IBM TotalStorage SAN Volume Controller, Installation Manual

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To turn on the power, press and hold the on button until you hear a beep
(approximately one second). The mode indicator stops flashing, and the load-level
indicators display the percentage of load that is being applied to the UPS 5125.
Off button
The off button turns off the main power to the uninterruptible power supply (UPS)
5125.
Attention: Never use the off button unless you are specifically directed to in the
instructions that are given in the publications for the SAN Volume Controller. If you
press it at any other time, you might lose data in the cluster if the other UPS 5125
fails.
To turn off the power, press and hold the off button until the long beep stops
(approximately five seconds). The mode indicator starts to flash, and the UPS 5125
remains in standby mode until you disconnect the UPS 5125 from the main power
outlet.
Load-level indicators
The load-level indicators show the percentage of uninterruptible power supply
(UPS) 5125 capacity that the SAN Volume Controller is using.
When all the indicators are lit, the power requirements of the SAN Volume
Controller have exceeded the capacity of the UPS 5125.
Site wiring fault indicators
The site wiring fault indicator on the uninterruptible power supply (UPS) 5125 shows
that either a ground wire connection does not exist or the live and neutral wires are
reversed in the input power connection.
The site wiring fault indicator is located on the front panel of the UPS 5125.
Battery service indicator
The battery service indicator shows that the charge in the battery has become low
while the uninterruptible power supply (UPS) 5125 is in battery mode.
The battery service indicator is located on the front panel of the UPS 5125. The
alarm continues to beep once every five seconds. The application programs
immediately complete and save the work to prevent loss of data. If the UPS 5125
shuts down, it automatically restarts when the main power returns.
Battery mode indicator
The battery mode indicator shows that the uninterruptible power supply (UPS) 5125
is operating on batteries.
The battery mode indicator comes on when the main power source fails and the
UPS 5125 is running on battery power. The alarm beeps once every five seconds.
When main power returns, the UPS 5125 returns to normal mode, and the battery
recharges. The battery mode indicator goes out, and the alarm stops.
General alarm indicator
The general alarm indicator on the uninterruptible power supply (UPS) 5125 turns
on when a power or temperature problem occurs.
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IBM TotalStorage SAN Volume Controller: Installation Guide