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If any of these conditions occurs, one or both power supplies will shut down. All
power remains off until you cycle the power switches (turn the power switches off,
wait at least 30 seconds, then turn the power switches on). For more information,
see "Restoring power after an unexpected shutdown" on page 48 and "Restoring
power after an over-temperature shutdown" on page 49.
The power supplies are customer replaceable units (CRUs) and do not require
preventive maintenance.
v Always keep the power supplies in their proper places to maintain proper
v Use only the supported power supplies for your specific storage server.
The power-supply controls on the rear of the storage server are shown in Figure 63.
Figure 63. Power supply controls
Levers
Power LED
Fault LEDs
AC power switches
AC power connectors
Strain-relief clamp
Removing a hot-swap power supply
Statement 8
controller-unit cooling.
Hot-swap power
Lever
Power LED
AC power
connector
Fault LED
Strain-
AC power
relief clamp
switch
Use these locking handles to remove or install a power supply.
These green LEDs light when the storage server is turned on and receiving
ac power.
These amber LEDs light if a power supply failure occurs or if the power
supply is turned off.
Use these switches to turn the power supplies on and off. You must turn on
both switches to take advantage of the redundant power supplies.
This connection is for the ac power cord.
Use this clamp to provide strain relief on the power cord.
supplies
Lever
AC power
AC power
Strain-
connector
relief clamp
Chapter 5. Installing and replacing components
Power LED
Fault LED
switch
83
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