Transcript
IBM DS8000 Enterprise Storage Roger G. Hathorn IBM Systems USA 02/11/2016 Session DK
© 2016 IBM Corporation
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Agenda
DS8880 storage family current features – release 8.1 DS8880 release 8.2 announcement
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DS8880 Release 8.1 (2Q+ 2016) §
DS8888 All Flash Array - Model 982 and 98F Expansion Unit −
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Three phase power option DS8000 Copy Services Manager (CSM) feature on the HMC RAID 10 support for fully populated High Performance Flash Enclosures (HPFE) New drive capacity options for DS8870, DS8884 and DS8886 − −
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Up to 2.5M IOPS and ~200 microsecond latency for typical workloads
1.8 TB 10K rpm drive sets 6 TB 7.2K rpm drive sets
Functional enhancements − − − − − − − − −
Small Extents Thin Provisioning for CKD devices SuperPAV DB2 Castout Accelerator User interfaces for PE package and statesave offload Media error recovery enhancements for PPRC secondary devices Native LDAP support via CSM SSD Home tier and Warm Promote for Easy Tier Key Management Interoperability Protocol (KMIP) as an alternative encryption key manager
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The DS8880 family
DS8888 DS8884
Fast Hybrid-Flash Block Storage Lowest entry cost for midrange enterprises §Hybrid Flash starting §256 GB Cache (DRAM) §64 Ports §768 HDD/SDD + 120 flash cards §19” Rack §Single phase
DS8886
Faster Hybrid-Flash Block Storage §High performance for large enterprises §Hybrid Flash §2 TB Cache (DRAM) §128 Ports §1536 HDD/SDD’s + 240 flash cards §19” Rack §Single / three phase
Fastest All-Flash Block Storage §Industry’s fastest T1 Subsystem §All-flash §2 TB Cache (DRAM) §128 Ports §480 Flash cards §19” Rack §Three phase
IBM introduced a member to the DS8880 family, a new business-critical all-flash data system to offer a wide range of price points. The family is powered by the next generation of IBM's proven DS8000 platform and delivers critical application acceleration, uncompromising availability and industry-leading capabilities. © 2016 IBM Corporation
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DS8880 Power § The DS8888 will support three phase power § A new three phase power option will be available for the DS8886 − This will take more space in the DS8000 rack so number of drives on initial frames will be reduced § The DS8884 will remain as single phase only
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SuperPAVs § Today Alias devices can be used within LSS which means that the number of aliases must be sized individually for each LSS. § SuperPAVs will enable alias devices to be shared among multiple LSS so long as − The devices are assigned to the same DS8000 server (odd/even LSS) − The devices share a path group on the z/OS system
§ Using SuperPAVs will provide benefits especially with a large number of LPARs or many LSS sharing a path group − Any existing IOSQ peaks should reduce as a larger pool of aliases are available − Existing LSS can have more capacity added without increasing the number of aliases − New LSS can be planned to have a larger amount of capacity per alias
§ There is still a need for at least one base device per LSS so with this release it is not possible to define an alias only LSS 6
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DB2 Castout Accelerator §
DB2 writes long chains of writes when it performs castout processing which typically contain multiple locate record domains. Today each IO in the chain will be synchronised individually affecting both simplex and Metro Mirror performance. The syncs cause performance delays (>150us per page) that are not required.
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Other applications such as ZFS that do long chains of scattered writes can also benefit from this enhancement
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Media manager can tell us that there is a "single logical locate record domain", even though there are multiple imbedded locate records. The data hardening requirements for the entire IO are as if this was a single LR domain so one PPRC sync is done for the entire chain.
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zHPF only
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Prototype code results showed a 49% improvement in performance with Metro Mirror for typical write chains similar to DB2 castout and 70% for simplex devices.
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Media Error Recovery on PPRC secondary §
For environments with multiple site replication environments media errors or other data loss events can occur on any of the replicated copies. HyperSwap protects against events on the production copy but manual actions are currently needed if there is an event such as a RAID rebuild failure on other copies of data. § When a media error occurs on the secondary the DS8000 will log the track range lost and suspend the pair showing suspend reason x’11’ which will result in a GDPS freeze. Reason code x’3B’ will also be provided on the event notification for the suspend − For Global Copy and Global Mirror auto unsuspend will add the track range to the OOS and the tracks will be recovered on resync. − For Metro Mirror resynchronisation will add the track range to the OOS and the tracks will be recovered on resync. § In the initial release only a subset of data loss events will be covered by this functionality. − Only media error events will be covered (ESCs 4910 and 4920) − Only up to 500,000 tracks will be able to be handled − Failover/failback conditions can cause the information about lost tracks to be lost − Call Home events will notify support and the user about status and if there are data loss conditions not handled by this functionality 8
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Create & Offload PE Package & Statesave §
Out Of Band generation & offload of Statesaves, ODD dumps, PE Package, PE Package by Area
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Performed via DS-CLI or ReSTful API − Default is offload last available
− Can list and select any available Examples: dscli>offloadfile -dev IBM.2107-1300861 –pepackage dscli>offloadfile -dev IBM.2107-1300861 -statesave §
Automation opportunities previously discussed as part of Restoring Storage Resilience • GDPS HyperSwap occurs • Issue commands to offload PEPkg/SS automatically • Data for Analysis is available far sooner / Problem Resolved sooner / Swap Back sooner
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Small extent size §Reduce extent size on DS8000 from 1GB to 16MB (1113 cyls to 21 cyls for ECKD) –Larger memory sizes on next generation systems allow for smaller extent allocation without performance penalties –z/OS allocation unit for EAV devices is 21 cyls so dataset allocation will match extent boundary §Improves efficiency of tiering functionality, copy services as well as providing more efficient capacity usage §Improves balance among rank resources even at very short time intervals significantly improving performance stability even for very bursty workloads
1 2 7 8 1 4 5 8 11
4 5
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9 2
3
6 9
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§Allows for use of Space Efficient FlashCopy with Global Mirror with improved performance compared to the current Track Space Efficient FlashCopy –Significant reduction in cost for high performance Global Mirror environments
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Small Extents with Flash Copy § ESE Flash Copy with Small Extents replaces TSE Flash Copy – more space efficient than ESE with large extents – better performance than TSE Flash Copy § Pool with small extents supported for Flash Copy Target volumes § Supported for Global Mirror Journal Volumes § For optimal performance include 10% Flash in the small extent pool
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Easy Tier enhancements § SSD Home Tier −
As the price of Flash/SSD reduces clients are configuring larger percentages of Flash in tiered environments. Given a larger percentage of Flash the initial allocation of extents on flash makes better sense − SSD Home tier will change Easy Tier behaviour in the following ways • Extent allocation will be performed on tier0 then tier1 then tier2 • Cold Demotion will be performed from tier0 to tier1 • Additional space will be reserved on tier0 for thin provisioned volume allocations (currently 24 extents) − SSD Home Tier will be an optional switch provided at the DS8000 box level
§ Warm Promote − − −
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Environments using Nearline drives have occasionally seen problems where there is a significant amount of data on Nearline that suddenly becomes active. The same could also apply with larger Enterprise drives Warm Promote will act in a similar way to Warm Demote and if the 5 minute average performance shows a Nearline (or Enterprise) rank is overloaded will immediately start to promote extents until the condition is relieved. As the Nearline performance profile is somewhat conservative this is quite likely to occur if there is any significant activity on Nearline ranks but for Enterprise ranks is less likely
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Thin Provisioning for ECKD in DS8880 §
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Once allocated provides the same performance as fully provisioned devices for both random and sequential workloads − Allocating writes require metadata updates as each extent is allocated Unallocated extents do not have to be copied with replication functionality or migrated with Easy Tier
A001 DB1234
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A002 Storage Pool SPARE1 1
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Simplify configuration by standardizing device sizes without wasting space − Unused/unallocated devices can be included in replication configuration avoiding frequent changes Allow for sharing of spare storage capacity across sysplexes or between storage groups
SSD drives
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1
5
3 4
300GB drives
300GB drives
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3TB drives
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IBM® DS8880 Roger Hathorn STSM IBM Systems IBM DS8880 Release 8.2 Release Announcement Summary
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DS8880 R8.2 Announcement Summary § § §
HPFE Gen 2 Flash overview and history HPFE Gen2 hardware and benefits
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CKD Thin Provisioning enhancements − Extent level space release − PPRC from Full to ESE
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Enhanced FICON IU pacing − For better performance with higher speed links at distance.
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Miscellaneous items of interest − DSCLI support for z/OS – can run under UNIX system services − RAID Options and New Model Numbers
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NAND Flash technology is used across the IBM Systems Flash Storage Portfolio NAND Flash comes in many types Flash Memory provides important advantages over tradition Hard Disk Drives: üFaster read and write operations üNon-volatile üLess prone to damage üPhysically small üLow power consumption üInherently rugged
ü Single-level cell (SLC) - Highest performance ü Multilevel cell (MLC) - Good balance between performance and cost ü Triple-level cell (TLC) - Lower cost for read intensive workloads MLC1 NAND Technology is used across the IBM Systems Flash Storage portfolio
1Enterprise MLC (eMLC) or IBM enhanced MLC
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Flash technology can be used in many forms … IBM Systems Flash Storage Offerings
• All-flash arrays
are storage solutions that only use flash media (CFH or SSDs) designed to deliver maximum performance for application and workload where speed is critical.
• Hybrid-flash arrays Hybrid-flash array (HFA)
Mixed (HDD/SSD/CFH)
All-flash array (AFA)
All-SSD
All-Custom Flash Hardware (CFH)
SSD refers to a flash media based storage device that is accessed and managed as a logical disk drive, consisting of a standard disk drive interface (such as SAS or SATA). Their sizes are 1.8 and 2.5 inches
Source: IDC's Worldwide Flash in the Datacenter Taxonomy, 2016
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are storage solutions that support a mix of HDDs, SSDs and CFH designed to provide a balance between performance, capacity and cost for a variety of workloads
CFH defines an architecture that uses optimized flash modules to provide better performance and lower latency than SSDs. Examples of CFH are: • •
High-Performance Flash Enclosure Gen2 FlashSystem MicroLatency Module
The DS8880 Family offers All-flash and Hybrid-flash with CFH, SSD and HDD configurations designed to satisfy a wide range of business needs from superior performance to cost efficient requirements IBM Systems
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Flash brings real benefits that justify the investment by far … Besides the performance benefits, there are additional compelling advantages when adopting Flash technology 1.Meet or exceed the performance level agreements with far fewer devices
4. Fewer servers require less spending on software licenses
2.Flash requires lower energy and less floor space consumption
5. Lower operating and administrative costs
3.Fewer servers are required due to better CPU utilization
6. Better reliability since flash is based on electronic rather than mechanical media
Source: Justifying Investment in All-Flash Arrays. IDC August 2016
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Future view of the All-flash and Hybrid-flash market …
74.5%
of the business revenue will be flash-based (AFA and HFA) by 2020
All Hard Disk Drive
Hybrid Flash 42.11% 41.70% 42.64% 43.85% 44.66%
45.63% 45.25%
5.64% 11.20% 16.28% 20.38% 24.05%
27.38% 29.28%
All Flash
Source: Worldwide External Enterprise Storage Systems Forecast, 2016–2020, Publication Date: IDC Jul , 2016
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IBM DS8880 R8.2 Announcement Summary 1.- High-Performance Flash Enclosure Gen2 ü Enables faster decision making with up to 2x performance improvement per enclosure1 on real-time analytics, cognitive computing and traditional IO intensive workloads ü Manages business data growth with up to 6 times more capacity per enclosure for storage consolidation and high-data-volume workloads2 ü Improves data protection for superior business continuity where integrity is critical by using RAID 6 as default
High-Performance Flash Enclosure Gen2
2.- Thin Provisioning space release for z System volumes ü Provides better synergy with z Systems by enabling space release functionality for Count Key Data (CKD) volumes ü Improves storage efficiency by releasing free extents and making them available for reuse 1Two times more performance per enclosure compared with the previous generation of High-Performance Flash Enclosures. The performance is 2.5M IOPS per DS8880 system 2 Six times more capacity per enclosure considering the previous generation of High-Performance Flash Enclosures with 30 x 800 GB Flash Cards ( 24 TB) and the new generation of flash enclosures with 48 x 3.2 TB Flash Cards ( 153.6 TB) © 2016 IBM Corporation
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IBM DS8880 R8.2 Announcement Summary 3.- Improved DS8000 Storage Manager Graphical User Interface Automatic creation based on unassigned host ports
ü Helps organizations in accelerating the storage deployment process by simplifying the definition and configuration of new host servers ü Provides advanced collaborative tools to storage administrators in order to work more efficiently with support, enabling problem determination in a fraction of the
time
4.- Enhanced FICON at extended distances on long read and write operations1 ü Improves customer satisfaction and business continuity by increasing the throughput up to 4 times on z/OS Global Mirror (zGM) initial copy or resynchronization, as well as improving performance of DFSMSdss, DB2 Utilities and other software using long FICON chains especially in in multi-site parallel sysplex environments 1 Applies only to 16Gb FC Host Adapters © 2016 IBM Corporation
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CKD Thin Provisioning specifics § Space Release − DFSMSdss SPACEREL utility to release dataset extents for volumes or storage groups − Protected by RACF FACILITY Class profile, STGADMIN.ADR.SPACEREL − Supported on Metro Mirror primaries (or simplex devices) only at this time § PPRC from standard to ESE volumes for migration − Secondary volume becomes fully provisioned (if the same size) − SPACEREL after relationship termination
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High-Performance Flash Enclosure Gen2 is a breakthrough in technology 1 to 1
High-Performance Flash Enclosure
High-Performance Flash Enclosure Gen2
1U
4U
Size Flash card options Number of supported flash cards Max raw capacity RAID protection
16, 32 or 48 (2.5”)
24 TB1
153.6 TB2 Over 6x
5 / 10
5 / 6 /10
Two PCIe Gen 2
Install groups
2 install groups of 16 Flash drive and 14 Flash Drives (4 array sites)
• Two PCIe Gen 3 for attachment to the IO / Micro Bay • Eight SAS 6Gb for attachment to the Gen2 enclosure 3 install groups of 16 Flash drive each (6 array sites)
Performance
2
400 / 800 / 1600 / 3200 GB
Attachment
Increments
1
400 / 800 GB 16 or 30 (1.8”)
Populate in increments of a single High-Performance Flash Enclosure IOPS Throughput
Populate in increments of a single storage group consisting of: One HighPerformance Flash Enclosure Gen2 + Two IO / Micro Bays IOPS Throughput
Read
340,000
3.8 GB/s
Read
650,000 +90%
8 GB/s + 110%
Write
200,000
2.7 GB/s
Write
300,000 +50%
5 GB/s + 85%
30 flash cards x 800 GB 48 flash cards x 3.2 TB © 2016 IBM Corporation
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Total raw flash capacity comparison between the previous and the new DS8884 and DS8886 models 700000 614400
Over 3 times the flash capacity of the previous models
600000 500000
TB
400000 307200 300000 192000
200000 100000
96000
0
DS8884
DS8886 HPFE
DS8884 DS8886
HPFE Gen2
HPFE 96000 192000 © 2016 IBM Corporation
HPFE Gen2 307200 614400 IBM Systems
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DS8888 Performance – zHPF
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DS8888 Performance – All Flash
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RAID 6 for mission-critical protection Drive media is rapidly increasing in capacity to 10TB and more. The greater density provides real cost advantages but requires changes in the types of RAID protection used
S
P Q 5 4 3 2 1
S
ü Performs better than RAID 6 ü Provides more usable capacity
P 6 5 4 3 2 1
Traditionally RAID 5 has been used over RAID 6 for Enterprise and Flash media because:
RAID 5 RAID 6 RAID 5 uses one parity drive whereas RAID 6 uses two
However as the drive capacity increases , RAID 5 exposes enterprises to increased risks, since higher capacity drives are more vulnerable to storage media errors during array rebuild ü Data will be lost, if a second drive fails while the first failed drive is being rebuilt ü Media errors experienced on a drive during rebuild result in a portion of the data being non-recoverable
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The DS8880 family takes the increased risks posed by high capacity drives very seriously In order to improve data availability, IBM moves protection to the next level by enabling RAID 6 as default in the GUI for all drive types RAID 6 ensures business continuity for mission-critical applications because: ü Data is still protected event if a second drive fails while the first failed drive is being rebuilt ü Information placed in unreadable regions in a specific drive can be detected, isolated and recovered from the remaining drives ü RAID 6 provides a 1000x improvement over RAID5 for impact risk
The use of RAID6 rather than RAID5 can dramatically reduce the probability of drive failures providing increased protection for workloads where data integrity is critical
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IBM DS8880 Family: All-flash and Hybrid-flash Made for Business-Critical Workloads Enterprise Class
Business Class
DS8884
Model Cache FC/FICON ports Media Max raw capacity
DS8886
Analytic Class
DS8888
Affordable hybrid-flash block storage solution for midrange enterprises
Faster hybrid-flash block storage for large enterprises designed to support a wide variety of application workloads
Fastest all-flash block storage with superior performance designed to address the most demanding business workloads
984
985 (Single Phase) 986 (Three Phase)
982
256GB
2TB
2TB
64
128
128
768 HDD/SSD 96 flash cards
1536 HDD/SSD 192 flash cards
480 Flash cards
2.6 PB
5.2 PB
384 TB
IBM DS8880 is the business-critical storage family designed to offer a wide range of price points. This enterprise storage data systems are powered by the next generation of IBM's proven DS8000 platform and deliver critical application acceleration, uncompromising availability and industry-leading capabilities © 2016 IBM Corporation
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Efficiently consolidate all your business-critical applications Only the IBM DS8880 family provides the deepest integration with IBM® z Systems™ while supporting IBM Power Systems, and Distributed Systems under a single management point
Enable your business to efficiently address the widest variety of workloads: Cognitive: All-flash and hybrid configurations to support operational decisions and optimize business processes in real-time
Cloud: RESTful and OpenStack APIs to enable critical workloads applications in private and public cloud environments
Business Analytics: Superior performance and unparalleled availability for analytics applications and real-time decision making
I/O-intensive: Improved data speed access for databases, enterprise resource planning systems, online transaction processing systems and data warehouse applications
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Workloads and Use Cases: IBM DS8000 family Cognitive
Cloud
A Health institution turns its IT department into an affiliate company that offers specialized IT services to other health insurers and adds USD 5 million in income. This institution uses IBM z/OS and IBM System Storage DS8000 to develop a solution with a market-leading interface powered by IBM Watson Explorer Enterprise Edition cognitive search. This solution learns from
A Health institution successfully opens its first clinic by an aggressive deadline and gains a reliable IT infrastructure for its clinical applications and facilitates smooth operation of the new clinic by designing and building a storage infrastructure based on IBM SmartCloud Control Desk and IBM System Storage DS8000
searches over time, refining results based on the success of past interactions Cognitive
Analytics
Business Analytics An energy corporation accelerates audits by 98 percent, gains insights into customer behavior and eliminate the manual reporting tasks integrating SAP, ERP, SAP for utilities and SAP Business Warehouse software by connecting the servers to multiple IBM System Storage DS8000 solutions
Cloud
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I/Ointensive
I/O-intensive A restoration services company in Germany improved the performance for most mission critical SAP applications and the underlying DB2 database by up to 50 percent and decreased backup times from 3.5 hours to two minutes, a 99 percent reduction. All of this using the IBM Systems Storage DS8000
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