IBM TotalStorage, Installation Manual

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electrical input power source (if possible) to reduce the chance of input
power failure at both uninterruptible power supplies.
The SAN Volume Controller software determines whether the input voltage to the
uninterruptible power supply is within range and sets an appropriate voltage
alarm range on the uninterruptible power supply. The software continues to
re-check the input voltage every few minutes; if it changes substantially but
remains within the permitted range, the alarm limits are readjusted.
Prerequisites:
Before you begin this task, refer to the customer’s cable connection table in the
IBM TotalStorage SAN Volume Controller: Planning Guide to identify the
uninterruptible power supply to which this SAN Volume Controller is to be
connected.
Steps:
Perform the following steps to connect the SAN Volume Controller to the
uninterruptible power supply.
1. At the back of the SAN Volume Controller, plug a power cable into the socket
1
(see Figure 33).
2. Plug the serial cable of the power cable assembly into the serial socket
2
.
3. DANGER
You have already switched on the uninterruptible power supply. The
output sockets of the uninterruptible power supply are live.
Plug the free end of the SAN Volume Controller power cable into any vacant
output socket
3
on the uninterruptible power supply.
2
1
3
4
Figure 33. Connecting the SAN Volume Controller power cable to the uninterruptible power
supply
Chapter 4. Installing the uninterruptible power supply, the master console, and the SAN Volume Controller
31