HP Surestore 64 FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availabil - Page 103
Fabric performance tuning, Interswitch Link, Fabric Connection
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Planning Considerations for Fibre Channel Topologies Figure 44 illustrates performance tuning for a simple fabric using appropriate ISL connectivity, device locality, and fan-out regions for device connectivity. Tier 2 Storage 11 to 1 Fan-Out Region 11,000 IOPS 6 to 1 Fan-Out Region 9,000 IOPS 3 to 1 Fan-Out Region 6,000 IOPS 10/100 RST TM PWR ERR 10/100 RST TM PWR ERR TM 6,000 IOPS 10/100 RST TM PWR ERR Local Tier 1 Devices 2,000 IOPS 40 Mbps 2,000 IOPS 10/100 RST 31 29 27 25 23 21 19 17 TM 30 28 26 24 15 13 11 9 22 20 18 16 14 12 10 7 5 3 1 8 6 4 2 0 PWR ERR 11 Total Servers 10 MBps 1,000 IOPS 10/100 RST TM PWR ERR 6 Total Servers 20 MBps 1,500 IOPS 10/100 RST TM PWR ERR 3 Total Servers 30 Mbps 2,000 IOPS Tier 2 Servers Interswitch Link Fabric Connection Figure 44: Fabric performance tuning ■ Local Tier 1 devices - A video server application with I/O capabilities of 40 MBps and 2,000 IOPS must be connected to the fabric. Because the application is critical and high bandwidth (in excess of 35 MBps), the server and associated storage are directly attached to the core director as Tier 1 devices. No ISLs are used for server-to-storage connectivity. SAN High Availability Planning Guide 103