User`s guide

362 Implementing an Open IBM SAN
On the SSA side, there are a few options available. Each Router can have its
own SSA loop so that each one can support 64 SSA disks. In this way, storage
capacity is scalable, because it can be increased by adding more Routers. This
is shown in Figure 5-38.
Figure 5-38 Increasing storage capacity
The other option is to have each additional Router added to the same SSA loop.
Throughput to the SSA loop will increase, because each Router can access the
disks for multiple simultaneous operations. This configuration is shown in
Figure 5-39.
Figure 5-39 Increasing throughput
Server
Vicom SLIC
Router
SSA Disks
A1 A2
Fibre Channel
Vicom SLIC
Router
SSA Disks
A1
A2
Server
Vicom SLIC
Router
SSA Disks
A1 A2
Fibre Channel
Vicom SLIC
Router
SSA Disks
A1
A2