IBM System Storage DS3300, Installation, User'S, And Maintenance Manual

Page: 97 / 140

Replacing a power supply
(L003)
1 2
or
!
1
2
The power-supply unit is a component that includes a 530-watt power supply and
two fans. The power-supply units provide power and cooling for the DS3300. The
power-supply units circulate air from the front to the rear of the storage subsystem.
The power-supply units are customer replaceable units (CRUs) and do not require
preventive maintenance. Use only the supported power-supply units for the specific
storage subsystem.
Each power supply has a built-in sensor that detects the following conditions:
v
Over-voltage
v Over-current
v
Overheated power supply
If any of these conditions occurs, one or both power supplies will shut down. If the
power remains off (does not automatically restart), make sure that the environment
is optimal (no overheating has occurred, all electrical receptacles are working, and
so on). For more information, see “Restoring power after an unexpected shutdown”
on page 56.
Chapter 5. Replacing components
79