Fabric Performance Tuning - McDATA StorageWorks 2/140 - Director Switch Planning Manual

Planning Considerations for Fibre Channel Topologies
3
McDATA Products in a SAN Environment - Planning Manual
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11 to 1 Fan-Out Region
11,000 IOPS
TM
PWR
ERR
6,000 IOPS
31
29 27 25
23 21 19 TM
30 17 15 13
28 26 24 11 9 7
22 20 18 5 3 1
16 14 12 PWR
10 8 6 ERR
4 2 0
11 Total
Servers
10 MBps
1,000 IOPS
Interswitch Link
Fabric Connection

Fabric Performance Tuning

Figure 3-15
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.
Tier 2 Storage
6 to 1 Fan-Out Region
9,000 IOPS
TM
PWR
ERR
Local Tier 1 Devices
2,000 IOPS
TM
PWR
ERR
6 Total
Servers
20 MBps
1,500 IOPS
Tier 2 Servers
3 to 1 Fan-Out Region
6,000 IOPS
TM
PWR
ERR
40 MBps
2,000 IOPS
TM
PWR ERR
3 Total
Servers
30 MBps
2,000 IOPS