scenarios at theinstallation site when you are about to connect external AC power to the EMCarray.
2. Select the procedure that applies to your situation and follow the instructions forthat procedure.
Table 27 Procedure options for AC power connection
If the scenario is... then use this procedure:
The customer’s electrician is available at the installation site. Aa, See: Procedure A: Working with the customer's electricianonsite on page 92
Access to customer-supplied, labeled, power cables (beneathraised floor or overhead).
(And the customer’s electrician is NOT available at theinstallation site.)
B, See: Procedure B: Verify and connect on page 99
Customer-supplied PDU source cables are already pluggedinto the EMC PDU and you have no access to the customer-supplied, labeled, power cables (beneath raised floor oroverhead).(And the customer’s electrician is NOT available at theinstallation site.)
C, See: Procedure C: Obtain customer verification on page100
a. Procedure A assures fault tolerant power in the EMC array.
Best Practices for AC Power Connections
Selecting the proper AC power connection procedure 91
Procedure A: Working with the customer's electrician onsiteUse this procedure if the customer’s electrician is available at the installation site.
This procedure requires three basic tasks that alternate between the customer'selectrician, the EMC CE and back to the customer's electrician.
l Task 1: Customer's electrician
l Task 2: EMC Customer Engineer (CE)
l Task 3: Customer's electrician
Best Practices for AC Power Connections
92 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Procedure A, Task 1: Customer's electrician
NOTICE
This task is performed by the customer's electrician.
Procedure
1. Verify that the customer-supplied AC source voltage output on each customer-supplied PDU is within the AC power specification shown in AC powerspecifications on page 103. Measure the voltage output of each power cable asshown in Figure 30 on page 93.
2. Turn OFF all the relevant circuit breakers in customer-supplied PDU 1 andcustomer-supplied PDU 2.
3. Verify that the customer-supplied power cables connected to PDU 1 and PDU 2have no power as shown in Figure 31 on page 93.
Figure 30 Circuit breakers ON — AC power within specification
Customer’sPDU 1
Customer’sPDU 2
Circuit breakerson (|)
Circuit breakerson (|)
Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
Labels on customer power lines
Power feed 1 Power feed 2
PDU 1CB 28
PDU 2
CB 9
Voltmeter
TYPE PM89 CLASS 25 01
0
100 240300V
Voltmeter
TYPE PM89 CLASS 25 01
0
100 240300V
Figure 31 Circuit breakers OFF — No AC power
Customer’sPDU 1
Customer’sPDU 2
Circuit breakeroff (0)
Circuit breakeroff (0)Circuit breakers - Numbers
27
28
29
30
Circuit breakers - Numbers
...
8
9
10
11
...
PDU 2
CB 9
PDU 1CB 28
Labels on customer power lines
Voltmeter
TYPE PM89 CLASS 25 01
0
100 240300V
Voltmeter
TYPE PM89 CLASS 25 01
0
100 240300V
Best Practices for AC Power Connections
Procedure A, Task 1: Customer's electrician 93
Procedure A, Task 2: EMC Customer EngineerBefore you begin
Before connecting power to the system, make sure that the power for both zone Aand zone B are turned OFF. This task is performed by the EMC Customer Engineer.
Figure 32 System bay power tee breakers (OFF = pulled out)
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PDU PDU
System Bay (rear view)
Zo
ne
B
Zo
ne
A
12
34
56
12
34
56
Power zone B
Left side
Power zone A
Right side1
23
45
6
12
34
56
Zone A
Right side
Zone B
Left side
Power zone B
Left side
Power zone A
Right side
(With
re
ar
do
or
rem
ove
d)
(With
re
ar
do
or
)
ON OFF
12
34
56
12
34
56
Procedure
1. Confirm that the customer-supplied power cables are labeled and that eachlabel contains the relevant customer-supplied PDU and circuit breaker numbers.If power cables are not equipped with labels, alert the customer.
2. Compare the numbers on the customer-supplied power cables for each EMCbay to verify that power zone A and power zone B are powered by a differentcustomer-supplied PDU.
3. Do one of the following to connect power zone A and power zone B in each bay.If necessary, use the 15ft extension cords provided by EMC.
l For single-phase power: Connect customer-supplied PDU power cables tothe EMC bay by connecting to the bay's AC input cables for power zone Aand power zone B as shown below.
Best Practices for AC Power Connections
94 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Figure 33 Connecting AC power, single-phase
Customer’s PDU 1
Zone B
AC input
cable B
15 ft. extension
cord options
Mating connector or
customer-supplied cable
Customer’s PDU 2
Zone A
AC input
cable A
15 ft. extension
cord options
Mating connector or
customer-supplied cable
EMC-supplied power cable
and connector from the PDUCable connectors are shown
as they exit the bottom rear
of the bay.
Rear viewSystem bay
Zone B PDU
(Left)Zone A PDU
(Right)
EMC-supplied power cable
and connector from the PDU
P1 P2 P3 P1 P2 P3P2 and P3 used
depending on
configuration
l For three-phase power: Connect customer-supplied PDU power cables tothe EMC bay by connecting to the bay's AC input cables for power zone Aand power zone B as shown below.
Best Practices for AC Power Connections
Procedure A, Task 2: EMC Customer Engineer 95
Figure 34 Connecting AC power, three-phase
Customer’s PDU 1
Zone B
AC input
cable B
15 ft. extension
cord options
Mating connector or
customer-supplied cable
Customer’s PDU 2
Zone A
AC input
cable A
15 ft. extension
cord options
Mating connector or
customer-supplied cable
EMC-supplied power cable
and connector from the PDU
Rear viewSystem bay
Zone B PDU
(Left)
Zone A PDU
(Right)
EMC-supplied power cable
and connector from the PDU
Zone B PDU
(Left)Zone A PDU
(Right)
Cable connectors are shown
as they exit the bottom rear
of the bay.
NOTICE
Do not connect EMC bay power zone A and power zone B to the samecustomer-supplied PDU. The customer will lose power redundancy and risk DataUnavailability (DU) if the PDU fails or is turned off during a maintenanceprocedure.
Best Practices for AC Power Connections
96 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Figure 35 Power zone connections
:tnatropmIlaunam noitcurtsni ot refeR
Zone B Zone A
(Rear View)SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Zone B Zone A
(Rear View)SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Customer’s Power
Source 2
Circuit
Breakers
(CBs)
:tnatropmIlaunam noitcurtsni ot refeR
Zone B Zone A
(Rear View)SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Zone B Zone A
(Rear View)SYSTEM
Customer’s Power
Source 1
Circuit
Breakers
(CBs)
Customer’s Power
Source 2
Circuit
Breakers
(CBs)
046-001-749_01
Best Practices for AC Power Connections
Procedure A, Task 2: EMC Customer Engineer 97
Procedure A, Task 3: Customer's electrician
NOTICE
This task is performed by the customer's electrician.
Procedure
1. Working with the EMC Customer Engineer, turn ON all the relevant circuitbreakers in customer-supplied PDU 2.
Verify that only power supply and/or SPS LEDs in power zone A are ON orflashing green in every bay in the array.
Note
If all power supply and/or SPS LEDs in a bay are ON or flashing green, the bayis incorrectly wired because the AC power to both EMC power zones is suppliedby a single PDU, that is, customer-supplied PDU 2. Wiring must be correctedbefore moving on to the next step.
2. Turn OFF the relevant circuit breakers in customer-supplied PDU 2.
Verify that the power supply and/or SPS LEDs that turned green in theprevious step changed from green to OFF and/or flashing yellow. The yellowSPS lights flash for a maximum of 5 minutes.
Note
Note that power supplies connected to an SPS continue to have green lightsON while the SPS yellow light continues to flash indicating the SPS is providingon-battery power.
3. Repeat step 1 and step 2 for power zone B and customer-supplied PDU 1.
4. Turn ON all the relevant circuit breakers in customer-supplied PDU 1 andcustomer-supplied PDU 2.
5. Label the PDUs as described in PDU labels on page 100.
Best Practices for AC Power Connections
98 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS
Procedure B: Verify and connectPerform this procedure if the two conditions listed below are true:
l Access to customer-supplied, labeled, power cables (beneath raised floor oroverhead).
l The customer's electrician is not available at the installation site.
This procedure requires the EMC Customer Engineer to verify that the customer'selectrician has complied with power specifications. Once verified, the EMC CustomerEngineer makes the required power connections overhead or under the floor.
Procedure
1. Have the customer verify that their electrician has complied with powerspecifications for voltage levels and redundancy. If the customer cannot verifythis, provide them with a copy of Procedure A. Inform the customer that theirarray may prematurely shut down in the event of a site power issue.
2. Access the labeled, power cables (beneath raised floor or overhead) to verifythat the customer-supplied power cables are properly labeled as shown in Figure 31 on page 93 and described in Procedure A, Task 2.
3. Compare the numbers on the customer-supplied power cables for each EMCbay to verify that power zone A and power zone B are powered by a differentcustomer-supplied PDU.
4. If power extension cables are required, connect them to power zone A andpower zone B in each bay.
5. Connect the customer-supplied power cables to EMC power zones as describedin Procedure A, Task 2.
6. Record the customer-supplied PDU information as described in Procedure A,Task 2.
7. Label the PDUs as described in PDU labels on page 100.
Best Practices for AC Power Connections
Procedure B: Verify and connect 99
Procedure C: Obtain customer verificationPerform this procedure if the three conditions listed below are true:
l The customer-supplied PDU source cables are already plugged into the EMC PDU.
l You have no access to the area below the raised floor.
l The customer's electrician is not available at the installation site.
Procedure
1. Have the customer verify that their electrician has complied with powerspecifications for voltage levels and redundancy. If the customer cannot verifythis, provide them with a copy of Procedure A. Inform the customer that theirarray may prematurely shut down in the event of a site power issue.
2. Record the customer-supplied PDU information (AC source voltage) asdescribed in step 1 of Procedure A, Task 1: Customer's electrician on page 93and label the PDUs as described in PDU labels on page 100.
PDU labelsBefore applying labels to the PDUs, one of the following procedures must have beencompleted:
l Procedure A: Working with the customer's electrician onsite on page 92
l Procedure B: Verify and connect on page 99
l Procedure C: Obtain customer verification on page 100
If necessary, see Selecting the proper AC power connection procedure on page 91 toselect the correct procedure.
PDU label part numbers
VMAX3 Family
Table 28 VMAX3 Family label part numbers, EMC racks
For... Use PN Description Location
All bays PN 046-001-750 LABEL: CUSTOMER 1P 3P PDU INFOWRITEABLE
OPEN ME FIRST, KIT, PN 106-887-026
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Applying PDU labels, VMAX3 FamilyProcedure
1. For each bay, locate and complete the PDU label.
Note
For three-phase power, enter data only in the P1 column.
2. Place the label on the top surface of the PDU enclosure for side A and B.
Figure 36 PDU label , single-phase and three-phase
Customer PDU Information
Power Zone B
PDU
Panel
CB(s)
P1 P2 P3
Power Zone A
PDU
Panel
CB(s)
P1 P2 P3
Figure 37 Label placement— Customer PDU Information
Rear View
Zone A PDU labelZone B PDU label
Ground the cabinetEquipment correctly installed within the cabinet is grounded through the AC powercables and connectors. In general, supplemental grounding is not required.
If your site requires external grounding (for example, to a common grounding networkbeneath the site floor), you can use the grounding lugs provided on each of thecabinet’s bottom supports.
Best Practices for AC Power Connections
Applying PDU labels, VMAX3 Family 101
CL4827
046-003-3
50
Best Practices for AC Power Connections
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AC power specifications
Table 29 Input power requirements - single-phase, North American, International, Australian
Specification North American 3-wireconnection(2 L & 1 G)a
International andAustralian 3-wireconnection(1 L & 1 N & 1 G)a
Input nominal voltage 200–240 VAC ± 10% L- Lnom
220–240 VAC ± 10% L- Nnom
Frequency 50–60 Hz 50–60 Hz
Circuit breakers 30 A 32 A
Power zones Two Two
Minimum power requirementsat customer site
l Three 30 A, single-phase drops per zone.
l Two power zones require 6 drops, each drop rated for 30A.
l PDU A and PDU B require three separate single-phase 30A drops for each PDU.
a. L = line or phase, N = neutral, G = ground
Best Practices for AC Power Connections
AC power specifications 103
Table 30 Input power requirements - three-phase, North American, International, Australian
Specification North American 4-wireconnection(3 L & 1 G)a
International 5-wireconnection(3 L & 1 N & 1 G)a
Input voltageb 200–240 VAC ± 10% L- Lnom
220–240 VAC ± 10% L- Nnom
Frequency 50–60 Hz 50–60 Hz
Circuit breakers 50 A 32 A
Power zones Two Two
Minimum power requirementsat customer site
l Two 50 A, three-phasedrops per bay.
l PDU A and PDU B requireone separate three-phaseDelta 50 A drops foreach.
Two 32 A, three-phase dropsper bay.
a. L = line or phase, N = neutral, G = groundb. An imbalance of AC input currents may exist on the three-phase power source feeding the
array, depending on the configuration. The customer's electrician must be alerted to thispossible condition to balance the phase-by-phase loading conditions within the customer'sdata center.
Best Practices for AC Power Connections
104 Site Planning Guide VMAX 100K, VMAX 200K, VMAX 400K, with HYPERMAX OS