FlashSystem A9000 / A9000R R12.2 Technical Update · Agile integration IBM Hyper-Scale Mobility...

© Copyright IBM Corporation 2017.

FlashSystem A9000 / A9000R R12.2

Technical Update

Craig Gordon, Lisa Martinez, Brian Sherman – IBM Storage ATS - Washington Systems Center

Steve Solewin – IBM Corporate Solutions Architect

Washington Systems Center - Storage


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Recent Webinars:Nov 30th LTO8 Drive and related updates to IBM tape products

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2

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Agenda

• Overview of what’s new with R12.2

• Container support and scalability enhancements

• FlashSystem Hardware enhancements

• Cross generation replication update

• HyperScale Mobility update

• HyperSwap Update

• HyperScale Manager R5.3 enhancements

• Additional functions

3



FlashSystem A9000 / A9000R R12.2 –

Overview of what’s new

4



IBM Systems Flash Storage Offerings Portfolio

Elastic Storage

ServerDS888xF

Business Critical

• Extreme performance

• Targeting database acceleration

& Spectrum Storage booster

FlashSystem 900 Application acceleration

IBM FlashCore™ Technology Optimized

FlashSystem A9000 FlashSystem A9000RFlashSystem V9000

Highest Performance Line of Business & MSP

Storwize V7000FStorwize V5030F

Entry Storage

VirtualizationMidrange Storage

Virtualization

SVC

• Simplified management

• Flexible consumption model

• Virtualized, enterprise-class, flash-optimized, modular storage

• Enterprise class heterogeneous data services and selectable data

reduction

• z/OS | AIX

Power HA

Power i HA

• Business critical,

deepest integration

with IBM Z / Power

• Superior

performance &

reliability

• Three-site / Four-

site replication

• DS8884F

DS8886F

DS8888F

Big Data

• Consolidates file &

object workloads

• Faster data

analysis

• Global sharing

Flexible

Converged

Infrastructure

with power of

Storwize V5030F

and Spectrum

Scale

VersaStack

• Radically simple & autonomous design

for Cloud Economics & Operations

• Capacity & performance optimized

configurations

• All-flash with full inline data reduction

• Enterprise features & reliability

Consolidate at scale

Enhanced data storage functions, economics

and flexibility with sophisticated virtualization

5



A9000 / A9000R – What’s New in R12.2

• New FlashSystem A9000 and A9000R model 425

• New 3D TLC NAND MicroLatency® modules

• Cross generation Asynchronous mirroring between XIV Gen3, A9000 and A9000R

• HyperScale Mobility new configurations

• Migrate amongst any A9000 and A9000R systems, over fibre-channel

• IBM Storage Enabler for Containers

• Increased A9000 and A9000R scalability limits

• 24K volumes and snapshots

• 1024 consistency groups for snapshots and mirrors

• 512 volumes in a consistency group

• HyperScale Manager Improvements

• Snapshot scheduler – by pool

• Filter using wildcards

• Save Preferences by user6

Dates:10/24/2017 Announcement

11/24/2017 General Availability




Container and scalability enhancements

7



IBM Storage Enabler for Containers

• Unified solution across IBM storage portfolio

• Allows IBM Storage to provide persistent storage for Docker

container environments• Communication with IBM block storage systems through IBM Spectrum

Control Base Edition (SCBE)

• SCBE creates a storage profile (for example, gold, silver or bronze) and makes it

available for Docker or Kubernetes plugins

• Orchestration using IBM Cloud Private and Kubernetes

• Following IBM block storage systems are available:

• IBM Spectrum Accelerate Family:

• IBM FlashSystem A9000 and A9000R

• IBM XIV

• IBM Spectrum Virtualize Family:

• IBM FlashSystem V9000

• IBM SAN Volume Controller

• IBM Storwize Family

• VersaStack

8

https://www.ibm.com/support/knowledgecenter/en/STWMS9



R12.2 A9000 / A9000R Scalability improvements

• Scaled-up FlashSystem A9000 and A9000R limits

• Increase in the number of volumes / snapshots

• Increased from 16K to 24K volumes and snapshots

• Increase in the number of volumes per consistency group and number of

consistency groups supported

• Number of volumes in a consistency group increased from 128 to 512

• Number of consistency groups increased from 512 to 1024 for snapshots and mirrors

9



IBM Spectrum Control Storage Insights Foundation

• Holistic management, optimization and support experience

• Anonymous collection of metadata to create a data ocean for

AI technologies to exploit

• Empowers both storage admins and IBM support to deliver

better storage outcomes

Beta Program: ibm.biz/FoundationPilot10

Dates:10/24/2017 Preview

Announcement

Beta Available

IBM Spectrum Control

Storage Insights

Foundation



Near real-time view

to IBM Support of the client

storage environment, including

performance, capacity and

health

IBM predictive analytics

mine historical

and live telemetry data for insights

Call Home+Storage InsightsMeta Data collector

Deep log

packages

are self-serve for

support

IBM

DS8000

Select

Switches

IBM

Flash

Systems

IBM

Storwize

Select

Hypervisors

Storage Insights Foundation Vision

Future

IBM Spectrum

Control

Storage Insights

11




Hardware update

12



Custom Designed Flash Media With Field Proven ArchitectureThe Right Systems for the Right Environments

• All IBM FlashSystem products share a Consistent Core Architecture

• IBM MicroLatency™ Flash Modules delivering industry leading performance

• IBM FlashCore™ Technology with IBM Enhanced 3DTLC Flash

• Consistent low latency performance with Compression always on

• Non-blocking Crossbar Switch

• Hardware Only Data Path

• Concurrent Code Load and Concurrent Maintenance

• High Availability Flash Enclosure with dual canister design

• Integrated Data Integrity Checking

• Two-Dimensional RAID

13



FS900 System Block Diagram

• Engineered for Flash

• Low latency NVM data bus

• Hardware RAID

• Fully redundant with no single point of

failure

• Data path is entirely independent of the

control path

• Full Active-Active design

• Fine Grain Grid architecture

Maximize Business Uptime

V

S

R

2-Dimensional RAID5 (10+P+S)

14

NVMe over Fabric (NVME-oF) ready



3x higher density with IBM enhanced 3D TLC MicroLatency® modules

Introducing the new IBM FlashSystem 900

• First array in the industry with custom 3D TLC flash modules

• Traditional 2D NAND has reached the physical limits of scalability

• Shrinking flash cells and more bits per cell cause lower endurance, heavy error

correction, and degraded latency

• 3D NAND flash enables greater scalability

• Increases density without compromising latency or endurance

• Stacks NAND cells vertically instead of shrinking size of each cell

• Allows increased lithography size

• Next generation FlashCore technology improves on native

flash chip endurance over 3.8x

3D TLC Flash

15

Endurance Gain = 3.8X



IBM FlashSystem 900

• 3X capacity with new IBM enhanced 3D TLC in 2U

• Inline hardware compression with no performance penalty

• Up to 220TB effective capacity for compressible workloads

• Next generation FlashCore technology

• Consistent response time; latency as low as 95 microseconds

• Enhanced user interface with new dashboard view

• Centralized encryption key management; SKLM

• 7-year flash wear guarantee

Flash without compromise

3.6TB 8.5TB 18TB

Qty 6 8 10 12 8 10 12 8 10 12

Usable 14.4 21.6 28.8 36.1 51.3 68.4 85.5 108 144 180

Maximum Effective 44 66 88 110 132 176 220 132 176 220

16



FlashSystem 900 Technical Foundation

17

FlashSystem 900 R2 FlashSystem 900 R3

Flash media MLC 3D TLC

Capacity points 13 10

Minimum Usable Capacity (TB) 2.2 14.4 (3D TLC)

Maximum Effective Capacity (TB) 57 220

Native compression No Yes

RAID RAID 5 + Hot spare RAID 5 + Hot Spare

Latency: write 90µs 95µs

Latency: read 155µs 155µs

IOPS: read (100%, random) 1,100,000 1,100,000

IOPS: read/write (70%/30%, random) 800,000 900,000

IOPS: write (100%, random) 600,000 600,000

Bandwidth: read (100%, sequential) 10 GB/s 10 GB/s

Bandwidth: write (100%, sequential) 4.5 GB/s 4.5 GB/s

Encryption Local key management Local key management, SKLM

Interfaces 18 x 16Gb FC

6 x 8Gb FC

8 x 40Gb QDR InfiniBand

18 x 16Gb FC

6 x 8Gb FC

8 x 40Gb QDR InfiniBand

Remote support No Yes

Warranty 1 year or 3 year 1 year or 3 year17



Industry Standard Interface Technology

Powered by

IBM FlashCore™ Technology

IBM FlashCore™ TechnologyThe DNA of the FS900/V9000/A9000 family

Engineered for Flash

• Hardware RAID

• Hardware inline compression

• Non-blocking Crossbar Switch

• Hardware Only Data Path

• Single Box Highly Available Architecture

• Concurrent Code Load & Maintenance

IBM Engineered

• Massively Parallel Design

• FPGAs in the Data Path

• Distributed RAM

• High Speed Interface

• Line Speed Data at Rest Encryption

• IBM Variable Stripe RAID™

• IBM Engineered ECC

• IBM Optimized Overprovisioning

• Health Binning and Heat Segregation

• Write Buffer and Hardware Offload

• IBM Optimized Garbage Collection

IBM MicroLatency Module™

Hardware Accelerated I/O

Advanced Flash Management

Industry Standard

Chip Technology

IBM Enhanced

Micron Technology

Forget about it Endurance

Consistent predictable performance for life

18



IBM MicroLatency™ Module Key Differentiators

Results:

•Large endurance gains w/o latency

penalty

•Asymmetrical wear leveling results

in higher endurance in real life

workloads!

•As the part ages and we determine

the health of each block, the ideal

voltage levels are set in order to

minimize errors!

•Outstanding data reliability and

improved endurance

•Consistent low latency performance!

• Built in, always on hardware based compression

• No added latency

• Innovative ECC algorithm corrects very high bit error rates (does not require additional reads)

• Latency does not degrade as parts age

• Health binning and heat segregation

• FlashCore technology continually assesses health by monitoring several key parameters

• Hotter data placed in healthier blocks –Up to 57% improvement in endurance!

• Write Amplification reduced by up to 45% by grouping like heat levels

• The IBM and Micron collaboration provides special access to the Flash

• Extensive characterization determined optimal read offsets to set as block ages

• Powerful checks on entire data path, including inside the flash modules

• Variable Stripe RAID delivers two dimensions of data protection

https://www.youtube.com/watch?v=TkUsBjXHf9E 19

https://www.youtube.com/watch?v=TkUsBjXHf9E



FlashSystem A9000 and FlashSystem A9000R

FlashSystem A9000

• 8U, complete offering

• IBM Installation, service and support

• Ideal building blocks for service providers

• 110TB – 900TB effective capacity*

• Up to 900K IOPs

• 250µs minimum latency

FlashSystem A9000R

• Pre-integrated 42U rack offering

• IBM Installation, service and support

• Scale-out grid architecture

• Ideal for larger enterprise

environments

• 360TB – 3.6PB effective capacity*

• Up to 2.4M IOPs

• 250μs minimum latency

20*Note: Effective Capacity assumes 5:1 Data Reduction ratio



IBM FlashSystem A9000

A9000 and FS900 R3 – Truly Capacity and Cost OptimizedIBM FlashSystem™ A9000 and IBM FlashSystem™ A9000R

21

• 8U with cable bundle and fully self contained

• All Grid controllers and the single flash drawer interconnected with InfiniBand (IB)

• A9000/R exploits FS900 hardware compression for metadata

• A9000 Grid Controller exactly the same as the A9000R grid controller

• 384GB DRAM

• Same Processor complex as A9000R

• Next Generation X86 processors to further improve performance

• The FS900 drawer adds 3D TLC!

• Usable capacities increase to 22TB, 36TB, 85TB and 180TB



Capacity

Optimized

MicroLatency Module usable capacity

IOPS results represent random IO, 80/20% read/write

* Capacity information is Effective, assuming 5:1 data reduction

Accelerate line-of-business workloads

✓ Accommodate fast-growth of data-intensive applications

✓ Support real-time data-driven business decisions

✓ 3X Capacity increase

✓ 66% Power and space reduction

✓ Cost-competitive with Hybrid Arrays

Performance

Optimized

900K IOPS

110TB*

3.6TB (X8)

Balanced

900K IOPS

900K IOPS

180TB*

425TB*

3.6TB 8.5TB

900TB

18TB

900K IOPS

900TB*

FlashSystem A9000 Model 425 Configurations

22



IBM FlashSystem A9000R

A9000R integrated with FS900 R3!IBM FlashSystem™ A9000 and IBM FlashSystem™ A9000R

• A9000R interconnect to FS900 is unchanged

• RDMA over InfiniBand

• A9000/R exploits FS900 hardware compression for metadata

• Next Generation X86 processors to further improve performance

• A9000 and A9000R have same high performance grid controllers

• The FS900 drawer adds 3D TLC!

• Usable capacities increase to 36TB, 85TB and 180TB

• A9000R scales from 2 to 4 grid elements

• Grid element consists of 2 grid controllers and one FS900 storage enclosure

23



MicroLatency Module usable capacity

Number of Grid-Elements 3 42

Performance

Optimized

360TB*

720TB*

540TB*

2.4M IOPS

1.8M IOPS

1.2M IOPS

3.6TB

Balanced

1.7PB*

850TB*

1.28PB*

2.4M IOPS

1.8M IOPS

1.2M IOPS

8.5TB

Capacity

Optimized

3.6PB*

2.7PB*

1.8PB*

2.4M IOPS

1.8M IOPS

1.2M IOPS

18TB

Consolidate with Confidence

✓ Leverage declining cost of flash media

✓ Dramatically reduce footprint vs HDD storage

✓ Dramatically reduce power consumption

✓ Dramatically improve data center utilization

IOPS results represent random IO, 80/20% read/write

* Capacity information is Effective, assuming 5:1 data reduction

FlashSystem A9000R Model 425 Configurations

24



Lenovo M5 Server

Same Server for A9000 / A9000R

• Dual socket Xeon Processor E5-2650 v4 12C 2.2GHz 30MB 2400MHz (Broadwell)

• 384GB RAM - 8 x 32GB 8 x 16GB DDR4 Memory 2400MHz LP RDIMM

• 2 x HDD (600GB) , 2 x SSD (400GB)

• Internal battery solution – BBU Kit

A9000 / A9000R Building blocks: Server

25



.

Server PCIe slots configuration

• Two configurations (Host connection) • iSCSI over 10GE - Based on MLX ConnectX-3 Pro

• FC – Based on Qlogic QLE2662

• InfiniBand (IB) Interconnect – Based on MLX Connect-IB• Server to Server and Server to Flash

• Compression card – Coleto Creek

AC750w

DC

AC

2

1

ATTENTIONPower supply filler is

required for system coolingRemove only when

installing 2 nd power supply

1PCI

2PCI

3PCI

6PCI

7PCI

8PCI

AC

DC

AC

750wIB

IB

FC

FC

10GE

Compression Card

Compression Card

AC750w

DC

AC

2

1




1PCI

2PCI

3PCI

6PCI

7PCI

8PCI

AC

DC

AC

750wIB

IB

10GE

Compression Card

Compression Card 10GE

Fiber channel

iSCSI over 10GE configuration

AC750w

DC

AC

2

1




1PC I

2PC I

3PC I

6PC I

7PC I

8PC I

AC

DC

AC

IB

FC

FC

10GE

Compression Card

Compression Card

A9000 A9000R

A9000 A9000R

AC750w

DC

AC

2

1




1PC I

2PC I

3PC I

6PC I

7PC I

8PC I

AC

DC

AC

IB

10GE

Compression Card

Compression Card 10GE

26



FlashSystem A9000/A9000R model 425 Host Port Connections

Host Port Connections *

Option 1

Host Port Connections *

Option 2

A9000 12x16Gb FC + 6x10Gb iSCSI 12 x 10Gb iSCSI

A9000R with 2 Grid Elements 16x16Gb FC + 8x10Gb iSCSI 16 x 10Gb iSCSI



* Host port connections must be identically configured (100% Option 1 or 100% Option 2) in each of the grid controllers

27



FlashSystem A9000 and A9000RChoice of financial and licensing models

* Storage Utility Offering for A9000/A9000R model 425 available initially via RPQ with standard support planned for 1Q/18

✓ Reuse: Transferable

Available as VersaStack integrated offering

✓ Consume: Storage Utility Offering*

✓ Own: Perpetual license

28

Baseline subscription



Performance Updates (by version – software update only!)

29

1.25 GB/s

2.3 GB/s3 GB/s 3.25 GB/s

12.0 12.0.3 12.1 12.2

Read Bandwidth Per Module GB/s

Maximum IOPS Per Module - Read Hit 4K

0.27 MIOPS0.33 MIOPS 0.37 MIOPS

0.50 MIOPS

12.0 12.0.3 12.1 12.2



0.2 ms 0.2 ms0.3 ms

0.3 ms 0.3 ms

0.4 ms

0.7 ms

0.20

0.30

0.40

0.50

0.60

0.70

0.80

0.90

1.00

1.10

307,000 615,500 923,000 1,230,000 1,538,000 1,846,363 2,154,000

Response Time (ms) / Throughput (IOPS) Curve

A9000R

2 MIOPS @ 0.5 ms

A9000R TPC-C Oracle OLTP (70/30/80 8K)




Cross gen Replication

31



Cross-generation Asynchronous mirroring

• Asynchronous mirror between A9000/A9000R and XIV Gen3

• Supported versions:

• XIV Gen3: 11.6.2.a only

• A9000/R: 12.2.0 and above

• Bi-directional mirror is supported

• FC or iSCSI

• XIV Gen3 - only uncompressed volumes can be mirrored with A9000

• All Async mirror functionality is supported: change role, switch role, mirrored snapshots, etc.

• No change in XCLI

32

Asynchronous mirror



Cross-gen Async mirror – relevant limitations

• Limitations always according to the more strict limit (Gen3)

• Volume sizes:

• Max volume size that can be mirrored cross-gen: 161TiB (Gen3 limit)

• The volume size in blocks must be identical. Rounding up rules may be different and result in different

volume size in GB, but that does not matter

• Max CG size: 512 volumes

• Cross-generation limited to 128 volumes per CG due to XIV limit

• Max mirrors: 512 (XIV limit)

• Max targets 10

• Min interval – 1 minute with HSM, 30 seconds with xcli

• Min RPO – 2 minutes with HSM, 60s with xcli

• Interval must be less than the RPO

33




HyperScale Mobility

34


Simplify management with non-disruptive data mobility Agile integration

IBM Hyper-Scale Mobility enables

seamless data migration across

FlashSystem A9000 / A9000R systems:

• Maximize utilization across systems

• Simplify data movement with an

automated, non-disruptive process

• Eliminate interruptions to host

applications

• Balance workloads without downtime for

better performance11101010101

10101001101

111

0110101

111

0110101

HOSTAutomatically redirects

to the new location

35




HyperSwap

36



HyperSwap – Continuous Availability solution for A9000 & A9000R

• IBM has long understood the critical requirement to always have access

to data and first introduced HyperSwap technology on IBM Storage for

IBM Z in 2002

• Data is replicated between two systems using sync mirror technology

• Volume exists on both systems simultaneously

• The hosts connect to a HyperSwap volume through both systems in an

active-active configuration

• Asymmetric Logical Unit Access (ALUA) utilized to optimize paths between host and storage

• Hosts I/O is maintained through failures by high-availability logic using a

third site Quorum Witness (QW)

• Existing sync relationships can be converted to HyperSwap and vice

versa

• If the host experiences a planned or unplanned failover, there is a change

in the state of its paths with no impact to applications and no manual

intervention

Site C

Quorum

Witness

Data center A

Primary

Host A

Data center B

Secondary

37



FlashSystem A9000 / A9000R R12.2 – HyperScale Manager

IBM Hyper-Scale

Manager

38



Hyper-Scale Manager 5.3 – What’s New Summary

• Support for the 425 model

• Snapshot Scheduler (defined at a pool boundary)

• Flexible Layout

• Saving user preferences

• Improved Host Awareness

• Filtering with wildcards: “ * “ and “ , “

• Management server updates

• Latency

• Restart

• Perform actions on a mass of volumes

• i.e. Activate mirror

• Create a host cluster on multiple systems

39



HSM R5.3 - Snapshot Scheduler

41



HSM R5.3 – Flexible Layout – Save user preferences

42



HSM R5.3 – Filter using Wildcards

43

➢ Smart Filtering:

▪ Search anything in your environment in seconds by any parameter or

condition

▪ Use smart filtering for policy control to find non-valid objects by

searching

▪ Additional wildcard filtering using * or OR/,



HSM R5.3 - Improved Host Awareness Experience

44



HSM R5.3 - Improved Host Awareness Experience

45



FlashSystem A9000 / A9000R –

Additional functionality

46



A9000/A9000R Data Reduction Processing (Host Write)

Removal64KB

Host Write8KB8KB8KB8KB8KB8KB8KB8KB

Known patterns

Pattern

Matching

8KB8KB8KB8KB

8KB

8KB

Match found

Dedupe

8KB

8KB

8KB

8KB

Duplicate found Compression

• 8KB pattern detection

• Deduplication

• Compression

47



REST API IBM Spectrum Control Base

CLI

OpenStack Cinder

VMware, Microsoft and Container integration

Python Library

Cloud Storage Management with IBM A9000/A9000R - orchestration made easy

48



Monitor A9000/R health with vRealize Operations

Easily automate A9000/R operations with

vRealize Orchestrator

&

vRealize Automation

Provide A9000/R Visibility & Self service provisioning

to vCenter administrators with

vSphere

vCenter Web Client Plugin

Enable A9000/R Storage Policy Based Management

(SPBM) & Virtual Volumes (VVOL’s) with vSphere VASA

Orchestrate A9000/R & ESXi hosts Disaster Recovery with vSphere Site Recovery Manager

Leverage A9000/R performance efficiencies

to increase ESXi VMFS scalability, withvSphere VAAI

Backup vSphere virtual machines on A9000/R with IBM Spectrum Protect Plus

End-to-End A9000/R solutions for

49



Monitor A9000/R health with

Enable A9000/R self-service provisioning

for System Center Virtual Machine Manager

administrators

Orchestrate A9000/R & Hyper-V

hosts Disaster Recovery

Azure Site Recovery

Backup Hyper-V virtual machines on

A9000/R withIBM Spectrum Protect Plus

A9000/R solutions for

Azure

Site Recovery

50



FlashSystem A9000/R Data-at-rest Encryption

MicroLatency™:

Hardware-based

data at rest encryption

A9000 and A9000R

Industry standard AES-XTS 256

Encryption

Hot encryption activation and

re-keying

Key management

• External key management

• IBM Security Key Lifecycle

Manager (SKLM)

• Safenet KeySecure

• Thales

• Other KMIP compliant

solutions via RPQ

• Internal key management

http://www.redbooks.ibm.com/redpapers/pdfs/redp5402.pdf 51

http://www.redbooks.ibm.com/redpapers/pdfs/redp5402.pdf



Protecting data in the cloud with Multi-Tenancy

• Multi-tenancy restricts the objects the user can access

• Provide the ability to serve multiple clients/organizations (tenants) in a

single system

• Each tenant’s storage admin can manage their allocated storage

without knowing (or caring) about others

• A Domain is a subset of the system’s resources

• Users, pools, hosts and clusters

• Restricts the resources a user can manage

• No visibility between domains

• Two storage administrator types

• Global Admin (access to the entire box and creates domains)

• Domain Admin (associated with one or more domains, access to

resources only within the domain(s))

• Use in conjunction with Quality of Service as required

52



Performance Management with Quality of Service (QoS)

• Optional – to ensure performance for critical applications by limiting performance of lower priority hosts or applications (e.g. Test/Dev) accessing the same A9000/A9000R/XIV system

• Performance class limiting IOPs, MBs or both is created

• Type of classes:

• Hosts

• Pools/Domains

• Volumes

• Maximum IOPs/BW for class can be independent or shared

• Objects outside performance classes are not limited by QoS

• Immediate, dynamic changes

• Movement into/out of a performance class

• Maximum IOPs and/or BW specifications for performance class

• An I/O is limited by the maximum limit

53



Software Defined method of deploying a Storage Infrastructure

• Field proven enterprise storage software

• Repurpose x86 infrastructure at will

• Co-locate compute and storage for a converged solution

• Scale-out private Cloud with full enterprise storage capability

CVD available for A9000 in a VersaStack Converged Infrastructure

FlashSystem V9000Storwize V7000FStorwize V5030F

Entry Midrange Enterprise

SVC

Virtualizing the DC

FlashSystem A9000

Cloud service

providers

All-Flash Converged Infrastructure: VersaStack

www.ibm.com/versastack

www.cisco.com/go/versastack

http://www.cisco.com/c/en/us/solutions/data-center-virtualization/versastack-solution-cisco-ibm/index.html#~cvds

54

http://www.ibm.com/versastack

http://www.cisco.com/go/versastack

http://www.cisco.com/c/en/us/solutions/data-center-virtualization/versastack-solution-cisco-ibm/index.html#~cvds



Tier 1 GuaranteeIBM FlashSystem A9000 and IBM FlashSystem A9000R

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