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IBM System Storage™ DS3000 Series

IBM System Storage™ DS3000 Series. Jüri Joonsaar 30.10.2008 Tartu. DS3000 Series. IBM System Storage DS3200 SAS host interface disk system. IBM System Storage DS3300 iSCSI host interface disk system. IBM System Storage DS3400 FC host interface disk system.

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IBM System Storage™ DS3000 Series

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  1. IBM System Storage™DS3000 Series Jüri Joonsaar 30.10.2008 Tartu

  2. DS3000 Series IBM System Storage DS3200 SAS host interface disk system IBM System Storage DS3300 iSCSI host interface disk system IBM System Storage DS3400 FC host interface disk system

  3. DS3000 Series - Common Features 2U enclosure supporting up to 12 SAS and/or SATA drives Online capacity expansion up to 48 drives with EXP3000s Dual-active RAID controllers with mirrored, battery-backed cache Redundant, hot-swappable components Telco model supports -48v DC power supplies Supports tiered storage with SAS and SATA intermix support Intuitive DS3000 Storage Manager software Support for up to 32 Storage Partitions Support for FlashCopy and VolumeCopy

  4. DS3000 Enclosures DS3200, DS3300 or DS3400 DS3200 Controllers SAS and/or SATA drives DS3300 DS3400 Power/cooling

  5. DS3200 – A Closer Look • One or three 3-Gbps SAS host ports per controller • Each port is a 3-Gbps x4 “wide” link Ethernet management port SAS host ports SAS expansion port Power Supply / Cooling Diagnostics port for servicing 3 SAS host port per controller model

  6. DS3300 – A Closer Look • Two 1-Gbps iSCSI host ports per controller iSCSI host ports Ethernet management port SAS expansion port Power Supply / Cooling Disabled SAS port Diagnostics port for servicing

  7. DS3400 – A Closer Look • Two 4-Gbps FC host ports per controller Ethernet management port SAS expansion port FC host ports Diagnostics port for servicing Disabled SAS port Power Supply / Cooling

  8. DS3000 Host Cabling DS3200 DS3300 DS3400 Direct attach Direct attach IP SAN attach FC SAN attach

  9. DS3000 Storage Manager Based on 6th generation DS4000 Storage Manager code Recovery Guru and email diagnostic alerts Task-oriented user interface is intuitive and simple Initial Setup Tasks dialog box provides six steps to setting up the disk system Supports RAID levels 0, 1, 3, 5, 6 and 10 Summary page is the “landing page” providing an “at-a-glance” portal-view of the system

  10. Benefits of Premium Features

  11. A logical unit consisting of one or more volumes that can be accessed by a single host or shared among hosts One or more volumes are mapped to an individual host or host group This volume-to-LUN mappingdefines what host or host group will have access to the volume Partition access is maintainedat the controller level HostGroup C Host A Host B LUN 0 Logicalpartition A Logicalpartition B Logicalpartition C LUN 0 LUN 0 LUN 1 LUN 1 LUN 1 LUN 2 unmapped volumes What is Storage Partitioning?

  12. A point-in-time (PiT) image of a logical drive Logical equivalent of a physical copy Features: Instantaneous copy Requires less disk space than a full copy Map-able to any host Can be read from, or written to Primary uses: PiT backup image File restoration Data mining / analysis C’ BaseLogical Drive FlashCopy Logical Drive A B C A B C C’ FlashCopy Repository Logical Physical What is FlashCopy? A point-in-time image can be created in seconds

  13. Complete (byte-by-byte) PiT replication of one logical drive (source) to another (target) within a storage system Target logical drive also referred to as a clone Eliminates I/O contention on the primary logical drive Primary uses: Full PiT data set available for analysis, mining, testing, backup Migrating data betweenstorage tiers Production Server Analysis Server PiTClone Source logical drive VolumeCopy What is VolumeCopy? Fast copy of data with no server cycles

  14. Selecting A Drive Type • Understand customer’s requirements • Highest performance or highest utilization. • Best $/GB or balanced price/performance. • Understand application requirements • Highest IOPS or highest MB/s. • Heavy usage data or static data. • Understand drive characteristics • Time to data • Data transfer rate

  15. Understanding Performance Two primary metrics • IOPS • Measures random, small-block I/O • Transactional applications such as OLTP, databases, Exchange • MB/s • Measures sequential, large-block I/O • Data-intensive applications such as rich media, 3D modeling, simulation, high performance computing

  16. SATA SAS FC IOPS • IOPS measures random, small-block I/O • Key drive-based performance enablers: • Seek time, latency, rotational velocity, command queuing, number of drives • IOPS performance is heavily dependent on the number and type of disk drives • SAS drives have faster seek time, lower latency, faster rotational velocity, and better command queuing compared to SATA • Drive-limited configurations can result in similar performance between systems with very different maximum capabilities

  17. SATA SAS FC Throughput • MB/s measures sequential large-block I/O • Key drive-based performance enablers: • Data transfer rate, maximum I/O transfer size, command queuing • Throughput rates are heavily dependent on the internal controller bandwidth • Maximum throughput rates can typically be reached with a small number of disk drives • SATA delivers about 66% of SAS’s drive-level performance

  18. MB/s Application Access Patterns

  19. Application Access Patterns IOPS are best served by SAS drives MB/s an option for SATA drives

  20. Tiered Storage Solution of Choice • The DS3000 series can cost effectively support an organization’s entire range of data capacity requirements in a single disk system * Excludes BladeCenter Boot Disk System

  21. Performance Comparisons Notes: 1. SAS Drives, benchmarked with dual controllers 2. Performance results achieved under ideal circumstances in a benchmark test environment. Actual customer results will vary based on configuration and infrastructure components.

  22. Performance Comparisons Disk performance about equal Notes: 1. SAS Drives, benchmarked with dual controllers 2. Performance results achieved under ideal circumstances in a benchmark test environment. Actual customer results will vary based on configuration and infrastructure components. Beware, this is “best case.” In the real world, unless you have dedicated infrastructure, you will find somewhat slower IOPS, due to iSCSI network contention.

  23. Performance Comparisons Disk Reads ~ 42% Notes: 1. SAS Drives, benchmarked with dual controllers 2. Performance results achieved under ideal circumstances in a benchmark test environment. Actual customer results will vary based on configuration and infrastructure components.

  24. DS3000 Interoperability Matrix • DS3000 MTMs & Options covered by the matrix • What comes in the box with the system • Supported HW & SW options by DS3000 MTM • Operating System Support • Server Support • HBA Support • Fabric Support • HDD Support • Available ServicePac Options

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