L'offre high End Stockage IBM€¦ · L’offre High End Stockage IBM Philippe Riou...

L’offre High End Stockage IBM

Philippe Riou

[email protected]

© 2011 IBM Corporation

Journée Technologique STG IBM – Bois Colombes, 13 Janvier 2011

Agenda

� IBM disk Portfolio

� DS8700 – Introduction– Technology Overview– Detailed features– New Features and improvements– Raw performance – Easy Tiering– Metro Global Mirror Function

� DS8800 description



IBM Disk Portfolio 1Q2011

N seriesFor clients requiring:� NAS storage� Simple two-site high availability

SVC, Easy Tier, ProtecTIER, Information Archive, Storwize AppliancesFor clients requiring optimization of storage costs:� Storage technologies that add function, performance, ease of use, or efficiency to new or existing storage

Storage Optimizers

DS3000For clients requiring:� SMBs or branch office locations; cost sensitive; start at as small as

100s GB, up to low TB capacity

Entry

Storwize V7000For clients requiring:� 10s of TB of rack-mounted

storage with sophisticated software functions

� Breakthrough ease of use and management

� Non-disruptive migration from, or virtualization of, existing disk

DS5000For clients requiring:� Good cost/performance,

general-purpose storage� Need to add capacity to

existing configuration� 10s of TB of capacity

Midrange

SONASFor clients requiring:� Massive I/O, backup, or

restores � Consolidation, or scale large

numbers of clusters

XIVFor clients requiring:� Breakthrough ease of use and

management� High utilization with automated

performance (“hot spot”) management

� Virtually unlimited snapshots� Advanced self-healing

architecture

DS8000For clients requiring:� Advanced disaster recovery

with 3-way mirroring and System z GDPS support

� Continuous availability, no downtime for upgrades

� Best-in-class response time for OLTP or transaction workloads, flash optimization

� Single system capacity scalable to the PB range

Enterprise

FileBlock

Optimized for ‘open systems’ Optimized for z/OS and IBM i


IBM®

System Storage®

DS8700Introduction



Binary Compatibility

2004-6 2007-9

POWER5 POWER6POWER PC / POWER

1999-4

130 nm 90 nm 65 nm

L2 Cache

4.7GHz

AdvancedSystem Features

Distributed Switch

180 nm 130 nm

1.9GHzCore

Distributed Switch

Shared L2

1.5+GHzCore Shared L2

2.2GHzCore

Distribued Switch

2.2GHzCore

1.5 GHzCore

Distributed Switch

Shared L2

1.5 GHzCore

DS8000

DS8000 Turbo

DS8000

DS8000 TurboESS (Shark)ESS (Shark)

The IBM POWER processor has been behind the success of IBM enterprise storage beginning with the Enterprise Storage Server in 1999

Benefit: a steady, 10-year lineage of RAS improvements!

IBM POWER and DS8000 evolution

DS8700DS8700

FUTURE

POWER xxx

DS8XXXDS8XXX



Why Move to DS8700

� Performance– Up to over 150% performance boost with new IBM POWER6-based controllers – New, faster PCI Express (PCI-E) internal fabric enables much higher performance and

scalability– Almost 70% faster ASIC on the device adapters– Increased FlashCopy performance in every metric– Increased SSD performance on sequential reads

� Availability– Single model, scalable via concurrent upgrade of all components– Shorter service windows with faster concurrent microcode updates– Better than 99.999% availability

Introducing the DS8700 (1/2)



Why Move to DS8700 (2/2)

� Investment Protection and Scalability– DS8700 architecture allows for future expansion of additional controllers and future 8Gb

Host Adapters– SSD optimization and M/GM Multiple Session announced

� Management– Simplified management and application-aware FlashCopy

� Security– Full Disk Encryption enhancements address PCI-DSS compliance

Introducing the New DS8700 (2/2)



DS8700 Hardware Overview

� 2-Way (Model 941)– Two dual processor servers (POWER6)

•Up to 128GB Cache (32, 64 or 128 GB)– 8 to 64 2Gb/4Gb FC/FICON (4 ports adapters)– 16 to 128 Disks– Physical capacity from 2,2TB up to 128 TB

� 4-Way (Model 941)– Two four processor servers (POWER6)

•Up to 384GB Cache (32, 64, 128, 256 or 384 GB)– 8 to 128 2Gb/4Gb FC/FICON (4 ports adapters)– 16 to 1024 Disks (with 4 expansion frames 94E)– Physical capacity from 2,2TB up to 1024 TB

� All models :– Disks :

•300 / 450 / 600 GB FC 15K rpm (Encrypted or Non Encrypted)•1 & 2 TB SATA 7200 rpm•73 / 146 GB SSD (Solid-State-Drives) (8 or 16)

– RAID 5, 6 & 10 support


IBM®

System Storage®

DS8700Technology Overview



Change in I/O structure :

� New IO Towers are directly connected to the servers via point-to-point PCI-e cables.– IO Towers no longer share common ‘loops’, they connect directly to each server

via separate cables and link cards.

� New Device Adapter pair III (to connect disks to internal servers) – Processor upgrade (500 to 750Mhz) to increase I/O performance

Change in servers :� 4.7 Ghz P6 570 CECs� Cache 32GB to 384GB� 4Gb/s FC / FICON� 2Gbs disk array

P5

P5

P5

P5

Disks

Disks

DS8300RIO I/O attach New I/O

attach

DS8700PCIe cable I/O attach

P6

P6 P6

RIO RIO

PCIe cables

P6

SAN

Changing from DS8300 to DS8700

P6 server



DS8700 – IO Fabric

� Key difference: The RIO loop in DS8700 will be isolated– Unlike DS8000, DS8700 IO towers will be on a separate point-to-point

connection– This isolates the server communication from IO fabric failures, power supply

problems, and repair procedures.

� DS8700 will use a PCI-e IO Fabric instead of PCI-x. PCI Express reduces the impact of hardware failures


IBM®

System Storage®

DS8700Detailed Features



DS8000 SARC Cache Algorithm

� SARC : Sequential Prefetching in Adaptive Replacement Cache

� Best caching algorithms in industry

� Simplified Adaptive Replacement Cache (SARC)� Self-Learning algorithms� Adaptively and dynamically learn what data should be

stored in Cache based upon the recent access and frequency needs of the Hosts

� Adaptive Replacement Cache� Most advanced and sophisticated algorithms to

determine what data in Cache is removed to accommodate newer data

� Pre-fetching� Predictive algorithm to anticipate data prior to a host

request and loads it into Cache

� Benefits� Leading performance� Been proven to improve Cache hit by up to 100% over

previous IBM caching algorithms and improve I/O response time by 25%

� More efficient use of Cache� Intelligent caching algorithm profiles Host access

patterns to determine what data is stored� Need less Cache than competitors

0

0.2

0.4

0.6

0.8

1

0 64 128 192 256

Cache Size (GB)

Cache H

it R

atio

z/OS

Open

Lower cache-to-backstore ratios

Benefits of adaptive replacement caching



DS8000 Cache Efficiency elements

Example : Two random 4KB blocks

blk1

blk2

DS8000

4KB slots

blk2

blk1HDS high-end

16KB slots

--wasted--

blk1EMC DMX-3/4

64KB slotsblk2

-----------------------------wasted-----------------------------

The more random the I/Os and the smaller the blocks,

the more cache that is wasted due to large cache slot sizes

DS8000 Utilizes Less Resources to Manage Cache

System cache is a key factor in application I/O

performance.

It is also relatively expensive and relatively small

compared to total drive capacity.

Optimizing cache use via efficient system

management allows the system to “do more with

less”.



DS8000 logical configuration and virtualisation

6+P+S 146GB 6+P+S 146GB

An array site is a collection of 8 drives of the same type spread across both internal fabrics(loops) on the DS8000

An array is formed when the drives in an array site are formed into a RAID group (RAID5/6/10) and potentially a spare is assigned

A rank is created when an array is formatted for either CKD or FB

Ranks are divided into extents which are either 1GB (FB) or 1113 cylinders (CKD)

An extent pool is a collection of ranks all of which are managed by the same DS8000 server (0/1)

Volumes are created from one or more extents from a single extent pool

A LSS/LCU is a collection of volumes and has relevance mostly for copy services and CKD



Volume allocation algorithms

The rotate volumes allocation algorithm will attempt to keep a volume on a single rank and will rotate the rank for each allocated volume among the ranks in the extent pool

The rotate extents allocation algorithm will spread a volume over all available ranks in the extent pool and will rotate the rank for each extent among the ranks in the extent pool. The starting rank for each allocated volume will also be rotated in a similar manner

Note : There is also a historical allocation method called legacy which may be present on very old DS8000s and involved allocating the volume on the rank with the most available space

Rotate extents is also referred to as Storage Pool Striping and is the recommended method for multiple rank extent pools



0

50

100

150

200

250

300

350

400

450

Before AMP With AMP

Th

rou

gh

pu

t (M

B/s

ec

)

6+P Raid-5

7+P Raid-5

DS8000: Adaptive MultiDS8000: Adaptive Multi--stream stream PrefetchingPrefetching (AMP)(AMP)

� Invented by IBM Almaden Research Lab

� Decides what, when, and how much to prefetch

� Provably optimal

� Doubles Sequential Read Bandwidth for a Single DS8000 RAID-5 Array

Specific Cache Algorithms

DS8000: Intelligent Write Caching (IWC)DS8000: Intelligent Write Caching (IWC)

�Invented by IBM Almaden Research Lab – multiple IBM patents

�Improves performance through better write cache management and better destage order of writesUp to 2X throughput for random write workloads

�Typical database workload throughput may improve 15 - 20%

�DS8000 SMP cycle usage reduced up to 12% via better data structures



DB Open Performance

70/30/50 Load

(single 8 disk arrays)

15 K RPM Disks

0

2

4

6

8

10

12

14

16

18

20

0 500 1000 1500 2000 2500 3000

Throughput (IO/sec)

Av

era

ge

Re

sp

on

se

Tim

e

(ms

)

RAID 6 – IWC

RAID 6 – no IWC

RAID 5 – IWC

RAID 5 – no IWC

RAID 10 – IWC

RAID 10 – no IWC

Intelligent Write Caching – Some Performance Results



Value proposition:

Increasing DS8000’s superior resiliency to support today’s lower-cost, less-

reliable, large-capacity drives

� RAID 6 - offers protection from double disk failures by using a second independent distributed parity scheme (dual parity)

– Can tolerate loss of data in two strips of any stride without data loss• 2 Disk Failures• 1 Disk Failure + 1 Media Error• 2 Media Errors

� Critical for larger drives (SATA/FATA), which have longer rebuild times and thus longer periods of potential exposure should two drives start failing

RAID 6 Support



RAID-6 versus other RAIDs

RAID-6 may be used with Enterprise or Near-line ATA disks

662.5% *2RAID-6, 5+P+Q

673.5%2RAID-6, 6+P+Q

250%1 or 2RAID-10, 4+4

487.5%1RAID-5, 7+P

Performance Write penalty (Disk ops)

Space efficiencyReliability (#Erasures)

* includes Spare Overhead



Leading solution : performance, and scalability for disk mirroring

Disk Mirroring solutions for ESS and DS

Metro Mirror (Synchronous PPRC)

Global Copy (Asynchronous PPRC= Extended Distance)

Global Mirror (Global Copy + automatic "goto sync" using Metro) Mirror

Metro Mirror/Global Copy ( Cascading PPRC)

Metro Mirror/Global Mirror (Cascading PPRC with automatic "goto sync")

Primary Site(PPRC primary)

Metro Mirror

Secondary Site

(PPRC secondary)

Global Copy

or

Global Mirror

FlashCopy

Global Mirror


Metro Mirror

Intermediate Site(PPRC

secondary/primary)

FlashCopy

Remote Site(with 'safety copy')

Global Copy


Intermediate Site(PPRC

secondary/primary)

FlashCopy

Remote Site(with 'safety copy')

Metro Mirror

DS8000 Disk Storage Mirroring



FlashCopy to normally provisioned volumes

Physical Space

FlashCopy FlashCopy

physical copy

physical copy

Classic FlashCopy

normally provisioned






FlashCopy to Space Efficient volumes

Physical Space

FlashCopy FlashCopy

physical copy physical copy

Space Efficient FlashCopy

space efficient

space efficient

repository volume






Standard Logical Volume (LV)

physical copy

Standard LV


physical copy


All capacity for logical volume is allocated when volume is created

Unmodified tracks still consume real capacity



One repository volumeholds all tracks for many

Track Space Efficientvolumes

Track Space Efficient LV – (FC SE)

space efficient

vitual spacenormally

provisioned

physical space

Track Space Efficient

physical copy

virtual copy

Real capacity allocated when Repository is allocated

Repository capacity not consumed until writes to TSE LV

Each track (1st time updated) generates a real track allocated in SE repository

Logical capacity is consumed as it’s allocated



Extent Space Efficient LV – (Thin provisionning)

One extent holds only tracks

for one Extent Space Efficient logical volume

An ESE LV can have multiple extents

No real capacity consumed until 1st write to source volume extent

Each new extent updated (data written) generates a real extent allocated to an ESE volume

Real capacity is consumed on each 1st

write to an extentspace

efficient

vitual spacenormally

provisioned

physical space

Extent Space Efficient

physical copy

virtual copy



FlashCopy to Metro Mirror Primary – Establish Pair

Local A

Local B

duplex

pendingfull

duplex

Local Storage Server

Remote Storage Server

Metro Mirror

FlashCopy

• FlashCopy target can also be a synchronous Metro Mirror primary volume

• After the FlashCopy command completes, the data associated with the FlashCopy will be physically copied from the Metro Mirror primary to the Metro Mirror secondary.

• During this operation, the Metro Mirror relationship will go into a “Duplex Pending” state

• HyperSwap cannot function properly during this unsynchronized state until the replication completes

Prior to Remote Mirror FlashCopy

Remote B



Remote Pair FlashCopy Simplifies High Availability

Metro Mirror

Local Storage Server

Local A

Local B

Remote Storage Server

Remote A

Remote B

full duplex

full duplex

FlashCopy

Establish

FlashCopy

Now with Remote Mirror FlashCopy

• Now a FlashCopy command is established both locally and to the Remote FlashCopy source



DS8700 Full Disk Encryption Enhancements

New enhancements address Payment Card Industry (PCI-DSS) compliance requirements with improved Secure Key management options

– DS8000 is the only enterprise disk platform with self-encrypting drives• Advanced key management is compatible with existing tape encryption solution• No performance impact compared to standard, non-encrypting drives• Transparent to existing applications and disaster recovery environments• Standards-based key management• IBM Global Human Resources has deployed DS8000 FDE

– New enhancements help clients comply with PCI-DSS requirements• Dual platform key server supports secure key requirements• Also new Encryption Deadlock Recovery Key

Advanced security for data at rest

IBM is rated in the top 5 of “Most Trusted Companies

in [Data] Privacy”*

IBM is rated in the top 5 of “Most Trusted Companies

in [Data] Privacy”*

*Ponemon Institute and TRUSTe Rank America’s Most Trusted Companies in Privacy, 9/16/09



z/OS Distributed Data Backup

System z

FDR CKD Backup app.

Multiple distributed

environments

z/OSmainframe

environment

•One single backup environmentfor mainframe data and distributed data•No Separate Backup serversNo TCP/IP Data Transfer•Removes backup server and open tape from infrastructure

MAINFRAME PRODUCTION, BACKUP AND DISTRIBUTED

BACKUP

1FDRSOS on Systems z takes

non-disruptive backup from copy of open system volumes & puts backup data to z-attached tape, disk or ProtecTIER VTL for dedup

open volumes now have two connections one for production read/write (from distributed servers) and the other for backup read/write (from z)

SCSI architecture / FCP

CKD Architecture / FICON

Mainframe and open

data

z/OSTape

TCP/IPLAN/WAN

AIX®

Windows

FBA Architecture / FICON

2FDRSOS FBA Backup app.

UPSTREAM z/OS Backup app Server

1

2

Multiple separate backup environments for

mainframe data and distributed data

Separate open systems backup servers

Data moving across TCP/IP links

Prior to z/OS Distributed Data Backup

System z

FDR CKD Backup app.


environments

z/OSmainframe

environment

PRODUCTION AND BACKUP

SCSI architecture / FCP / SAN

CKD Architecture / FICON

Mainframe data

z/OSTape

TCP/IPLAN/WAN

AIX

Microsoft®

Windows®

PRODUCTION AND BACKUP

Open dataOpenTape


backup servers

No Backup data on TCP/IP links


IBM®

System Storage®

DS8700 & code R5.0New Features & Improvements


Journée Technologique STG IBM – Bois Colombes, 13 Janvier 2011 GUI enhancements

Updated every 60sec.

Number of racks shown matches racks in the storage

unit

New System Summary Panel

– Overview tab displays system configuration

and real-time performance data for a 5 minute

sampling interval

New System Summary Panel

– Overview tab displays system configuration

and real-time performance data for a 5 minute

sampling interval

Improved and Simplified Management



� Hardware Explorer tab shows system hardware and a mapping between logical configuration objects and drives (e.g., drives belonging to an extent pool or array)

� Real images show exactly what bays are populated with what devices

� Hardware Explorer tab shows system hardware and a mapping between logical configuration objects and drives (e.g., drives belonging to an extent pool or array)

� Real images show exactly what bays are populated with what devices

R5.0R5.0

System Summary Panel – Overview Tab

GUI enhancements



� IBM Tivoli Storage FlashCopy Manager provides replication integration between enterprise applications and IBM disk systems

– Similar to NetApp Snapshot™ and NetApp SnapManager®?

FlashCopy�Create instant application copies for backup

or application testing

�Many replication options including

incremental (only changed blocks) or

space-efficient copies (“snapshots”)DS8000

FlashCopy Manager �Integrated, instant copy for critical

applications

�Virtually eliminate backup windows

�Rapidly create clones for application testing

�View inventory of application copies and

instantly restore

XIV DS3/4/5 SVC

Application-aware FlashCopyTivoli Storage FlashCopy Manager



Code Upgrade

� Concurrent Code Load Improvements :• Allow part of current code load process to be completed prior to activation of

code without any loss of access or quiescing of any resource (no loss of redundancy).

• This reduces the activation phase of the code load process time required.

• Intended to provide a less than 2 hour activation phase of the main components of the DS8000.


IBM®

System Storage®

DS8700 Raw performance



DS8700 Performance Matrix (System z workloads)

DS8K Metric DS8700 DS8300 % Chg

FICON 4K Read Hit (IOs/sec) 364K 232K 56%

FICON 4K Write Hit (IOs/sec) 145K 120K 20%

zHPF 4K Read Hit (IOs/sec) 420K 344K 22%

zHPF 4K Write Hit (IOs/sec) 162K 124K 30%

FICON DB zOS (IO/sec) 181K 124K 45%

FICON Cache Hostile (IO/sec) 142K 89K 59%

FICON Cache Friendly (IO/sec) 206K 142K 45%

zHPF DB zOS (IO/sec) 201K 165K 21%

zHPF Cache Hostile (IO/sec) 156K 109K 43%

zHPF Cache Friendly (IO/sec) 227K 189K 20%

FICON 4K Read Miss (IOs/sec) 129K 64K 101%

FICON 4K Read-Write Miss (IOs/sec) 89K 62K 43%

FICON 4K Write Miss (IO/sec) 71K 49K 44%

zHPF 4K Read Miss (IOs/sec) 128K 86K 48%

zHPF 4K Read-Write Miss (IOs/sec) 90K 63K 42%

Sequential Read BW (GB/sec) 9.3 4.1 126%

Sequential Write BW (GB/sec) 5.3 2.1 152%

*Note: For almost all these maximum throughput benchmarks, all 32 Host Adapters must be utilized.

2.52x



DS8700 Performance Matrix (Distributed workloads)

DS8K Metric DS8700 DS8300 % Change

"SPC-1-like" (IOs/sec) 155K 123K 26%

4K Read Hit (IOs/sec) 523K 425K 23%

4K Write Hit (IOs/sec) 203K 164K 23%

4K Read Miss (IOs/sec) 137K 111K 23%

4K Write Miss (IOs/sec) 109K 92K 18%

DBOpen 70/30/50 (IOs/sec) 191K 165K 14%

Sequential Read BW (GB/sec) 9,7 3,9 148%

Sequential Write BW (GB/sec) 4,7 2,2 113%

Single HA Read BW (MB/sec) 530 472 12%

Single HA Write BW (MB/sec) 400 265 50%

One DA Pair Read BW (MB/sec) 1239 866 43%

One DA Pair Write BW (MB/sec) 751 630 19%

2.48x

* Preliminary Pre-GA benchmarks


IBM®

System Storage®

DS8700 Easy Tiering (5.1)



The trend towards larger disks continues!

DS8000 Drive Sizes Shipped by Quarter (percent)



SSDs compared to spinning disks

Disadvantages

� Wear issues– Errors may creep in over time– SSD controller designed in multiple

layers of error recovery (ECC, RAID, write-reduction, wear-leveling technology)

� Capacity– Relatively small capacity per drive unit

today compared to spinning disks– NAND and SSD industry expecting

breakthrough in capacity (SLC, MLC, XLC and PCM technology.)

� Cost– Significant more raw cost/GB today than

HDD– Need new technology to improve cost

performance ratio.

Advantages

� Absence of mechanical moving parts– Significantly more reliable

� Green– Power - Fraction of power consumed– Heat - Fraction of heat dissipated

and tolerant of wider range of temperature.

� Performance– Up to 100x more throughput and 10x

lower response time than 15K RPM spinning disks

– $/IOPS is significant better than traditional spinning disk.



Multiple Tiers Storage view - Today

� Multiple Tiers Storage System manages different device types. Each device type may have hundreds to thousands of each device types.

� Optimize for – Cost Performance – Cost Capacity– Cost Reliability– Cost Power

Consumption– Scalability

43

IBM System Storage DS8000

SSD RAID Array(s)

FC/SAS RAID Array(s)

SATA RAID Array(s)

Applications

VirtualDisk

Virtual Disk Layer Managed Disk LayerStorage

Virtualization

Two Problems ! Little insights in application performance which can be affected by SSD characteristics Additional Storage Management for more tiers



44

Workload Learning through Smart Monitoring

� Each workload has its unique I/O access patterns and characteristics over time.

� Smart Monitoring and analysis tool allows customers to develop new insight to application optimization on storage infrastructure.

� This workload shows performance skews in three LBA ranges.

Inactive Disk RegionInactive Disk Region

Cool Data RegionCool Data Region

Lo

gic

al

Blo

ck A

dd

ress (

LB

A)

Lo

gic

al

Blo

ck A

dd

ress (

LB

A)

Time (Minutes)Time (Minutes)

Hot Data RegionHot Data Region



45

Demonstration of IBM Automated Data Reallocation

� Result:

– Improve application response time of 60-70+% at peak load by moving 5% of hot spot to SSD.

•Sustainability test, 76%

•Ramp test, 77%

� Demonstration of ADR:

– Compare “SPC-1 like”workload on HDD versus ADR with HDD and SSD”

– ADR Technology identifies and non-disruptively migrates “hot data” from HDD to SSD. About 4% of data is migrated from HDD to SSD.

60-70%+ Reduction in "SPC-1 Like" Average Response Time

with DS8000 Smart Tiering Technology

0

2

4

6

8

10

0 5000 10000 15000

IOPS

Re

sp

on

se

Tim

e (

ms

)

0.00%

20.00%

40.00%

60.00%

80.00%

100.00%HDD only

HDD+SSDwith SmartTiering

% Avg. RTReduction

ADRHDD+SSD



46

Traditional disk mapping Dynamic Virtual Storage mapping

All volumes appear to be “logically”homogenous to apps. But data is placed at the right tier of storage based on its usage through smart data placement and migration.

Volumes have different characteristics. Applications need to place them on correct tiers of storage based on usage.

Host

Volu

mes

DynamicVirtual volumes

Phys

ica

l D

evic

es

EASY TIER

Traditional Disk vs. Dynamic Virtual Storage Mapping



Easy Tier - Overview

� Easy Tier is a new DS8700 feature that supports online dynamic relocation of data – Workload learning algorithms collect I/O statistics and generate a heat map of data

to be optimized on SSD– Data can be relocated to/from SSD and FC/SATA

• Automatic Mode

Provides automated extent level relocation granularity

Requires use of a merged extent pool• Manual Mode

Provides online dynamic volume relocation capability

– CLI/GUI setup and management– Storage Tier Advisor Tool (STAT) for I/O analysis and projected benefit

� DS8700 Hardware feature– Easy Tier is a new LIC feature available with Release 5.1 – Supported by all server platforms with no additional software



Easy Tier - Data Relocation Options

Automatic extent level data relocation enabled in a Merged Extent Pool

Automatic ModeExtent Level Data Relocation

SSD Rank Pools FC or SATA Rank Pools

Merged Pool (SSD/FC or SSD/SATA)

Manual ModeVolume Based Data Relocation

Manual Mode (Volume Level) and Automatic Mode (Extent Level)



Easy Tier – Automatic Mode Extent Relocation

Logical Volume Mixed Technology Extent Pool

SSD Arrays

HDD Arrays

Extent Virtualization

Hot Extents Migrate Up

Cold Extents Migrate Down



Easy Tier – Automatic Mode Setup

� Options for configuring extent pools for Automatic Mode– Create new extent pool with SSD + HDD ranks– Merge existing SDD and existing HDD extent pool– Add SSD rank to existing HDD extent pool– Add HDD rank to existing SSD extent pool if no space efficient capacity (virtual

capacity or repository) configured in the extent pool

� Options for configure logical volumes for Automatic Mode– Create new logical volume in mixed technology extent pool– Migrate standard logical volumes between homogeneous and mixed

technology extent pool– Merge existing homogeneous extent pool with existing logical volumes with

another extent pool to create a mixed technology extent pool

� Existing recommendations continue– Each extent pool utilize same RAID format, size and speed of HDDs



Easy Tier – Automatic Mode User Interfaces

� Design point is for customer to not normally need or use any controls to manage Automatic Mode

� Easy Tier Automatic Mode– Enable / disable

• Stops automatic mode extent migration while disabled

� Easy Tier Automatic Mode monitoring– Disable / managed volumes / all volumes

• Ignores workload activity in plan generation statistics while disabled• Plan generation suppressed if insufficient monitoring history since last plan (16 hours)• Managed volumes is normal setting and monitors workload on volumes in managed

pools if the Easy Tier LIC feature is enabled• All volumes causes all logical volumes to be monitored (with or without LIC feature)

Can be used with analysis tools prior to ordering and enabling the LIC featureCan be used to analyze logical volumes in homogeneous extent pools as

candidates for mixed technology pool

� Analysis Tools– Can offload reports on extent monitoring and obtain SSD capacity planning

recommendations– Can engage IBM for extended analysis and consulting



Easy Tier – Manual Mode Overview

� Easy Tier Manual Mode allows a user to perform the following actions:– Volume Migration

• User can change a logical volume’s storage technology by dynamically relocating between extent pools

• User can change a logical volume’s extent allocation algorithm (EAM) (e.g. can re-rotate extents within the target extent pool)

– Extent Pool Merge• User can merge two existing extent pools without moving data

Consolidate extent pools with equivalent disks

Merge extent pools with to create a mixed technology extent pool for Automatic Mode


IBM®

System Storage®

DS8700 (Metro) Global Mirror function enhancements



PPRC-XD OVER

LONG

DISTANCE

CHAN EXT

FlashCopy

0

10

1

0

00

10

00

0

10

REMOTE

APPLICATION

HOSTS

0

10

1

0

00

10

0

00

1

0

Change

Recording

bitmap

Out of

Sync

bitmap

PPRC 'A'

PRIMARY

CHAN EXT

PRIMARY

APPLICATION

HOSTS

PPRC ‘B’Secondary and FC Source

FC ‘C’Target

Local Site Remote Site

� Principe d’e la propagation d’état représenté par une bit map et non pas de mouvements

� PPRC Extended Distance (PPRC-XD) du site local vers le site remote

� Des copies automatiques cohérentes sont crées sur le site remote– Volume A utilise la “change recording bitmap” pendant la création du groupe de cohérence– Toutes les données sont envoyées sur le site remote et l”inband FlashCopy” sur le site remote crée un jeu de données cohérentes

sur le volume C

� Prévu pour s’ajuster sur les pointes sans impact sur les applications du primaires

Global Mirror : Principle



Metro Global Mirror

C

D

B Global Mirro

r

A

Metro mirror

Site 1

Site 3

Site 2




Master

Subordinate

GlobalMirror

Application1 Application2

Global Mirror – Single Session




Master

Subordinate

GlobalMirror

Sessions can be divided by server or application.

Application1 Application2

Global Mirror – Multiple Sessions


IBM®

System Storage®

DS8800Description



DS8800 : Performance et efficiency

Tiroirs de disques

Batteries

Console

ContrôleursPOWER 6+

Rear

I/O drawers

Power Supplies

•New disk format•SFF disks 2,5”•6 Gb/s SAS (SAS-2)•24 disks per drawer

•New processors•IBM POWER6+

•New adapters •8 Gb/s FC•8 Gb/s Disks attachements



From DS8700 to DS8800

� Upgraded P6 Servers

– Leverage 2 or 4-way P6+ 5Ghz

� New host adapter

– 4 or 8 ports, 8Gb SAN connection, multi-core,

PCI-e

� New RAID adapter

– 8 ports, 8Gb FC, multi-core, PCI-e

– Better support for SSD modules

� New disk enclosure & power system

– Higher density, SFF SAS 2.0, 8Gb FC Fabric

– Hot aisle / cold aisle cooling design

P6

P6 P6

RIO RIO

New 2U disk enclosure for 24 SAS/SFF

HDD/SSD modules

DS8800

P6+

5GHz server

P6

Disks

New 8 Gbpshost adapter

New 8Gbps device adapter (up to 3,000

HDD capability)

• Reduced power requirements• Reduced floor space & service



61

DS8800: setting new environmental standards

DS8300/87001024 Drives in 5 Frames

DS88001056 Drives in 3 Frames

• ~40% less power

• ~33% less weight

• ~40% less floor space

DS8700 1-Frame128 Drives

DS8800 1-Frame240 Drives

• Same power consumption

• Same Weight

• Up to 87% more disks

240 336 480

128

128

240

256 256 256 128

480

GA

+ 6 months

480

GA

+ 12 months

Over 2000

Drives in

5 Frames(*)



DS8000 : performance leadership

units

DS8300

P5+

2.2 GHz 4way

DS8700

P6

4.7 GHz

DS8800(*)

P6+

5 GHz

Read Seq GB/s 4 9.7 12.5

Write Seq GB/s 2 5.7 6,4

DB open K IO/s 155 191 221

x 3.1

x 3.2

x 1.4



New Device Adapters + SSD : random accesses

0

10

20

30

40

50

KIO

/se

c

Read Write

Single DA

DS8800 DS8700 DS8300

0

20

40

60

80

KIO

/se

c

Read Write

DA Pair

DS8800 DS8700 DS8300

(*) DS8800 performance figures are preliminary, final numbers will be published at GA



0

500

1,000

1,500

2,000

MB

/se

c

Read Write

Single DA

DS8800 DS8700 DS8300

News Device Adapters : Sequential access

0

500

1,000

1,500

2,000

2,500

3,000

3,500

MB

/se

c

Read Write

DA Pair

DS8800 DS8700 DS8300



Size Drive Type Drive Speed

73GB SSD (FC/LFF)

146GB SSD (FC/LFF)

600GB SSD (FC/LFF)

73GB FC (LFF) 15K RPM





1TB SATA (LFF) 7.2K RPM

2TB SATA (LFF) 7.2K RPM

Drive support in DS8700

Drive support in DS8800

10K RPMSAS (SFF)

FDE version also

600GB

Size Drive Type Drive Speed

300GB SSD (SAS/SFF)

146GB SAS (SFF) 15K RPM

450GB SAS (SFF)

FDE version also

10K RPM

1500GB NL-SAS (SFF) 7.2K RPM



Hard Disk Drives: 3.5” vs. 2.5”

0

500

1000

1500

2000

IOPS

Random read Random write

DS8000 6+P array performance

3.5" 450GB 15K 2.5" 450GB 10K

0

200

400

600

800M

Bps

Seq read Seq write

DS8000 6+P array performance

3.5" 450GB 15K 2.5" 450GB 10K



Code Streams in 2010 and 2011

Release 5.0

Release 5.1

Release 6.0

DS8700w/LFF drives

DS8700 w/LFF drives• Easy Tier• …

DS8800 w/SFF drives

Release 6.1



R6.1 Functions (1H2011)

� Thin Provisioning (distributed only) , � Quick Initialization (distributed only)� High Performance FICON (Multitrack)� Easy Tier� Eight drive install groups of Solid State Disk (SSD) � Remote Pair FlashCopy®� Prevent deletion of CKD and FB volumes in use � Disable recovery key � Rekey data keys of an encryption group � z/HPF extended distance� Multiple Global Mirror sessions (RPQ only)

*** IBM Confidential ***



Current DS8700 roadmap

� DS8700 models will coexist with DS8800

� Additional 600GB SSD choice in 4Q2010

� Enhanced 8Gbps Host Adapter in 1H2011

� Additional code enhancements in R6.1

� More enhancements TBD

*** IBM Confidential ***

All statements regarding IBM future direction and intent are subject to change or withdrawal without notice, and represents goals and objectives only.



Thank You!

L'offre high End Stockage IBM€¦ · L’offre High End Stockage IBM Philippe Riou...

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