power to dell poweredge m1000e blade server enclosures dell/pow… · power to dell poweredge...

James Hutten, Senior Marketing Strategist, Enterprise Product Group, Data Center Infrastructure

Barry Gruetzmacher, Eaton Global Programs Manager for Dell

Data Center Infrastructure (DCI)

Power to Dell PowerEdge M1000e

Blade Server Enclosures

Dell options for delivering reliable, clean power to

high-performance blade servers and support systems

Power to Dell PowerEdge M1000e Blade Server Enclosures

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Contents

Introduction ............................................................................................................... 4

Focus on energy efficiency ............................................................................................ 4

The internal power system of a PowerEdge M1000e system .................................................... 5

Dell power systems for Dell blade systems ......................................................................... 6

Six steps to a blade-optimized rack power infrastructure ...................................................... 6

1. What type of input power is available in the facility? .................................................... 7

Input power: Single-phase or three-phase? ................................................................. 7

What is the input voltage? ..................................................................................... 8

2. What components will be installed in the rack? ........................................................... 9

3. How much power will those components require? ...................................................... 10

Determine the power consumption of the equipment to be protected. ............................ 11

Allow extra headroom to accommodate electrical codes, growth and redundancy. .............. 12

Select Dell rack UPSs and PDUs that meet the calculated energy demands. ....................... 13

4. What type of power connections do you need? .......................................................... 15

5. How critical are the applications being supported? ..................................................... 15

Protect against PSU or AC power source failures with redundancy options. ....................... 15

Choose the UPS topology that delivers the right degree of protection. ............................. 17

Extend battery runtime during power outages. .......................................................... 18

6. How much visibility into power conditions do you need? .............................................. 18

Power monitoring, management, and control at the UPS level ....................................... 18

Basic power distribution without local or remote power metering .................................. 18

For visibility into power flowing through the PDU ....................................................... 18

Installing Dell UPSs and PDUs ........................................................................................ 19

Installing UPSs .................................................................................................. 19

Installing PDUs ................................................................................................. 19

Connecting the PDU to the blade chassis ................................................................. 19

Dell: The logical choice for powering Dell blade servers ...................................................... 19


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Tables Table 1. PDU power ratings: North America...................................................................... 8

Table 2. PDU power ratings: International ....................................................................... 8

Table 3. Supported power supply configurations ................................................................ 9

Table 4. Representative power consumption for blade modules ........................................... 11

Table 5. Maximum output from three-phase PDUs based on amperage and voltage .................... 13

Table 6. Top Dell PDUs for PowerEdge M1000e deployments ............................................... 14

Table 7. Top Dell UPS Picks for PowerEdge M1000e deployments.......................................... 14

Figures

Figure 1. PowerEdge M1000e blade enclosure .................................................................. 10

Figure 2. Two PDUs can provide AC power source redundancy for a fully loaded chassis .............. 15

Figure 3. Power supply redundancy (N+N) and AC power source redundancy ............................ 16

Figure 4. Power supply redundancy (N+1) with single AC power source ................................... 16

Figure 5. No power supply redundancy (N+0) and single AC power source ................................ 17

Executive Summary

The name Dell is virtually synonymous with servers, but many IT professionals don’t

know that Dell also offers power protection, backup power, and power distribution

products for those servers.

Energy-efficient Dell uninterruptible power supplies (UPSs) match the power requirements of Dell IT equipment, with a consistent physical

appearance and user interface.

Dell power distribution units (PDUs) deliver the power density, voltage/amperage, and receptacle count needed for blade deployments globally—without taking up valuable U space. Depending on the power source, you can power two blade chassis from a single Dell PDU.

This paper discusses the internal power workings of Dell blade systems and six simple

steps to selecting the optimal power architecture to serve and protect them.


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Introduction Data center managers grapple with continually escalating demands and constraints—the pressures to

deliver more computing power in less space, with more visibility and reliability, at less power

consumption and cost, with more flexibility and adaptability—all achieved with less budget and staff.

Dell blade servers address these challenges in a cost-effective, energy-efficient manner that enables

organizations to rapidly deploy new services and shift the focus of IT spending from fixed maintenance

to strategic investment.

The Dell PowerEdge M1000e blade chassis uses a Dell-engineered design with several patents-pending

to deliver modularity, high density, and innovative power and cooling in an easy-to-use package. The

10U enclosure supports up to 16 server modules and up to six network, storage, and input/output (I/O)

modules. A high-speed midplane connects the server modules in the front with the power, I/O, and

management components in the rear of the chassis.

Focus on energy efficiency

Dell leads the industry in power/performance efficiency with its IT solutions, and the PowerEdge

M1000e continues this tradition. A modular system has many advantages over standard rackmount

servers in terms of power optimization, and this aspect was a focal point throughout the design and

development of the PowerEdge M1000e enclosure.

Advanced power management capabilities with power sharing ensure that the full capacity of the

chassis power supplies is available to all server modules. To maximize power efficiency, the M1000e

blade chassis uses active zoned cooling, new fan technologies, ultra-efficient power supplies with

dynamic control and power monitoring, plus regulators and board design optimized for power and

cooling efficiency.

This focus on energy efficiency has proven itself in the field. For example, for wind farm developer

Renewable Energy Systems (RES), an energy-efficient cluster of Dell blade servers helped reduce power

consumption by about 75 percent while minimizing server footprint.

The energy-smart opportunities don’t stop at chassis and server design. To maximize performance and

energy efficiency from a PowerEdge M1000e blade chassis, pair it with power quality, backup power,

and power distribution systems engineered by Dell for Dell high-performance computing environments.

To maximize performance and energy efficiency from a Dell

PowerEdge M1000e blade chassis, pair it with power quality, backup

power and power distribution systems engineered by Dell for Dell

high-performance computing environments.


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The internal power system of a PowerEdge M1000e system

Power for a Dell PowerEdge M1000e blade chassis is provided through a set of power supply units

(PSUs) installed in the rear of the enclosure. Each PSU can deliver 2360 or 2700 watts of power to the

system at 12 Volt DC. (PSUs take in single-phase 180‐264 Volt AC and convert it to 12 Volt DC to supply

to internal modules). Three PSUs generally provide enough power for a loaded PowerEdge M1000e

system. Some fully loaded PowerEdge M1000e systems require four or more PSUs. The enclosure can

hold six PSUs to support various redundant modes and power levels.

The midplane carries all 12 Volt DC power for the system, both main power and standby power. Server

modules, I/O modules, fans, and integrated keyboard/video/mouse (iKVM) are powered by 12V main

power. The management controller, display, and control panel are powered by 12V standby power,

which ensures that chassis-level management is operational whenever AC power is present, even when

the chassis is in standby state.

A Chassis Management Controller (CMC) performs the following power monitoring and management

functions for the enclosure:

Power monitoring: The CMC reports the real-time AC power draw for the enclosure, as well as

time-stamped maximum and minimum AC power draw.

Power management: The CMC manages and allocates the system power budget, ensuring that

sufficient power is available based on the number of PSUs in use, redundancy status, and

system configuration—within user-selectable parameters for power redundancy, power

priorities for enclosure slots, or power limits set on the enclosure.

The CMC supports an optional Dynamic Power Supply Engagement (DPSE) mode. When this mode is

enabled, the CMC keeps track of overall power consumption within the system, maximum potential

power requirements of the servers and chassis, and power redundancy requirements. Based on this

information, the CMC can enable or place PSUs into standby as needed in order to drive up utilization

on the active power supplies and thereby optimize overall power efficiency.1

With or without DPSE mode enabled, the PSUs get their power from one or more external power

distribution units (PDUs) through jumper power cords. The PDUs, in turn, get their power from the

main AC power source (rare) or more commonly, from an uninterruptible power system (UPS).

The right choices in UPS and PDU configuration can maximize the power and performance benefits of

the blade system. That’s why Dell has engineered UPSs and PDUs optimized for use with PowerEdge

M1000e systems.


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Dell power systems for Dell blade systems As part of our overall power and cooling strategy, Dell offers some of the industry’s highest-efficiency

power infrastructure solutions:

Dell UPSs match the power requirements of Dell IT equipment, with a consistent physical appearance and user interface. High-efficiency operation saves on power and cooling. Dell UPSs offer many of the same features you expect from Dell servers, such as at-a-glance insight into

system status.

Dell PDUs deliver the power density, voltage/amperage and receptacle count needed for blade deployments globally—without taking up valuable U space. You can power two blade chassis from a single Dell PDU. Get plug-and-play flexibility to handle moves, adds, and changes

without an electrician.

Engineered by Dell and optimized for Dell IT environments, Dell UPSs and PDUs offer high efficiency,

reliable power distribution, and an industry-leading, three-year warranty. Open standards enable

compatibility with all standard IT systems.

Six steps to a blade-optimized rack power infrastructure To meet the diverse needs of global customers, Dell offers a broad range of UPSs and PDUs. Dell makes

it simple to choose the right models, with easy-to-use, online selector tools at DellUPS.com and

DellPDU.com.

You get one-stop access to useful information to understand or design a power infrastructure. For

example, on DellUPS.com, you can learn about power and power products, search for models by

different variables, and perform a quick calculation of power requirements. You can download Visio

images showing the logical internal structures of Dell IT and infrastructure equipment, or download the

full documentation for Dell power products. If you are researching solutions that also include power

protection and backup, DellUPS.com provides information on PDUs and UPSs all in one place.

Just answer some basic questions in either of these sites, and the selector tool quickly narrows down

the options to identify the best UPS or PDU models for your needs. You don’t have to know all the

details; the selector tool takes care of that. But if you do want to know, this paper outlines six key

considerations that weigh into the decision.

1. What type of input power is available in the facility?

2. What components will be installed in the rack?

3. How much power will those components require?

4. What type of power connections do you need?

5. How critical are the applications being supported?

6. How much visibility into power conditions do you need?

Dell offers UPSs in rack, tower, and rack/tower combination form

factors. This paper focuses on rack UPSs designed to partner with the

Dell PowerEdge M1000e blade chassis.

http://dellups.com/

http://www.dellpdu.com./


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1. What type of input power is available in the facility?

Input power: Single-phase or three-phase?

Single-phase power uses one phase of AC (alternating current) power. Most residences, small- to

medium-sized businesses, and remote office locations have single-phase power. Three-phase power

uses three single phases together, with each single-phase alternating current reaching its peak

(delayed by one-third) at offset times. Three-phase power is more efficient for transferring power for

higher wattage installations and over long distances. Three-phase power is used in the utility grid, in

facilities that power heavy-duty motors, in medium to large data centers, and for other large loads.

At the rack level in a typical data center or equipment room, power distribution can be either

single-phase or three-phase:

For lower to mid-density racks—such as a rack of 1U or 2U servers or with one PowerEdge M1000e server—a single-phase PDU serves the need quite well.

For higher-density racks, such as one with a PowerEdge M1000e server with higher power

demands or up to three PowerEdge M1000e blade chassis, a three-phase PDU is a better choice.

Higher-power, three-phase PDUs can transfer almost twice as much power (1.73 times as much) as

equivalent 208V1, single-phase circuits on the same size conductors. For higher density racks and data

center environments, switching from single-phase 208V to three-phase 208V distribution delivers 73

percent more power.

Table 1 shows maximum wattage available at representative voltages and amperages for single-phase

or three-phase power, for North America and internationally.

1 208V is common to North America. Standard voltage varies by country and local regulations.

The Dell online configuration tool is designed to create an in-rack

power solution for one, two, or three Dell PowerEdge M1000e chassis

in a rack (depending on the power source) with a custom combination

of server, network, storage, and I/O modules in the chassis.


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Table 1. PDU power ratings: North America

Input/Output Voltage Phase Max Watts supported

20 Amp

120V / 120V 1-phase 1,920

208V / 208V 1-phase 3,328

415V / 240V 3-phase (Wye) 3P+N+G 11,000

30 Amp

120V / 120V 1-phase 2,880

208V / 208V 1-phase 4,992

208V 3-phase (Delta) 3P+G 8,650

60 Amp

208V 3-phase (Wye) 3P+G 17,300

Table 2. PDU power ratings: International

Input/Output Voltage Phase Max Watts supported

20 Amp

230V / 230V 1-phase 3,680

400V / 230V 3-phase (Wye) 3P+N+G 11,000

32 Amp

230V / 230V 1-phase 7,360

400V / 230V 3-phase (Wye) 3P+N+G 22,000

What is the input voltage?

Wherever you are in the world, there’s a Dell UPS and PDU that supports the local voltage. Input

voltage for blade servers is typically 208V in North America, 220V and 230V in Europe and Asia, and

200V in Japan. Voltages can vary based on code, legacy installations, and new distribution models.

Dell PDUs are available in 100V, 120V, 200V, 208V, 208V three-phase, 230V and 400V models. However,

best practices recommend equipping the blade server infrastructure with a 208V power source in

North America (Mexico, U.S. and Canada); 110V power sources are not efficient enough to effectively

support high-density server deployments.


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Dell PowerEdge M1000e enclosures can be configured with a choice of power supply types:

A 2360W power supply supporting 208-240V AC input

A 2700W dual-voltage power supply that can support 208-240V or 110/115V2

An enclosure can have a mix of 2360W and 2700W power supplies, as long as they are all running 208–240V

Table 3. Supported power supply configurations

208-240V Source Power

Up to six 2360W power supplies, or

Up to six 2700W power supplies, or

A mix of up to six 2360W and 2700W power supplies

2. What components will be installed in the rack?

The PowerEdge M1000e blade chassis supports up to 16 half-height server modules—each occupying a

slot accessible in the front of the enclosure—or a mix of other form factors, such as full-slot or

dual-slot widths.

The mechanical slots in the enclosure can support servers that are twice the height and/or width of the

half-height module. Server modules can be freely located within each two-by-two slot, half-height

quadrant. The mechanical design of the PowerEdge M1000e has support structures for half-height

server modules above or below double-width server modules, and for half-height server modules side

by side with full-height server modules, as shown in Figure 1.

2 Derated at approximately 1350W


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Figure 1. PowerEdge M1000e blade enclosure

Below are some sample configurations, to illustrate how modules can be mixed in a chassis (depending

on the power source):

Up to 16 PowerEdge M710HD or M610 half-height blade modules

Up to eight PowerEdge M915 full-height blade modules

Seven full-height modules and two half-height modules

Four full-height modules and eight half-height modules

3. How much power will those components require?

Determining the rating of rack-level power infrastructure to support blade deployments is a relatively

straightforward calculation:

Add up the anticipated or actual power consumption of the blade chassis and modules. (Even if the U space is available, thermal mitigation becomes an issue beyond three blade chassis in a

rack.)

Consider extra headroom to accommodate growth and change if these are future IT considerations

Designed from the ground up to support current and future

generations of server, storage, networking, and management

technologies, the Dell PowerEdge M1000e includes the headroom

necessary to scale your environment for the future.


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Add needed capacity to support redundancy configurations, where a UPS or PDU might be expected to cover for a counterpart that becomes unavailable or loses its power source.

Determine the power consumption of the equipment to be protected

Add up the power consumed by the equipment to be powered, such as server modules, I/O modules,

storage devices, network components, and the chassis itself. There are several ways to determine how

much power these components will require.

Option 1: Refer to the equipment’s stated power consumption figures

The PowerEdge M1000e chassis consumes 126W. Blade modules vary in their power usage based on

processor type, processing intensity, and load. Table 4 lists the power consumption figures for sample

PowerEdge server modules at various workloads.3

Table 4. Representative power consumption for blade modules

Blade Module

Workload

Power Usage Per Module

PowerEdge M710HD Computational Transactional Memory-intensive

238W 231W 206W

PowerEdge M610 with 56xx processors

Computational Transactional Memory-intensive

232W 226W 203W

PowerEdge M915 Computational Transactional Memory-intensive

453W 443W 413W

PowerEdge M910 Computational Transactional Memory-intensive

506W 496W 651W

3 Information from Dell Energy Smart Solution Advisor (ESSA), November 2011. Actual power consumption may vary based on configuration.

Dell UPSs come in a variety of power ratings, from 500W–5600W.

Dell PDUs support from 3.6kW to 22kW. To simplify selection, Dell

sizes UPSs and PDUs by watts rather than by volt-amperes (VA) and

provides easy-to-use online selection tools.


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The Dell online configuration tool automatically calculates PSU and chassis power when determining

final power consumption. For example, assuming 90 percent PSU efficiency:

One chassis (126W) plus 16 PowerEdge M710HD blade modules (238W) and associated support modules require 4125W of input power.

One chassis (126W) plus eight PowerEdge M915 blade modules (453W) and support modules

require 3648W of input power.

Both configurations could be served by two 2700W PSUs (total of 5400W) in a configuration without full

power redundancy.

Adjust power consumption figures to reflect actual utilization. The power usage figures shown in the

chart are for three different types of workload. Actual power usage may be much lower. For example,

a blade module that consumes 300W at 100 percent load might only use about 70W when running at

normal load, only 100W during peak times, and a negligible amount of power when in sleep/standby

mode.

Since power consumption tracks very closely with utilization, you can use your knowledge of server

utilization to estimate power consumption with relative accuracy.

Option 2: Use the Dell online power calculator

What could be simpler? Visit Dell.com/Calc to use the free Energy Smart Solution Advisor (ESSA) to

calculate energy consumption for Dell enterprise systems or a group of Dell enterprise systems.

Option 3: Measure the actual power consumption of equipment in service

The latest generation of servers features built-in power monitoring using their out-of-band

management capabilities such as the Integrated Dell Remote Access Controller (iDRAC).

Dell Metered PDUs can monitor power usage in real time and provide accurate power usage statistics.

Dell UPSs also provide real-time and historical tracking of power usage.

Allow extra headroom to accommodate electrical codes, growth and redundancy

What are the local industry requirements for sizing electrical gear?

When designing a power distribution setup, it is important not to approach the limits on each phase

and each circuit breaker—and to balance the power load equally among phases.

What rate of growth do you anticipate in the next year? Five years?

You don’t want to run out of power capacity within that planning window. If a blade chassis is only

partially populated, consider modules that may be added later, including future high-performance

designs that may draw more than today’s maximum of 651W per blade.

To ensure you won’t soon outgrow the rack power infrastructure, you could provision UPS and PDU

capacity to match the practical maximum power draw of the chassis under your redundancy scheme.

For example, in a 3+3 redundancy arrangement (typical), the chassis would need:

2835W of input power per PSU to produce 2700W of output power (assuming 95 percent PSU efficiency)

8500W of input power per three PSUs, with the remaining three PSUs on standby in case of a

power outage on the primary power source or a PSU failure

http://www.dell.com/calc


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The UPS(s) and PDU(s) would therefore need to be sized for 8500W of input power.

What type of redundancy will be implemented at the PSU level?

For PSU redundancy, operators have the option to change the redundancy rules to add more blades and

more power. You could go to 4+1, whereby a power supply stands by in case of an issue with one of the

other four.

Select Dell rack UPSs and PDUs that meet the calculated energy demands

Dell UPSs and PDUs were designed to address the high power requirements of blade deployments.

Two PDU options have been specifically designed for higher density PowerEdge M1000e system

deployments:

A 24A, three-phase PDU is recommended for customers who have or are willing to implement 30A three-phase service (North America). Because 30A, three-phase power is the most common data center high power feed, this PDU has been sized to fit within that envelope, taking one feed per set of three PSUs under any loading condition. The three-phase power grid is

complemented by the 3+3 redundant power system of the PowerEdge M1000e.

A 48A, single-phase PDU is recommended for customers who have or are implementing 60A single-phase service. (North America)

These PDUs are designed for intensive blade server applications. For example, North America

customers could deploy two 30A, three-phase PDUs that each provide 11kW of power (22kW total), to

support two or three fully populated blade chassis. In international markets, you can achieve the same

power density with a single, 32A, three-phase PDU.

Table 5. Maximum output from three-phase PDUs based on amperage and voltage

Input / Output Voltage Phase Maximum watts supported

North America models

415V / 240V, 20 Amp 3-phase (Wye) 3P+N+G 11,000

208V / 208V, 30 Amp 3-phase (Delta) 3P+G 8,650


International models



Blade server modules are typically powered by separate power

sources for protection in case of a power supply failure or utility

outage. When sizing power components for a redundancy

configuration, be sure to plan ahead for the possibility that one UPS or

PDU might be required to carry the full load for two or more power

supplies in the blade chassis.


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Table 6. Top Dell PDUs for PowerEdge M1000e deployments

Feature Single-Phase PDU Three-Phase PDU

Mounting Zero U Vertical

Outlets Three C19 outlets Six to 12 C19 outlets

Input Voltage Single -phase 200 – 240 VAC nominal

Three‐phase 200 – 240 VAC or 380 – 415 VAC nominal

Line Frequency 47 to 63 Hertz

Recommended AC service 30A North America and Japan 32A International

16A, 32A (International)

20A, 30A or 60A (North America and Japan)

Fixed Input Plug/Cord Rating NEMA L6-30P, NA and Japan IEC 309 single pole three-wire 220-240VAC 32A (International)

IEC 309 three-pole, four-wire,

380‐415 VAC, 16A - 32A (North America, Japan and International)

Output Rating Voltage 200‐240 VAC 60/50 Hz, 1‐phase

Output Rating Current (IEC320 C19) 16 Amps

Circuit Breaker, Over Current Protection 20A, per outlet receptacle

Table 7. Top Dell UPS Picks for PowerEdge M1000e deployments

Dell UPS Model Form factor

Rating Input/Output Voltage

Dell UPS Rack, Line Interactive 4U 5600W 208V / 208V, 230V / 230V

Dell UPS Rack Online 4U 5600W 208V / 208V, 230V / 230V



For higher-density applications, Dell complements its UPS portfolio with three-phase products from

Eaton, most notably the modular Eaton BladeUPS (12-60 kW), designed specifically for blade

deployments, and the Eaton 9390 (20-160 kVA).

Dell is the first leading UPS provider to rate UPS models by wattage to

make it simple and straightforward to select the right UPS model using

the Dell Energy Smart Solution Advisor (ESSA) or Dell Data Center

Capacity Planner (DCCP).

Other UPSs are typically rated by volt-amperes (VA), which reflects

the apparent power draw of the equipment and not the actual power

draw, which can be quite different.


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4. What type of power connections do you need?

Blade servers significantly reduce the number of power cords at the rack level, because only a

maximum of 6 power cords (one per PSU) are needed to power up to 16 blade modules as well as

associated support components in the chassis.

Dell offers PDUs tailor-made for this scenario, providing three C19 connectors and power cables. With

only two PDUs, you can power six PSUs. If the PDUs receive their power from different UPSs, the

configuration provides AC power source redundancy as well as PSU-level redundancy.4

If the rack contains a mix of PowerEdge M1000e chassis and traditional 1U or 2U servers, Dell offers

PDUs with a mix of C19 and C13 connectors.

Figure 2. Two PDUs can provide AC power source redundancy for a fully loaded chassis

5. How critical are the applications being supported?

Protect against PSU or AC power source failures with redundancy options

The PowerEdge M1000e uses redundant and hot‐pluggable power supplies to provide maximum uptime.

You can further enhance uptime by ensuring redundancy in the incoming AC power source.

Since only three power supplies are required to power a fully populated blade chassis, the PowerEdge

M1000e supports a variety of redundancy models:

4 Two PDUs can provide full AC power source redundancy for a fully loaded chassis, as long as source power is available to deliver the necessary wattage to each set of PSUs.

PDU 2 and AC power

source 1 distributes

power to power

supplies 4, 5 and 6.

PDU 1 and AC

power source 1

distributes power

to power supplies

1, 2 and 3.


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With AC power source redundancy and power supply redundancy (N+N), half of the power supplies are connected to first AC power source, while the other half are connected to a

second AC power source. (Figure 3)

This approach protects against loss of AC power and power supply failure. For example, if one

AC power source fails and three power supplies lose power on AC power source 1, the three

power supplies remain powered on AC power source 2 to keep the PowerEdge M1000E running.

Figure 3. Power supply redundancy (N+N) and AC power source redundancy

With power supply redundancy (N+1), the additional power supply in the chassis is kept as a spare, ready to take over for any other power supply that fails or loses power. The chassis and the modules powered by the unavailable PSU will not power down. (Figure 4)

The N+1 configuration provides protection from power supply failures but not AC power source

failures.

Figure 4. Power supply redundancy (N+1) with single AC power source


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With no power supply redundancy (N+0), all PSUs in the chassis receive their power from one AC power source. This configuration would typically be seen in a clustered computing environment, where parallel processing across multiple system chassis provides the necessary

redundancy.

The N+0 configuration provides no protection from power supply failure or AC power source

failure.

Figure 5. No power supply redundancy (N+0) and single AC power source

Given the critical nature of most services running on blade servers, full N+N power supply redundancy

is the most common, with a standby power supply for each active power supply, and AC power source

redundancy in case of a failure of the primary AC power source. Other configurations are available, but

far less common. For example:

3 + 1 (power supply redundancy)

3 + 0 (non-redundant power supply)

2 + 2 (AC power source and power supply redundancy)


2 + 0 (non-redundant)


Choose the UPS topology that delivers the right degree of protection

A line-interactive UPS regulates voltage by boosting input utility voltage up or moderating it down as

necessary before allowing it to pass to the protected equipment. This type of UPS efficiently protects

against sags, surges and outages, brownouts, and over-voltage conditions.

Considering the number and importance of applications that may be riding on one blade chassis, an

online UPS is usually recommended. This UPS converts the incoming AC power to DC and back to AC

again to completely isolate equipment from all nine of the anomalies common in utility power.


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Dell online UPSs use a groundbreaking multi-mode technology that enables the UPS to operate at up to

97 percent efficiency or better under normal utility conditions. The UPS continually monitors incoming

power and balances the need for efficiency with the need for premium protection to match the

conditions of the moment.

Extend battery runtime during power outages

Internal batteries in Dell UPSs can run blade servers for a short period during a power outage, giving

system administrators time to gracefully shut down connected systems or transfer to generator power.

However, in blade deployments, even brief periods of downtime are costly and disruptive. In

virtualized environments especially—where a dozen or more applications could be riding on a single

server—it is far better to keep systems running rather than shut down and reboot many applications.

For this scenario, an external battery module (EBM) can extend battery runtime three or four times

over for nominal extra cost and minimal footprint (only 1U to 3U, depending on the UPS model being

supported).

6. How much visibility into power conditions do you need?

Power monitoring, management, and control at the UPS level

Every Dell UPS has a large local display to view system status and configure UPS parameters and

options right at the unit. Dell UPSs can also be securely monitored and managed from anywhere over

the company LAN or the Internet.

Dell UPSs come with a serial Web interface and Dell power management software, which includes:

Dell UPS Local Node Manager (ULNM) for monitoring/managing a single UPS

Dell UPS Multi-UPS Management Console (MUMC) for managing multiple UPSs and ULNM agents across the network

An optional network management card supports Ethernet connectivity for remote monitoring and

management. Dell UPS management software integrates into your Dell OpenManage facility

management system and with virtualization solutions from VMware, Microsoft, and Citrix to gracefully

manage power for virtual machines (VMs).

Basic power distribution without local or remote power metering

You can economize with a basic PDU that provides reliable power distribution at surprisingly affordable

cost. The portfolio of Dell basic PDUs includes single-phase options up to 7300W and three-phase

options from 11 kW to 22 kW, packed with output receptacles. These PDUs are ideal for blade

deployments where cost is an issue or power monitoring is provided by other means.

For visibility into power flowing through the PDU

Choose a Dell metered PDU, which continuously measures and records the current flowing through the

PDU on each phase. User-defined alarms warn of potential circuit overloads, so you can take proactive

action. With logs of power utilization trends, you can make informed decisions about where equipment

can be safely added in a rack. These single and three-phase PDUs are ideal for PowerEdge M1000e

deployments, because modules can be so easily added and changed, risking tripped circuits.


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A dual-color, backlit LCD screen on the front of the PDU displays advanced power calculations by phase

and for the whole PDU, with color-coded alarms. Remote administrators can see into PDU activity and

status from anywhere via secure Web, SNMP, or Telnet interfaces. Metered PDUs also integrate with

the blade chassis iKVM as well as external KVM stations and the Dell Management Console for a

consolidated infrastructure overview.

Installing Dell UPS and PDU

Installing a UPS

Space-saving, high-density rack-mounted UPSs can be installed in the same rack as blade chassis or in

other racks, as space permits. A dedicated UPS rack is not required. Models are available for both

standard and short-depth racks.

Dell rack UPSs ship with Ready Rails™ that enable you to install the UPS quickly without using tools.

Simply snap in, plug in, and you are ready to deploy.

Installing a PDU

Dell Metered PDUs are available in slim 42U-tall units that install in side or rear pockets of the rack.

Dell Basic PDUs are available in half-height and full-height vertical models and a horizontal 0U/1U

model for standard cabinets.

Dell PDUs install without tools into Dell racks (or into third-party racks with adapter kits) and integrate

seamlessly with Dell Management Console and Dell OpenManage software. These PDUs support

worldwide standard high-power connections for ease of installation.

Connecting the PDU to the blade chassis

The PowerEdge M1000e blade chassis comes with six 2-foot (0.61-meter) power jumper cords, one for

each PSU. This is the preferred jumper cord to connect the PDU to each PSU, because it supports the

intention of placing the PDU close to PSUs and simplifying cable management.

A strain relief bar on the rear of the PowerEdge M1000e chassis secures the data cables and jumper

power cords. A power cord retainer on each PSU handle secures the jumper power cord to protect it

from being disconnected by vibration or cable sag.

Dell: The logical choice for powering Dell blade servers Dell is proud to offer rack-level power infrastructure optimized for Dell PowerEdge M1000e blade

systems:

Dell line-interactive and online UPSs provide reliable, computer-grade power, run at 97 percent

or higher efficiency, install without tools, use LCDs in place of LEDs for local monitoring, and

provide ratings in watts (not VA) for easier model selection.

Dell basic or metered PDUs deliver the required power density, C19 outlets, redundancy and

visibility for PowerEdge M1000e blade systems, however you configure them, today and for the

future.


20

Dell rack power solutions are an especially strong choice for protecting Dell blade servers. These are

the only power products designed to harmonize with Dell equipment, integrate with Dell management

systems, and use familiar Dell interfaces for monitoring and administration. With a Dell rack power

infrastructure, you can have a single source for IT equipment and the power to fuel it, covered by

Dell’s industry-leading three-year warranty.

With a broad range of choice in power ratings, form factor, power interfaces, and monitoring

capabilities, you can establish the blade power infrastructure that best serves your needs. For

example, one organization might have one or two 5600W UPSs connected directly to the blade chassis

with no PDU. Another might distribute the power from a building UPS to an 8.6kW vertical-mount PDU

in the rack, powering blades through 21 C13 receptacles and six C19 receptacles. An organization that

wants to streamline the power infrastructure would benefit from any of the 42U, metered,

three-phase PDUs connected directly to the building UPS.

In a few simple steps—with the help of Dell’s online calculator—it is easy to select the best UPS and

PDU models for your needs from the Dell power portfolio. Many factors weigh into the choice, but you

don’t need to juggle all the details. Dell makes it easy.

Use the Dell Energy Smart Solution Advisor to help plan, right-size, and align the compute and

infrastructure equipment for maximum efficiency (www.dell.com/calc).

Visit Dell.com/PDU, DellPDU.com, or DellUPS.com for more information about power quality, backup

power, and power distribution systems designed for the high-performance demands of PowerEdge

M1000e blade systems.

This document is for informational purposes only and may contain typographical errors and technical

inaccuracies. The content is provided as is, without express or implied warranties of any kind.

© 2012 Dell Inc. All rights reserved. Dell and its affiliates cannot be responsible for errors or omissions in

typography or photography. Dell, the Dell logo, ReadyRails, and PowerEdge are trademarks of Dell Inc. Microsoft is

a registered trademarks of Microsoft Corporation in the United States and/or other countries. Other trademarks

and trade names may be used in this document to refer to either the entities claiming the marks and names or

their products. Dell disclaims proprietary interest in the marks and names of others.

June 2012| Rev 1.0

http://www.dell.com/calc

http://dell.com/PDU

http://www.dellpdu.com/

http://dellups.com/

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