HP StorageWorks 2/140 FW 08.01.00 McDATA Products in a SAN Environment Plannin - Page 120

Planning Considerations for Fibre Channel Topologies 3 Tier 2 Storage 11 to 1 Fan-Out Region 6 to 1 Fan-Out Region 11,000 IOPS 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 TM 21 19 17 15 30 28 26 24 22 20 18 13 11 9 7 5 3 1 16 14 12 10 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 Tier 2 Servers Interswitch Link Fabric Connection 10/100 RST TM PWR ERR 3 Total Servers 30 MBps 2,000 IOPS Figure 3-15 Fabric Performance Tuning The fabric is divided into four performance regions as follows: • 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. 3-36 McDATA Products in a SAN Environment - Planning Manual