FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availability Planning Guide (AA-RS2DC-TE, June 2003)

Planning Considerations for Fibre Channel Topologies
103SAN High Availability Planning Guide
Figure 44 illustrates performance tuning for a simple fabric using appropriate ISL
connectivity, device locality, and fan-out regions for device connectivity.
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.
Interswitch Link
Fabric Connection
6,000 IOPS
Tier 2 Storage
P
W
R
E
R
R
1
0
2
4
6
8
1
0
1
2
1
4
1
6
1
8
2
0
2
2
2
4
2
6
2
8
3
0
3
5
7
9
1
1
1
3
1
5
1
7
1
9
2
1
2
3
2
5
2
7
2
9
3
1
R
S
T
1
0
/
1
0
0
T
M
ER
R
P
W
R
R
S
T
1
0
/
1
0
0
T
M
E
R
R
P
W
R
R
S
T
1
0
/
1
0
0
T
M
E
R
R
P
W
R
R
S
T
1
0
/
1
0
0
T
M
ER
R
P
W
R
R
S
T
1
0
/
1
0
0
T
M
E
R
R
P
W
R
R
S
T
1
0
/
1
0
0
T
M
30 Mbps
2,000 IOPS
20 MBps
1,500 IOPS
10 MBps
1,000 IOPS
11 to 1 Fan-Out Region
11,000 IOPS
11 Total
Servers
6 Total
Servers
3 Total
Servers
Local Tier 1 Devices
40 Mbps
2,000 IOPS
2,000 IOPS
T
M
6 to 1 Fan-Out Region
9,000 IOPS
3 to 1 Fan-Out Region
6,000 IOPS
Tier 2 Servers