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IBM TotalStorage SAN Volume Controller: Installation Guide
Figure 6. Uninterruptible power supply 5125
Figure 7. Uninterruptible power supply 5115
Note: The SAN Volume Controller UPS is an integral part of the SAN Volume
Controller solution. It maintains continuous SAN Volume Controller specific
communications with its attached SAN Volume Controller nodes. The SAN
Volume Controller cannot operate without the UPS. The SAN Volume
Controller UPS must be used in accordance with documented guidelines and
procedures and must not power any equipment other than SAN Volume
Controller nodes.
To provide full redundancy and concurrent maintenance, the SAN Volume Controller
must be installed in pairs. Each SAN Volume Controller of a pair must be connected
to a different UPS. Each UPS 5125 can support up to two SAN Volume Controller
nodes. The UPS 5115 can support one SAN Volume Controller node. It is also
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