Front cover -- Contents -- Figures -- Tables -- Notices -- Trademarks -- Preface -- The team that wrote this redbook -- Become a published author -- Comments welcome -- Chapter 1. ESS Model 800 characteristics -- 1.1 The IBM TotalStorage Enterprise Storage Server -- 1.2 IBM TotalStorage Enterprise Storage Server Model 800 -- 1.2.1 Benefits -- 1.3 Storage consolidation -- 1.4 Performance -- 1.4.1 Third-generation hardware - ESS Model 800 -- 1.4.2 Efficient cache management and powerful back-end -- 1.4.3 Sysplex I/O management -- 1.4.4 Parallel Access Volume (PAV) and Multiple Allegiance -- 1.4.5 I/O load balancing -- 1.4.6 2 Gb Fibre Channel/FICON host adapters -- 1.4.7 64-bit ESCON host adapters -- 1.5 Data protection and availability -- 1.5.1 Fault-tolerant design -- 1.5.2 RAID-5 or RAID-10 data protection -- 1.5.3 Remote copy functions -- 1.5.4 Point-in-Time Copy function -- 1.6 Storage Area Network (SAN) -- Chapter 2. Hardware configuration planning -- 2.1 Rules of thumb and benchmarks -- 2.2 Understanding your workload characteristics -- 2.3 ESS Model 800 major hardware components -- 2.4 ESS Processors -- 2.4.1 Standard and Turbo options -- 2.4.2 Choosing the processor option -- 2.5 Cache and NVS -- 2.5.1 Cache -- 2.5.2 Non-volatile storage (NVS) -- 2.5.3 Cache algorithms -- 2.5.4 Read operations -- 2.5.5 Write operations -- 2.5.6 Sequential read operations -- 2.5.7 Sequential write operations -- 2.5.8 Choosing the cache size -- 2.6 ESS disks -- 2.6.1 ESS disk capacity -- 2.6.2 Disk eight-packs -- 2.6.3 Disk eight-pack capacity -- 2.6.4 Disk eight-pack intermixing -- 2.6.5 Disk conversions -- 2.6.6 Step Ahead option -- 2.7 Choosing the ESS disks -- 2.7.1 Disk capacity -- 2.7.2 Examples using 145.6 GB disk drives -- 2.7.3 Disk speed (RPM) -- 2.7.4 Examples using 15 Krpm and 10 Krpm disk drives -- 2.8 RAID implementation -- 2.8.1 RAID ranks.

2.8.2 RAID-5 rank -- 2.8.3 RAID-10 rank -- 2.8.4 Combination of RAID-5 and RAID-10 ranks -- 2.9 Host adapters -- 2.9.1 ESCON attachment -- 2.9.2 SCSI attachment -- 2.9.3 FCP attachment -- 2.9.4 FICON attachment -- 2.9.5 Host adapters-server attachment -- 2.10 Host adapters configuration -- 2.10.1 ESCON and FICON attachment -- 2.10.2 SCSI attachment -- 2.10.3 FCP attachment -- 2.10.4 FICON attachment -- Chapter 3. Logical configuration planning -- 3.1 ESS logical configuration - Components and terminology -- 3.1.1 Eight-packs and disk drives -- 3.1.2 SSA device adapters -- 3.1.3 Arrays, ranks, and disk groups -- 3.1.4 ESS storage allocation - Logical disks -- 3.1.5 Fixed Block and count-key data -- 3.1.6 Logical subsystems (LSSs) -- 3.2 Optimizing storage allocation -- 3.2.1 Minimizing number of spares -- 3.2.2 Balancing logical subsystems -- 3.3 Logical disks - Number and size -- 3.4 Logical disk sizes - General considerations -- 3.4.1 Future requirements -- 3.4.2 Maximum number of devices -- 3.4.3 System management -- 3.5 Logical disk sizes - LVM considerations -- 3.6 Logical disk sizes - zSeries -- 3.7 Logical disk sizes - iSeries -- 3.7.1 SCSI attachment -- 3.7.2 FCP attachment -- 3.8 Placement of logical disks -- 3.8.1 RAID configuration -- 3.8.2 Logical disk placement -- 3.8.3 Creating logical disks on different disk groups -- 3.9 RAID-5 vs. RAID-10 considerations -- 3.10 Open systems striping -- 3.10.1 Single rank file systems -- 3.10.2 Striping for high sequential I/O -- 3.10.3 Spread vs. stripe -- 3.10.4 Striped file system -- 3.10.5 Striping logical volumes - Trade-offs -- 3.10.6 Hardware and operating system considerations -- 3.11 Logical configuration - Checklists and worksheets -- Chapter 4. Planning and monitoring tools -- 4.1 Disk Magic -- 4.1.1 Overview and characteristics -- 4.1.2 Output information -- 4.1.3 How Disk Magic works.

4.1.4 Input dialogs -- 4.1.5 Output reports -- 4.2 Sequential Sizer -- 4.2.1 Overview and characteristics -- 4.2.2 Spread sheets -- 4.2.3 Input data -- 4.2.4 When to use Sequential Sizer -- 4.3 Capacity Magic -- 4.3.1 Overview and characteristics -- 4.3.2 Input panels -- 4.3.3 Examples -- 4.3.4 Input data -- 4.3.5 When to use Capacity Magic -- 4.4 IBM TotalStorage Expert -- 4.4.1 Overview and characteristics -- 4.4.2 Performance management for your ESS -- 4.4.3 Operation characteristics -- 4.4.4 Using the IBM TotalStorage Expert -- 4.4.5 Performance report types -- 4.4.6 Viewing performance management reports -- 4.4.7 Interpreting the ESS performance reports -- 4.4.8 Performance summary reports - Considerations -- 4.4.9 Viewing performance detail reports -- 4.4.10 Performance detail reports - Considerations -- 4.5 TotalStorage Expert performance reports and other tools -- 4.5.1 Using the ESS reports under UNIX systems -- 4.5.2 Using the ESS reports under Windows 2000 systems -- 4.5.3 Using the ESS reports in an S/390 environment -- 4.5.4 IBM TotalStorage Expert and mixed operating systems -- Chapter 5. Host attachment -- 5.1 Attachment architectures -- 5.2 Multipathing -- 5.3 ESCON -- 5.4 FICON -- 5.4.1 FICON benefits -- 5.4.2 FICON recommendations -- 5.5 SCSI -- 5.5.1 Supported SCSI attached hosts -- 5.5.2 SCSI attachment recommendations -- 5.6 Fibre Channel -- 5.6.1 Supported Fibre Channel attached hosts -- 5.6.2 Fibre Channel topologies -- 5.7 SAN implementations -- 5.7.1 Description and characteristics of a SAN -- 5.7.2 Benefits of a SAN -- 5.7.3 SAN cabling for availability and performance -- 5.7.4 Tasks for a SAN implementation -- 5.7.5 Importance of establishing zones -- 5.7.6 LUN masking -- 5.7.7 Configuring logical disks in a SAN -- 5.8 Subsystem Device Drivers (SDD) - Multipathing -- 5.8.1 SDD load balancing -- 5.8.2 Concurrent LIC load.

5.8.3 Single path mode -- 5.8.4 Single FC adapter with multiple paths -- 5.8.5 Path failover and online recovery -- 5.8.6 SDD datapath command -- 5.9 ESSUTIL utility package -- 5.9.1 Using ESSUTIL for performance enhancement -- 5.9.2 ESS utilities supported servers -- 5.9.3 Implementing and using the ESS utilities -- 5.9.4 Mapping ranks to ESS Specialist disk groups -- Chapter 6. Open systems servers - UNIX -- 6.1 UNIX performance monitoring and tuning -- 6.2 Planning and preparing UNIX servers for performance -- 6.2.1 I/O balanced across ESS components -- 6.2.2 Number of paths from host to ESS -- 6.2.3 ESS LUN size -- 6.2.4 System and adapter code level -- 6.2.5 Subsystem Device Driver (SDD) -- 6.2.6 ESSUTIL package -- 6.3 Common UNIX performance monitoring tools -- 6.3.1 IOSTAT -- 6.3.2 SAR -- 6.3.3 VMSTAT -- 6.4 SDD commands for AIX, HP-UX, and Sun Solaris -- 6.4.1 AIX SDD commands -- 6.4.2 HP-UX SDD commands -- 6.4.3 Sun Solaris SDD commands -- 6.5 AIX-specific I/O monitoring commands -- 6.5.1 TOPAS -- 6.5.2 NMON -- 6.5.3 FILEMON -- 6.5.4 LVMSTAT -- 6.6 HP-UX specific I/O monitoring commands -- 6.7 Viewing iostats based on vpaths - vpath_iostat script -- 6.8 Viewing iostats based on ranks - ess_iostat script -- 6.9 Measuring ESS sequential I/O speeds -- 6.9.1 Using DD command to test rank read speeds -- 6.9.2 Testing file system sequential write/read speeds -- 6.10 Implementing striped file systems -- 6.10.1 Creating striped file systems -- 6.10.2 Example of striping on an AIX host -- 6.11 Operating system tuning for sequential I/O -- 6.11.1 AIX OS tuning for sequential I/O -- 6.11.2 HP-UX OS tuning for sequential I/O -- 6.11.3 Sun Solaris OS tuning for sequential I/O -- Chapter 7. Open system servers - Linux for xSeries™ -- 7.1 Supported Linux distributions -- 7.2 Introduction to Linux O/S components.

7.2.1 Understanding and tuning virtual memory -- 7.2.2 Understanding and tuning the swap partition -- 7.2.3 Understanding and tuning the daemons -- 7.2.4 Tuning the GUI -- 7.2.5 Compiling the kernel -- 7.2.6 Understanding and tuning the file systems -- 7.2.7 Tuning TCP window size -- 7.3 Linux monitoring tools -- 7.3.1 uptime -- 7.3.2 dmesg -- 7.3.3 top -- 7.3.4 iostat -- 7.3.5 vmstat -- 7.3.6 sar -- 7.3.7 isag -- 7.3.8 GKrellM -- 7.3.9 KDE System Guard -- 7.4 Logical Volume Manager for Linux (LVM) -- 7.4.1 Implementation -- 7.4.2 Performance Management -- 7.4.3 Hardware RAID -- 7.5 Swapping -- 7.6 Virtual memory -- 7.7 Bonnie -- 7.7.1 Benchmarks -- 7.7.2 Downloading -- 7.8 Bonnie++ -- 7.9 Disk bottlenecks -- Chapter 8. Open system servers - Intel based -- 8.1 Host system performance -- 8.2 Tuning Windows 2000 and NT systems -- 8.2.1 Foreground and background priorities -- 8.2.2 Virtual memory -- 8.2.3 Windows paging optimization -- 8.2.4 System cache tuning -- 8.2.5 Disabling unnecessary services -- 8.2.6 File system overview -- 8.2.7 Disk partitioning -- 8.3 Tools for Windows 2000 and NT -- 8.4 Windows 2000 and NT Performance console -- 8.4.1 Key objects and counters -- 8.4.2 Performance console output information -- 8.4.3 Performance Logs and Alerts -- 8.4.4 Monitoring disk counters -- 8.4.5 Monitoring disk performance -- 8.4.6 Disk bottlenecks -- 8.4.7 Performance reports -- 8.5 Task Manager -- 8.5.1 Starting Task Manager -- 8.6 Iometer -- 8.7 Performance configuration options -- 8.8 General considerations for Windows servers -- 8.9 Windows NT registry options -- 8.9.1 Speed up file system caching -- 8.9.2 Improve memory utilization of file system cache -- 8.10 Subsystem Device Driver (SDD) -- 8.11 Novell NetWare monitoring tools -- 8.12 NetWare Remote Manager -- 8.12.1 Accessing NRM -- 8.12.2 Volumes link -- 8.12.3 Disk/LAN adapters link.

8.13 Monitor.