Front cover -- Contents -- Figures -- Notices -- Trademarks -- Preface -- The team that wrote this redbook -- Become a published author -- Comments welcome -- Chapter 1. Model characteristics -- 1.1 Benefits of the DS6000 series -- 1.1.1 Infrastructure Simplification -- 1.1.2 Business Continuity -- 1.1.3 Information Life Cycle Management -- 1.2 Hardware overview -- 1.2.1 DS6800 controller enclosure (Model 1750-511) -- 1.2.2 DS6000 expansion enclosure (Model 1750-EX1) -- 1.3 Functional overview -- 1.3.1 Storage capacity: RAID 5 and RAID 10 -- 1.3.2 Resiliency -- 1.3.3 Copy Services -- 1.4 DS management tools -- 1.4.1 IBM TotalStorage DS Storage Manager -- 1.4.2 IBM TotalStorage DS Open API -- 1.4.3 IBM TotalStorage DS Command Line Interface (CLI) -- 1.5 Supported environments -- 1.6 Performance overview -- 1.6.1 Sequential Prefetching in Adaptive Replacement Cache (SARC) -- 1.6.2 Performance for zSeries -- 1.6.3 IBM TotalStorage Multi-path Subsystem Device Driver (SDD) -- 1.6.4 Command Tag Queuing -- 1.7 IBM TotalStorage DS family comparisons -- 1.7.1 DS6000 series compared to ESS -- 1.7.2 DS6000 series compared to DS8000 -- 1.7.3 DS6000 series compared to DS4000 series -- 1.8 IBM DS6000 combined with virtualization products -- 1.8.1 IBM SAN Volume Controller -- 1.8.2 IBM SAN File System -- Chapter 2. Hardware configuration planning -- 2.1 Rules of thumb and benchmarks -- 2.2 Understanding your workload characteristics -- 2.3 DS6000 major hardware components -- 2.4 DS6000 server processor -- 2.5 Cache and persistent memory (formerly NVS) -- 2.5.1 Cache -- 2.5.2 Persistent memory -- 2.5.3 Cache algorithms -- 2.5.4 Cache size consideration -- 2.6 DS6000 disks -- 2.6.1 DS6000 disk capacity -- 2.6.2 Disk four-packs -- 2.6.3 Disk four-pack capacity -- 2.6.4 Disk four-pack intermixing -- 2.6.5 Disk conversions -- 2.7 Choosing the DS6000 disks.

2.7.1 Disk capacity -- 2.7.2 Disk Magic examples using 146 GB and 300 GB disk drives -- 2.7.3 Disk speed (RPM) -- 2.7.4 Disk Magic examples using 15K rpm and 10K rpm disk drives -- 2.8 RAID implementation -- 2.8.1 RAID Arrays -- 2.8.2 RAID 5 array -- 2.8.3 RAID 10 array -- 2.8.4 Combination of RAID 5 and RAID 10 arrays -- 2.8.5 RAID 5 versus RAID 10 performance -- 2.9 SBOD (Switched Bunch of Disks) connection -- 2.9.1 Standard storage subsystem FC-AL problem -- 2.9.2 Switched FC-AL advantages -- 2.9.3 DS6000 switched FC-AL implementation -- 2.10 Host adapter -- 2.10.1 Host adapter configuration -- 2.10.2 FCP attachment -- 2.10.3 FICON attachment -- 2.10.4 Preferred Path -- 2.11 Tools to aid in hardware planning -- 2.11.1 Whitepapers -- 2.11.2 Disk Magic -- 2.11.3 Capacity Magic -- Chapter 3. Logical configuration planning -- 3.1 Principles for performance optimization: balance, isolation and spread -- 3.1.1 Isolation -- 3.1.2 Resource sharing -- 3.1.3 Spreading -- 3.1.4 Using isolation, resource-sharing and spreading to optimize the DS6000 performance -- 3.2 Isolation requirements -- 3.2.1 Review the application workload characteristics to determine the isolation requirements -- 3.3 Plan assignment of DS6000 hardware resources to workloads -- 3.3.1 Plan DS6000 hardware resources for isolated workloads -- 3.3.2 Plan DS6000 hardware resources for resource-sharing workloads -- 3.3.3 Spread volumes and host connections across available hardware -- 3.4 Logical configuration - components and terminology -- 3.5 Configuring for performance -- 3.5.1 Mixing drive geometries -- 3.5.2 Mixing open and zSeries logical disks -- 3.5.3 Arrays and Array Sites -- 3.5.4 Select a Rank format -- 3.5.5 Extent Pool implications -- 3.5.6 Number of Ranks in an Extent Pool -- 3.5.7 LSS design -- 3.5.8 Preferred paths -- 3.6 Performance and sizing considerations.

3.6.1 Workload characteristics -- 3.6.2 Data placement in the DS6000 -- 3.6.3 Open systems LVM striping -- 3.7 .Performance and sizing considerations for z/OS -- 3.7.1 Performance potential in z/OS environments -- 3.8 Logical disks - number and size -- 3.9 Logical disk sizes - general considerations -- 3.9.1 Future requirements -- 3.9.2 Maximum number of devices -- 3.10 Configuring I/O ports -- 3.10.1 Multiple host attachment -- Chapter 4. Planning and monitoring tools -- 4.1 Disk Magic -- 4.1.1 Overview and characteristics -- 4.1.2 Output information -- 4.1.3 Disk Magic modeling -- 4.1.4 Disk Magic for zSeries -- 4.1.5 Disk Magic for open systems -- 4.1.6 Workload growth projection -- 4.1.7 Input data needed for DIsk Magic study -- 4.2 Capacity Magic -- 4.2.1 Overview and features -- 4.2.2 Wizard -- 4.2.3 Graphical interface -- 4.2.4 Reports -- 4.2.5 Examples -- 4.3 IBM TotalStorage Productivity Center for Disk -- 4.3.1 IBM TotalStorage Productivity Center -- 4.3.2 IBM TotalStorage Productivity Center for Disk -- 4.3.3 Operation characteristics -- 4.3.4 Using IBM TotalStorage Productivity Center for Disk -- 4.3.5 Exploiting gauges -- 4.3.6 Interpreting the DS6000 performance -- 4.3.7 Performance gauge - considerations -- 4.3.8 IBM TotalStorage Productivity Center for Disk and other tools -- 4.3.9 IBM TotalStorage Productivity Center for Disk in mixed environment -- 4.4 SAN statistics -- 4.5 Monitoring performance through a SAN switch or director -- Chapter 5. Host attachment -- 5.1 DS6000 host attachment -- 5.1.1 Attaching to open systems hosts -- 5.1.2 FICON-attached S/390 and zSeries hosts -- 5.1.3 Example of host attachments -- 5.2 Multipathing -- 5.3 FICON -- 5.4 Fibre Channel -- 5.4.1 Supported Fibre Channel attached hosts -- 5.4.2 Fibre Channel topologies -- 5.5 SAN implementations -- 5.5.1 Description and characteristics of a SAN.

5.5.2 Benefits of a SAN -- 5.5.3 SAN cabling for availability and performance -- 5.5.4 Importance of establishing zones -- 5.5.5 LUN masking -- 5.5.6 Configuring logical disks in a SAN -- 5.6 Subsystem Device Driver (SDD) - multipathing -- 5.6.1 SDD load balancing -- 5.6.2 Concurrent LMC load -- 5.6.3 Single path mode -- 5.6.4 Single FC adapter with multiple paths -- 5.6.5 Path failover and online recovery -- 5.6.6 Using SDDPCM on an AIX host system -- 5.6.7 SDD datapath command -- Chapter 6. IBM TotalStorage SAN Volume Controller attachment -- 6.1 IBM TotalStorage SAN Volume Controller -- 6.1.1 IBM TotalStorage SAN Volume Controller concepts -- 6.1.2 SAN Volume Controller multipathing -- 6.1.3 Copy Services -- 6.1.4 SAN Volume Controller performance considerations -- 6.2 DS6000 performance considerations -- 6.2.1 DS6000 Array -- 6.2.2 DS6000 Rank format -- 6.2.3 DS6000 Extent Pool implications -- 6.2.4 DS6000 volumes consideration -- 6.2.5 Volume assignment to SAN Volume Controller cluster -- 6.2.6 Number of paths to attach the DS6000 to SAN Volume Controller -- 6.3 Performance monitoring -- 6.3.1 IBM TotalStorage Productivity Center for Disk -- 6.3.2 Using IBM TotalStorage Productivity Center for Disk to monitor the SAN Volume Controller -- 6.4 Sharing the DS6000 between a host and the IBM SAN Volume Controller -- 6.4.1 Sharing the DS6000 between open systems server hosts and the IBM SAN Volume Controller -- 6.4.2 Sharing the DS6000 between iSeries host and the IBM SAN Volume Controller -- 6.4.3 Sharing the DS6000 between zSeries server host and the IBM SAN Volume Controller -- 6.5 Advanced functions for the DS6000 -- 6.6 Volume creation and deletion on the DS6000 -- 6.7 Configuration guidelines -- Chapter 7. Open systems servers - UNIX -- 7.1 UNIX performance monitoring and tuning -- 7.2 Planning and preparing UNIX servers for performance.

7.2.1 I/O balanced across Extent Pools -- 7.2.2 DS6000 LUN size -- 7.2.3 Document the LUN assignments -- 7.2.4 Multipathing considerations -- 7.2.5 System and adapter code level -- 7.3 Common UNIX performance monitoring tools -- 7.3.1 iostat -- 7.3.2 SAR -- 7.3.3 vmstat -- 7.4 AIX-specific I/O monitoring commands and tools -- 7.4.1 topas -- 7.4.2 nmon -- 7.4.3 filemon -- 7.4.4 lvmstat -- 7.5 HP-UX specific I/O monitoring commands -- 7.6 SDD commands for AIX, HP-UX, and Solaris -- 7.6.1 HP-UX SDD commands -- 7.6.2 Sun Solaris SDD commands -- 7.7 Testing and verifying DS6000 storage -- 7.7.1 Using the dd command to test sequential Rank reads and writes -- 7.7.2 Verifying your system -- 7.8 Volume groups, logical volumes and file systems -- 7.8.1 Creating the volume group -- 7.8.2 Creating a logical volume -- 7.8.3 Creating the file system -- 7.9 Operating system tuning -- 7.9.1 AIX operating system tuning (JFS and JFS2) -- 7.9.2 HP-UX OS tuning for sequential I/O -- 7.9.3 Sun Solaris OS tuning for sequential I/O -- Chapter 8. Open system servers - Linux for xSeries -- 8.1 Supported Linux distributions -- 8.2 Introduction to Linux OS components -- 8.2.1 Understanding and tuning virtual memory -- 8.2.2 Understanding and tuning the swap partition -- 8.2.3 Understanding and tuning the daemons -- 8.2.4 Compiling the kernel -- 8.2.5 Changing kernel parameters -- 8.2.6 Kernel parameters -- 8.2.7 Understanding and tuning the file systems -- 8.2.8 Tuning TCP window size -- 8.3 Linux monitoring tools -- 8.3.1 uptime -- 8.3.2 dmesg -- 8.3.3 top -- 8.3.4 iostat -- 8.3.5 vmstat -- 8.3.6 sar -- 8.3.7 isag -- 8.3.8 GKrellM -- 8.3.9 KDE System Guard -- 8.4 Host bus adapter (HBA) settings -- 8.5 Logical Volume Manager for Linux (LVM) -- 8.5.1 Implementation -- 8.5.2 Performance management -- 8.6 Bonnie -- 8.6.1 Benchmarks -- 8.6.2 Downloading -- 8.7 Bonnie++.

8.8 Disk bottlenecks.