ispt vnx fundamentals srg
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Copyright © 2014 EMC Corporation. Do not copy - All Rights Reserved.
Welcome to VNX Fundamentals.
Copyright © 1996, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 EMC Corporation. All Rights Reserved. EMC believes the information in this publication is accurate as of its publication date. The information is subject to change without notice.
THE INFORMATION IN THIS PUBLICATION IS PROVIDED “AS IS.” EMC CORPORATION MAKES NO REPRESENTATIONS OR WARRANTIES
OF
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KIND
WITH
RESPECT
TO
THE
INFORMATION
IN
THIS
PUBLICATION,
AND
SPECIFICALLY
DISCLAIMS
IMPLIED
WARRANTIES
OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Use, copying, and distribution of any EMC software described in this publication requires an applicable software license.
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All other trademarks used herein are the property of their respective owners.
© Copyright 2014 EMC Corporation. All rights reserved. Published in the USA.
Revision Date: February 2014
Revision Number: MR-1WP-VNXFD
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Copyright © 2014 EMC Corporation. Do not copy - All Rights Reserved.
This course covers the EMC VNX Series. It includes the EMC VNX Series models, architecture,
features, functions, capabilities, and management. The peripheral products associated with VNX
are introduced.
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This module focuses on the VNX product benefits and use cases. Peripheral and/or adjacent
products, tools and options are considered and positioned at a fundamental level.
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The VNX Series unifies EMC’s file‐based and block‐based offerings into a single product that can be
managed with one easy to use GUI. In addition, Object storage solutions are available that make
use of the VNX storage systems.
The
VNX
Series
is
a
storage
solution
designed
for
a
wide
range
of
environments
that
include
midtier‐to‐enterprise. The back end storage connectivity is via Serial attached SCSI (SAS) which
provides up to 6 Gb/s connection.
The VNX unified storage platforms support the NAS protocols (CIFS for Windows and NFS for
UNIX/Linux, including pNFS), patented Multi‐Path File System (MPFS) as well native block protocols
(iSCSI and Fiber Channel).
VNX is optimized for:
• Core IT applications like transactional workloads – Oracle, SAP, SQL, Exchange or SharePoint.
•
Server virtualization
and
end
user
computing/VDI.
• Applications that need traditional file, or block or unified storage.
VNX is also a good fit for partner lead configurations optimized for virtual applications with
VMware and Hyper‐V integration.
The VNX with MCx (multi‐core optimization) architecture unleashes the power of Flash, taking full
advantage of the latest Intel multi‐core technology with the introduction of MCx.
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The pressure in Exchange environments to eliminate backup windows and reduce recovery times is
stronger than ever before. With dynamic, policy‐based protection management, these dynamic
environments can easily exceed demanding recovery objectives using EMC VNX advanced
technologies such as snapshots and continuos protection technology. It also helps efficiently use
storage resources and optimize protection for Microsoft Exchange. The VNX storage array
performance is optimal under heavy Exchange workload.
Traditionally, the best practices for optimizing storage performance involved manual, resource‐
intensive processes. The VNX allows SQL administrators to leverage an easy‐to‐use and potentially
hands‐off mechanism for optimizing the performance of the most demanding applications.
Automating the movement of data between storage tiers saves both time and resources. The VNX
eliminates the need to spend hours manually monitoring and analyzing data to determine a storage
strategy, then maintaining, relocating and migrating LUNs (VNX logical volumes) to the appropriate
storage tiers.
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Online Transaction Processing (OLTP) database applications tend to be mission‐critical and usually
have stringent I/O latency requirements. Traditionally, these OLTP databases are deployed on a
huge number of rotating Fibre Channel (FC) spindles to meet the low I/O latency requirement.
Consequently, the effective capacity utilization of these spindles is very low. VNX reduce the need
to buy more drives to keep up with database growth. Also the VNX automatically and
nondisruptively migrates hot and cold data between the available storage tiers, thereby improving
the effective storage utilization.
The common business requirement in SAP environments is reducing TCO while improving
performance and service level delivery. Frequently, responsiveness to sensitive SAP applications
has deteriorated over time due to increased data volumes, unbalanced data stores, and changing
business requirements. By using VNX with block data, SAP deployments can gain a significant
performance boost without the need to redesign the applications, adjust the data layouts, or
reload significant amounts of data. With automated sub‐LUN level tiering and extended cache,
Administrators can properly balance data distribution across the tiers that allows capacity and
performance optimization.
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The VNX Series is optimized for virtualization, and thus supports all leading Hypervisors, simplifies
desktop creation and storage configuration. VNX leverages advanced technologies to optimize
performance for the virtual desktop environment, helping support service level agreements.
Virtualization management integration allows the VMware administrator or the Microsoft Hyper‐V
administrator to
extend
their
familiar
management
console
for
VNX
related
activities.
VMware vStorage APIs for Array Integration (VAAI) for both SAN and NAS connections, allows the
VNX to be fully optimized for virtualized environments. EMC Virtual Storage Integrator (VSI) is
targeted towards the VMware administrator. VSI supports VNX provisioning within vCenter, full
visibility to physical storage, and increases management efficiency.
In the Microsoft Server 2012 and Hyper‐V 3.0 space, the Array Offloaded Data Transfer (ODX)
allows the VNX to be fully optimized for Windows virtual environments. This technology offloads
storage‐related functions from the server to the storage system.
EMC Storage Integrator (ESI) for Windows provides the ability to provision block and file storage for
Microsoft Windows or for Microsoft SharePoint sites.
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EMC VNX for file provides a GUI tool that directly applies the GPO security settings to the file
systems. It has the same effect as applying the security update from a Windows server, but it takes
significantly shorter time to do so on large and deep directories, because the security settings are
managed locally on the VNX.
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This module covered the VNX solution and its benefits, the key use cases, and the peripheral
products associated with VNX storage systems.
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This module focuses on the VNX modular architecture, terminology, components, configurations,
and models.
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VNX disk drives are held in Disk Array Enclosures or DAE. A storage pool is a single repository of
physical disks from which LUNs may be created. Storage can be provisioned from either Pools or
RAID Groups. A RAID group is a set of disks (up to 16 in a group) with the same type, capacity and
redundancy, on which the Administrator can create one or more Classic LUNs. A Pool is a collection
of disks that are dedicated to create LUNs. A Pool is somewhat similar to a RAID group. However, a
Pool can contain a few disks or hundreds of disks, whereas a RAID Group is limited to 16 disks.
Pools can be heterogeneous (made up of more than one type of drive) or homogeneous
(composed by only one type of drive).
A LUN (Logical unit number) is the identifying number of a SCSI or iSCSI object that processes SCSI
commands. The LUN is the last part of the SCSI address for a SCSI object. The LUN is an ID for the
logical unit, but the term is often used to refer to the logical unit itself.
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Storage processor is the core of the VNX platform. It delivers the VNX Block components and
services and runs VNX OE for Block. The storage processor supports block data with UltraFlex I/O
(Covered later in this module) technology that supports Fibre Channel, iSCSI, and FCoE protocols. It
provides access for all external hosts and the file side of the VNX array.
The VNX
platform
storage
processors
by
design
operate
in
Active/Active
mode.
Active
‐Active
implies that both controllers are active/on‐line and receiving host I/O simultaneously for the
backend storage.
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The Control Station is included in all VNX Unified and VNX File storage arrays to provide
management and monitoring functions. The Control Station runs a customized Linux kernel and
operates VNX for file management services. A second Control Station may be present in some
models for redundancy.
The Control
Station
also
provides
a secure
Administrative interface
to
all
file
‐server
components
– a
single point of management for the whole VNX solution, which can be isolated to a secure, private
network.
The Control Station software is used to install and configure the system, monitor the health of the
primary Data Movers and initiate failover to the standby Data Movers if the primary blade fails. It is
also used to monitor the environmental conditions and performance of all components; and
implement the call‐home and dial‐in support features.
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The Disk Processor Enclosure (DPE) is 3U in size and includes redundant Storage Processors, two
Power Supply/Cooling Modules, and the first set of disk drives. The basic difference between a Disk
Processor Enclosure (DPE) and a Storage Processor Enclosure (SPE) is that the DPEs contain both
Storage Processor and disks. The SPE does not contain disks.
The Storage
Processor
Enclosure
(SPE)
is
4U
in
size
and
houses
each
Storage
Processor
(SPB
and
SPA), Ultraflex I/O modules, Management modules, and Power Supply/Cooling modules.
All Disk Array Enclosures (DAEs) accommodate two or four Link Control Cards (LCC), and two Power
Supply/Cooling modules (PS A and PS B). The LCC’s main function is to be a SAS expander and
provide enclosure services for all drive slots. Each LCC independently monitors the environmental
status of the entire enclosure and communicates the status to the storage processors.
A Data Mover Enclosure (DME) is required for file level access. A DME contains one or two Data
Mover X‐Blades. Each X‐blade has Fibre Channel ports to access data through the SPs as well as
Ethernet ports to provide file data access to users and applications.
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The power supplies provide the information necessary for Unisphere to monitor and display the
ambient temperature and power consumption of the power supply. The power supplies are field
replaceble units (FRUs). Each power supply includes two power LEDs and a status LED. The power
supplies provide adaptive cooling, in which an array adjusts the power supply fan speeds to spin
only as fast as needed to ensure sufficient cooling. The Power Supplies are hot‐swappable and
redundant.
The Standby Power Supply provides battery power to DPE and power to the DAE and SPE on some
VNX model. The VNX with MCx uses a DPE which has the SPS built within the VNX SP (Battery On
Board) except for the VNX8000 (SPE based) which uses independent SPSs.
The VNX series platform can support up to two standby power supplies or dual SPS.
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VNX Series uses I/O Modules in various combinations for front and back‐end connectivity. Each I/O
module is protocol independent and hot swappable.
Options for block I/O include Fibre Channel, Fibre Channel over Ethernet (FCoE) and iSCSI. Options
for file I/O include both 1 Gb/s and 10 Gb/s Ethernet with either copper or optical connections.
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The VNX series ships as a block only, file only or Unified file and block system. The three basic
configurations are:
• Block – Supports block data
• File – Supports file data
• Unified – Supports block and file data
A unified configuration has the same components as a file configuration.
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The VNX with MCx architecture consists of 5 VNX Series platforms that will scale up to 6 petabytes.
The VNX with MCx architecture unleashes the power of Flash to address the high‐performance,
low‐latency requirements of virtualized applications.
VNX Series models are comprised of 5000, 7000 and 8000 class systems. The available models are
VNX5200, VNX5400,
VNX5600,
VNX5800,
VNX7600,
and
VNX8000.
The
hardware
and
connectivity
options scale with each model, providing more power and options throughout the model range.
As seen earlier the VNX with MCx architecture takes full advantage of the latest Intel multi‐core
technology with the introduction of MCx. MCx distributes all VNX data services across all cores – up
to 32.
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The previous generation are comprised of 5000 and 7000 class systems. The available models are
VNX5100 (Block‐only), VNX5300, VNX5500, VNX5700, and VNX7500. The hardware and
connectivity options scale with each model, providing more power and options throughout the
model range.
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VNX Series gateway platforms are NAS heads, only. These platforms access external storage such as
block based VNX, CLARiiON, Symmetrix, or combinations of these platforms for optimal
performance or TCO. VNX gateways allow the back‐end storage to be pooled among the NAS, MPFS
and FC/iSCSI SAN, which improves storage usage and consolidates management. Gateways are
ideal for environments with existing Fibre Channel/iSCSI SANs.
A VNX gateway is very suited when both performance and capacity scaling are required. A VNX
gateway supports up to four back‐end arrays concurrently, delivering increased I/O bandwidth to
the front‐end X‐Blades.
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The VNX‐F, all‐flash configurations, are based on the VNX7600 and leverage the MCx multi‐core
storage software operating environment. The VNX‐F is specifically configured as an all‐flash array
and therefore does not include tiered storage. The flash storage implements enterprise multi‐cell
(eMLC) flash technology.
VNX‐F is
available
in
four
pre
‐configured
block
‐only,
fixed
‐capacity
configurations:
Classic
LUN,
dual
node symmetric Active‐Active, preconfigured RAID 5 (8+1), with optional block de‐duplication and
compression.
VNX‐F is optimized for virtualization and ensures the deployment of virtualized applications on
hypervisor technologies, cloud deployments, high transactions, and high demand databases. (Visit
http://support.emc.com for details)
VNX‐F does not include tiered storage, HDDs (as data drives), File protocols (NFS and CIFS),
additional IO modules, or RAID types other than what is pre‐configured.
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Atmos VE (virtual edition) with VNX in a virtualized infrastructure can be deployed to support
web/cloud applications and storage‐as‐a service. Atmos VE on VNX has four key components: VNX
storage, vSphere, Atmos VMs and Application integration points or access methods.
The key here is that applications consuming storage from any VM will see the system as the large
object store
with
a unified
name
space.
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This module covered the architecture and components of the VNX storage solution. Also this
module identified configurations and models of the VNX storage solution.
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This module focuses on the VNX features, capabilities and the usage of these in an IT environment.
It explains the high availability, storage efficiency, local , performance, and additional features. This
module will also describe the VNX software suites and packs.
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This lesson covers the various VNX series software suites.
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The VNX Series arrays software packaging comes in a variety of suites. These various suites each
contain a unique set of solutions to improve efficiency and availability by simplifying and
automating many storage tasks. Functionality is purchased in the form of a Suite and combinations
of Suites are packaged into software packs. The Total Efficiency pack contains all of the software
suites while the Total Protection Pack only contains the protections suites. The following suites are
available for the VNX arrays.
• FAST Suite – Automatically optimizes the array for the highest system performance and the
lowest storage cost simultaneously.
• Security and Compliance Suite – Keeps data safe from changes, deletions, and malicious activity.
• Local Protection Suite – Is used for protecting and repurposing data.
• Remote Protection Suite – Protects data from localized failures, outages, and disasters.
• Application Protection Suite – Automates application copies and proves compliance.
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This lesson covers Hardware and Component Redundancy, LUN Trespass and VNX Active/Active
mode, Symmetric Active/Active mode, and Network high availability features.
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VNX availability and redundancy features include:
• Dual storage processors with mirrored write cache. Each storage processor contains both primary
cached data for its LUNs and a secondary copy of the cache for its peer storage processor.
• Scalable and redundant X‐Blades (or Data Movers).
• Second Control Station may be present in some models for redundancy.
• RAID protection levels 0, 1/0, 5, and 6 are available and can co‐exist in the same array
simultaneously to match different protection requirements.
• Each disk drive has two data ports. This gives two separate paths to each drive. If an SP fails, or
any component of the path fails, the drive can still be accessed by the other SP.
• Proactive hot sparing enhances system robustness and delivers maximum reliability and
availability.
• Redundant power supplies.
• Battery backup to allow for an orderly shutdown and cache de‐staging to vault disks to ensure
data protection
in
the
event
of
a power
failure.
• In the event of a power failure, the Vault drives (first four disks of first enclousure) provide the
de‐stage area for data in write cache that is not yet committed to the disk.
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LUNs are managed and accessed by a single SP. This process is called LUN ownership. LUN
ownership is automatically assigned to storage processors in a round‐robin fashion when a LUN is
bound.
Both SPs
in
a VNX
array
have
access
to
every
LUN,
I/O
to
each
LUN
comes
only
from
the
SP
that
is
the LUN owner. In the example on the left, SP A owns LUN 0.
If a path goes offline, for example, if SP A is being rebooted due to a software upgrade, all LUNs
from that SP will be “Trespassed” to the other SP.
With the Asymmetric Logical Unit Access, or ALUA, (a request forwarding implementation) an I/O
received by an SP that does not own a LUN is redirected to the other SP without LUN trespassing.
This implementation should not be confused by an active‐active model because I/O is not serviced
by both SPs for a given LUN. The LUN ownership is still in place. I/O is redirected to the SP owning
the LUN.
In the event of a front‐end path failure, there is no need to trespass LUNs immediately. The Upper
Redirector driver will route the I/O to the SP owning the LUNs through the CMI channel.
In the event of a back‐end path failure, there is no need to trespass LUNs immediately. The Lower
Redirector will route the I/O to the SP owning the LUNs through the CMI channel. The host is
transparent to this redirection.
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Now with VNX with MCx architecture EMC has introduced the first phase of an active/active access
model. Symmetric Active/Active allows clients to access a Classic LUN (not supported on pool
LUNs) simultaneously through both SPs for improved reliability, ease‐of management and improved
performance. Since all paths are active, there is no need for the storage processor to "trespass" to
gain access to the LUN “owned” by the other storage processor on a path failure, eliminating
application timeouts. The same is true for an SP failure, as the SP merely picks up all of the I/Os
from the host through the alternate “optimized” path. This capability enables additional LUN
performance, as there is more backend bandwidth that can be served by a single SP or FE port.
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EMC VNX FailSafe Network or “FSN” provides high availability in the event of an Ethernet switch
failure by connecting the two components of the FSN to separate switches. Unlike EtherChannel
and LACP, FSN can maintain full bandwidth when failed over, given the same bandwidth on both
the active and passive configurations. They do not require any special switch configuration. FailSafe
Networks are configured as sets of ports, FastEtherChannels, Link Aggregations, or combinations of
these.
Only one connection in an FSN is active at a time. If the FailSafe device detects that the active
connection has failed, the Data Mover automatically switches to the surviving partner with the
same identity as the failed connection.
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The VNX‐CA (Continuous Availability) provides for increased application availability options with
the ability to transparently move application data between storage arrays or between data centers.
It provides the ability to scale capacity, IO throughput and performance, all accomplished non‐
disruptively.
VNX‐CA
is
based
on
the
VNX5400
and
leverages
EMC
VPLEX
technology.
EMC
VPLEX
allows
customers to move applications and data between VNX arrays within a data center or across data
centers without impacting hosts or users. VNX‐CA also supports Fibre Channel Block‐only
architecture.
The VNX‐CA use cases, in addition to addressing the continuous availability examples, include:
• Application and data mobility
• Non‐disruptive IT refreshes
• Load balancing within a VNX‐CA4 or between VNX‐CA’s
• Enhanced VMware capabilities across VNX‐CAs using vMotion, DRS, HA and/or FT
• Extend Oracle
RAC
over
distance
• Stretch other popular server clusters across VNX‐CA arrays
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VNX‐CA is available in two configurations:
• VNX‐CA2 (2 storage controllers) is the entry solution, with the intention of non‐disruptively
expanding with additional capacity, storage and performance. The VNX‐CA2 consists of one
VNX5400 (block‐only) with the appropriate capacity (up to 250 drives), one VPLEX engine with
two Fibre Channel switches
(that
are
internal
to
the
VNX
‐CA).
• VNX‐CA4 (4 storage controllers) is ideal for a continuously available storage architecture that
allows more storage to be virtualized and enables cross array mobility, workload balancing, and
uninterrupted maintenance on the array. This option offers optimal performance and capacity.
The VNX‐CA4 consists of two VNX5400’s (block‐only) with appropriate capacity (up to 500
drives), one VPLEX engine and two Fibre Channel switches (that are internal to the VNX‐CA).
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This lesson covers the storage efficiency features including Virtual Provisioning, Block Deduplication
and Compression, File Deduplication and Compression, File Level Retention (FLR), and User Quotas.
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VNX Virtual Provisioning improves storage capacity utilization by only allocating storage as needed.
File systems as well as LUNs can be logically sized to required capacities, and physically provisioned
with less capacity. This means storage need not sit idle in a file system or LUN until it is used.
VNX Virtual Provisioning safeguards allow users to keep a track of thinly provisioned file systems
and LUNs.
By
reporting
on
actual
physical
usage,
total
logical
size,
and
available
capacity,
administrators can both predict and set alerts to avoid running out of physical capacity.
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VNX with MCx architecture platforms, support Block level deduplication.
Deduplication of data happens at an 8KB block granularity and requires an 8KB mapping. It can be
set at the pool LUN level and Thin, Thick and Deduplicated LUNs can be stored in a single Pool. The
deduplication domain is the pool itself; deduplication does not take place across pools.
Deduplication occurs out
‐of
‐band
and
is
throttled
to
minimize
host
I/O
impact.
The Block Compression feature provides a further reduction of capacity savings initially provided
by Virtual Provisioning (compression requires Thin LUNs).
The Block Compression feature uses standard data compression algorithms to reduce space
allocated to LUNs. Block compression may be applied to Classic LUNs or Pool LUNs.
Block Compression operates in the background, while the LUNs are available for host access. All
compression and decompression processes are handled by VNX, so no server cycles are consumed
in the process, and no additional server software is required. When sufficient new data is written
to a compressed LUN, the system will automatically attempt to compress the uncompressed data
in the background.
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VNX also support file level deduplication and compression. VNX for File performs all deduplication
processing as a background, asynchronous operation that acts on file data after it has been written
into the file system. It does not process active data or data as it is written into the file system.
Deduplication activity can be throttled to avoid impact on processes serving client I/Os. Once
candidate files
have
been
identified
for
deduplication,
two
activities
take
place:
• Compression: Compression is accomplished by using components similar to those used in VNX for
block LUN compression.
• Deduplication: File‐level deduplication or single instancing is accomplished by using components
of another EMC product called Avamar which duplicates file identification algorithms (file
identification for single instance is accomplished using a hashing algorithm from Avamar).
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VNX File Level Retention is a capability available to VNX for File that protects files in a NAS
environment from modification and deletion until a user specified retention date. FLR enables
organizations to create a permanent unalterable set of files and directories and ensures the
integrity of the data. At the NAS level this effectively provides what is traditionally known as Write
Once Read Many (WORM) access within the VNX for File, and also includes tools to help users
manage FLR automatically.
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A quota is a limit placed on the number of allocated disk blocks and/or files that a user/group/tree
can have on a production file system (PFS). In other words, quotas provide a way of controlling the
amount of disk space and the number of files that a user/group/tree can consume. Quotas can be
managed via the VNX Control Station (CLI or GUI) or via Windows.
Limiting usage
is
not
the
only
application
of
quotas.
The
quota
tracking
capability
can
also
just
track
and report usage.
There are three types of implementation choices. They are hard quota, soft quota, and tracking.
Hard quota: Denies space on disk and generates an error when the quota is reached.
Soft quota: Offers a grace period before starting to deny space on disk.
Tracking: Disk usage is tracked, but no limits are imposed.
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VNX storage systems support an optional FAST Cache consisting of a storage pool of Flash disks
configured to function as FAST Cache. This cache provides low latency and high I/O performance
without requiring a large number of Flash disks. It is also expandable while I/O to and from the
storage system is occurring. The FAST Cache is based on the locality of reference of the data set. By
promoting the data set to the FAST Cache, the storage system services any subsequent requests for
this data faster from the Flash disks that make up the FAST Cache; thus, reducing the load on the
disks in the LUNs that contain the data (the underlying disks). FAST Cache consists of one or more
pairs of mirrored disks (RAID 1) and provides both read and write caching. For reads, the FAST
Cache driver copies data off the disks being accessed into the FAST Cache. For writes, FAST Cache
effectively buffers the data waiting to be written to disk. In both cases, the workload is off ‐loaded
from slow rotating disks to the faster Flash disks in FAST Cache. The performance boost provided by
FAST Cache varies with the workload and the cache size.
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VNX FAST VP tracks data in a Pool at a granularity of 256 MB – a slice – and ranks slices according
to their level of activity and how recent that activity took place. Slices that are heavily and
frequently accessed are moved to the highest tier of storage, typically Flash drives, while the data
that is accessed least are moved to lower performing, but higher capacity storage – typically NL‐
SAS drives.
This
sub
‐LUN
granularity
makes
the
process
more
efficient,
and
enhances
the
benefit
achieved from the addition of Flash drives.
The ranking process is automatic, and requires no user intervention. Relocation of slices occurs
according to a schedule which is user‐configurable, but which defaults to a daily relocation. Users
can also start a manual relocation if desired.
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This lesson covers the VNX local protection features that are used for protecting and repurposing
data. It includes an overview of VNX SnapSure (File), VNX Snapshot (Block), VNX SnapView (Block),
and RecoverPoint/SE CDP.
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VNX SnapSure is a Local Protection Suite software package that creates a point‐in‐time view of a
file system. Also SnapSure creates a checkpoint “file system” that is not a copy or a mirror image of
the original file system. Rather, the checkpoint “file system” is a view of what the production file
system looked like at a particular time.
VNX SnapSure saves
disk
space
and
time
by
allowing
multiple
snapshot
versions
of
a VNX
file
system. These logical views are called snapshots. SnapSure snapshots can be read‐only or
read/write.
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VNX Snapshot is a Local Protection Suite software package that improve the SnapView Snapshot
capabilities by better integrating with pools. VNX Snapshots is a point‐in‐time copy of a source LUN
using redirect on first write methodology.
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VNX SnapView is a software product that run on the VNX. SnapView creates block‐based logical
point‐in‐time views of production information using snapshots and point‐in‐time copies using
clones. Snapshots use only a fraction of the original disk space, while clones require the same
amount of disk space as the source. SnapView allows multiple business processes to have
concurrent, parallel access to information.
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RecoverPoint allows users to recover applications using DVR‐like rollback to any point in time
without impact to the production application or to ongoing protection. RecoverPoint CDP is a
continuous synchronous product that mirrors SAN volumes in real time between one or more
arrays at a local site. RecoverPoint CDP maintains a history journal of all changes that can be used
to roll back the mirrors to any point in time.
RecoverPoint/SE is appliance‐based, which enables it to better support large amounts of
information stored across a heterogeneous server and storage environment.
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This lesson covers the VNX remote protection features that are used to protect data from localized
failures, outages, and disasters. It includes an overview of SAN Copy, VNX MirrorView (Block), VNX
Replicator (File), and RecoverPoint/SE CRR.
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SAN Copy allows fast bulk transfer of data between EMC VNX storage systems, or between VNX
and CLARiiON or Symmetrix systems (other vendor systems are not discussed here). The (full
mode) SAN Copy Source LUN is likely to be a point in time copy because of the way SAN Copy
functions when full data copies are used. If Incremental mode is used, then the source LUN may be
the production LUN, and can be online.
SAN Copy requires no special software to be loaded on the peer storage systems.
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MirrorView is a storage system‐based software that provides a replication solution for FC or iSCSI
host environments. It can be implemented in a synchronous mode or an asynchronous mode
depending on RTO (Recovery Time Objective) and replication distance requirements. MirrorView
mirroring is used for Disaster Recovery.
After a disaster,
MirrorView lets
data
processing
operations
resume
with
minimal
overhead.
MirrorView enables a quick recovery by creating and maintaining a copy of the data on another
storage system.
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VNX Replicator is an IP‐based replication solution that produces a read‐only, point‐in‐time copy of
a source file system. The VNX Replicator service periodically updates this copy, making it consistent
with the production file system. Replicator uses internal checkpoints to ensure availability of the
most recent point‐in‐time copy. These internal checkpoints are based on SnapSure technology. This
read‐only replica can be used by a Data Mover in the same VNX cabinet (local replication), or an
Data Mover at a remote site (remote replication) for content distribution, backup and application
testing.
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RecoverPoint/SE CRR (Continuous Remote Replication) — is a comprehensive data protection
solution that provides bi‐directional synchronous and asynchronous replication. RecoverPoint/SE
CRR allows users to recover applications remotely to any significant point in time without impact to
the production operations.
When an
application
server
issues
a write
to
a LUN
that
is
being
protected
by
RecoverPoint,
this
write is duplicated by an array splitter running in the VNX storage processor or optionally on the
application host. The VNX array will intercept all writes to LUNs being protected by RecoverPoint,
and will send a copies to the RecoverPoint appliance. In all cases, the original write travels though
its normal path to the production LUN.
Once the appliance receives the write, redundant blocks are eliminated, the writes are sequenced
and stored with their corresponding time stamp information. The package is then compressed, and
sent across the IP network to the remote appliance. At remote site the data is uncompressed and
written to the journal volume. Once the data has been written to the journal volume, it is
distributed to the remote volumes, ensuring that write‐order sequence is preserved.
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This lesson covers the VNX additional features and functions including VPLEX – Continuous
Operations, Network Data Management (NDMP) protocol backup, EMC Common Event Enabler,
and Host Encryption.
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By leveraging VNX with VPLEX, which allows the administrator to have the exact same information
in two separate locations accessible at the same time from both locations, companies can achieve
improved levels of continuous operations, non‐disruptive migrations/technology refresh, and
higher availability of their infrastructure.
VPLEX with
VNX
transparently
relocates
data
and
applications
over
distance,
protects
the
data
center against disaster, and enables efficient data mobility between sites. VPLEX allows load
balancing across two VNX arrays. Extend local VMware functionality beyond a single VNX array and
extend Oracle RAC and other clusters over distance (VPLEX is the only solution certified by VMware
and Oracle.) VPLEX allows to organizations deliver on an active/active VNX data access strategy
over distance.
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VNX supports NDMP (Network Data Management Protocol) which is an industry‐standard TCP/IP‐
based protocol specifically designed for backup in a NAS environment. NDMP allows an
administrator to control the backup and recovery of an NDMP server through a network backup
application, without installing third‐party software on the server. It communicates with several
elements in the backup environment (NAS head, backup devices, backup server, etc.) for data
transfer and enables vendors to use a common protocol for the backup architecture. Data can be
backed up using NDMP regardless of the operating system or platform.
On VNX, the Data Mover functions as the NDMP server. NDMP separates the control and data
transfer components of a backup or restore operation. The actual backups are handled by the Data
Mover, which minimizes network traffic.
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CEE (Common Event Enabler) is a capability available to VNX for File that provides an integration
point between best of breed third party storage management application tools and VNX for File
(NAS). In essence, CEE provides an alerting facility such that third party applications can take
actions against NAS client activities on the VNX.
EMC VNX
Antivirus
Agent
provides
an
Antivirus
solution
to
clients
using
a VNX
system.
It
uses
an
industry‐standard CIFS protocol in a Microsoft Windows Server domain as well as supporting
Windows clients. The Antivirus agent uses third‐party antivirus software to identify and eliminate
known viruses before they infect files on the storage system.
The EMC Common Event Enabler (CEE) was formerly know as VNX Event Enabler (VEE).
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VNX Host Encryption provides data encryption at the storage‐device level to protect data from
unauthorized access or from the removal of a disk drive or array from a secured environment. It
makes use of PowerPath Encryption technology and leverages RSA Key Manager to centrally
manage and automate encryption keys. PowerPath Encryption is a host‐based data‐at‐rest
encryption
that
utilizes
PowerPath and
RSA
Key
Manager
for
the
Datacenter
to
protect
customers against unauthorized access or inadvertent loss of unprotected information.
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This module covered the VNX features, capabilities, and software suites and packs.
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This module provides an overview of basic VNX management options and list the peripheral
products associated with VNX.
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This lesson covers VNX management Suite offerings. Additionally, it also covers EMC
ProSphere, which is cloud management software to manage VNX in virtual and cloud
environments.
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EMC Unisphere provides a flexible, integrated experience for managing VNX storage systems.
Unisphere’s wizards help the user to provision and manage the storage while automatically
implementing best practices for the configuration.
Unisphere is completely web‐enabled for remote management of the storage environment.
Unisphere Management
Server
runs
on
the
SPs
and
the
Control
Station.
Administrative users must authenticate to the VNX when using Unisphere. The VNX provides
flexible options for administrative user accounts. For deployments where the VNX will be
administered by multiple people, the VNX offers the ability for creating multiple unique
administrative accounts. Different administrative roles can be defined for the user accounts to
distribute different administrative tasks for the users.
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Administration of the VNX system can also be performed with a command line interface (CLI).
Administrative users must authenticate to the VNX when using CLI interface as well. Block enabled
systems have a host‐based Secure CLI software option available for block administrative tasks. The
CLI can be used to automate management functions through shell scripts and batch files. The
Navisphere Secure CLI is a client application that allows simple operations on the EMC VNX Series
platform and some other legacy storage systems.
File enabled VNX systems use a command line interface to the Control Station for file
administrative tasks. If VNX for File or Unified is present, then it can be connected to it via serial or
SSH to troubleshoot many VNX for File hardware components.
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Unisphere Remote is software that provides centralized multi‐box monitoring of hundreds of VNX
systems whether they reside in a data center or are deployed in remote and branch offices. It gives
users the ability to monitor the health and alerts of large numbers of VNX systems from a central
console. Unisphere Remote is a virtual appliance that runs in a VMware virtual environment.
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Unisphere Analyzer is the VNX performance analysis tool. Unisphere Analyzer is an application to
help identify bottlenecks and hotspots in VNX storage systems, and enable users to evaluate and
fine‐tune the performance of their VNX system.
Data may be collected by the storage system, or by a Windows host, running the appropriate
software, in
the
environment.
Different
performance
metrics
are
collected
from
disks,
Storage
Processors, LUNs, cache, and SnapView snapshot sessions. Data may be displayed in real‐time, or
for later analysis, saved as a .nar (Unisphere Archive) file.
For File based detailed monitoring, users have access to the native monitoring capability of
Unisphere for File and additional monitoring is available for the VNX for File components in the
separately licensed Data Protection Advisor for File Server offering that provides detailed reporting
not only on replication configurations but VNX for File in general.
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Unisphere Quality of Service Manager (UQM) measures, monitors, and controls application
performance on the VNX storage system. UQM can be a powerful tool for evaluating the storage
system to determine the current service levels and to provide guidance on what service levels are
possible, given the specific environment.
UQM may
be
managed
by
Unisphere
GUI,
Secure
CLI,
or
Unisphere
Client.
Because UQM is array resident, there is no host component to load, and no performance impact on
the host.
UQM controls array performance by allocating resources to user‐defined classes of I/O. This
resource allocation allows the specified I/O classes to meet pre‐defined performance goals.
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VNX Monitoring and Reporting is a cost effective software solution. Accessible from a web portal
it has a tree view format that drills down into several summary or filtered views. VNX Monitoring
and Reporting is a limited version of Watch4Net for VNX. It provides basic monitoring and reporting
capabilities for VNX administrators. VNX Monitoring and Reporting automatically collects block and
file storage statistics along with configuration data, and stores them into a database that can be
viewed from dashboards and reports. Watch4Net offers a custom report development framework
extending the preconfigured VNX reports and creates new reports to meet specific reporting needs.
It provides real‐time, historical and projected visibility into network, data center, storage and cloud
infrastructure performance. Users who have more complex environments, or more complex needs,
can use Watch4net or upgrade to Watch4net.
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EMC ProSphere is cloud storage management software designed to monitor and analyze storage
services across the virtual infrastructure. ProSphere can collect resource and performance data for
EMC Symmetrix, VNX and CLARiiON storage arrays.
ProSphere's federated architecture aggregates information across sites to simplify the management
between data
centers
from
a single
console.
ProSphere
is
managed
from
a web
browser
to
allow
easy access over the Internet for remote management.
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This lesson covers the integration between the automation tools for virtualized and application
environment and VNX management.
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EMC AppSync protects virtualized Microsoft applications in EMC VNX (block) environments. It is
designed to provide better management of protection and replication for critical applications and
databases. EMC’s advanced technology – snapshots and continuous data protection – enable
instant, granular restores and zero data loss replication and can be managed from a central location
using EMC AppSync.
Replication Manager is a tool designed to automate the creation, management, and use of EMC
point‐in‐time replicas (snapshots, clones, mirrors). No scripting is required. Replication Manager
auto‐discovers the environment (application host, associated storage, and underlying replication
technology) and enables easy point‐and‐click management by integrating the technology stack
from the application to the storage and replicas.
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EMC Storage Integrator (ESI) for Windows is a tool targeted at Windows and Microsoft
applications administrators. ESI for Windows provides storage viewing and provisioning capabilities.
ESI also enables the user to create a file share and mount that file share as a network attached
drive in the Windows environment.
ESI supports
the
EMC
VNX
series,
the
EMC
VNXe series,
EMC
CLARiiON,
the
EMC
Symmetrix VMAX
and the EMC Symmetrix VMAXe.
ESI supports Hyper‐v virtual disks in release 1.3.
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VMware vSphere Storage APIs (Application Programming Interface) Array Integration (VAAI) is a
storage integration feature that increases virtual machine scalability. VAAI consists of a set of APIs
that allows vSphere to offload specific host operations to EMC storage arrays. These are supported
with VMFS (Virtual Machine File System) and RDM (Raw Device Mapping) volumes.
VAAI for
SAN enables
very
tight
integration
between
the
VNX
platform
and
VMware
vSphere.
VAAI
for NAS minimizes the impact of high I/O virtualization tasks on ESXi hosts.
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Storage Analytics for VNX is a standalone software product that comprises of a light version of
VMware vCenter Operations Manager Enterprise tool and the EMC Adapter for VNX.
VMware vCenter Operations Manager provides automated operations management using patented
analytics and an integrated approach to performance, capacity and configuration management. The
EMC Adapter
for
VNX
is
bundled
with
a connector
that
enables
vCenter Operations
Manager
to
collect performance and capacity metrics, and proactive information to help administrators make
informed decisions, heat maps etc.
Virtual Storage Integrator (VSI) is a plug‐in to the VMware vCenter management software. It
allows the VMware administrator to provision, monitor, and manage VMware vSphere datastores
on EMC storage arrays directly from vCenter, simplifying management of the virtualized
environment. VSI empowers VM administrators to view storage and VMware performance metrics
from a single view.
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VMware vCenter Site Recovery Manager (SRM) automates VMware site failover. It is integrated
with vCenter and EMC Storage Arrays and managed through a vCenter client plug‐in.
SRM leverages the data replication capabilities of the underlying storage system through an
interface called a Storage Replication Adapter (SRA). SRM supports SRAs for VNX Replicator, VNX
MirrorView, and
EMC
RecoverPoint.
Each EMC SRA is a software package that enables SRM to implement disaster recovery for virtual
machines by using VNX storage arrays that run replication software. SRA‐specific scripts support
array discovery, replicated LUN discovery, test failover‐failback, and actual failover. Disaster
recovery plan provides the interface to define failover policies for virtual machines running on NFS,
VMFS, and RDM storage.
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This module covered the native VNX management options, the additional options for managing
VNX and the peripheral products associated with VNX.
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