Replacing a power supply
You can replace a power supply unit (PSU) as a hot-swappable server component. The
server can operate on a single PSU if necessary, making it possible to replace a failed
PSU without shutting down the server. If a PSU fails, it must be replaced as quickly as
possible because operating on a single PSU means that there is no redundancy in that
area, increasing the risk of an interruption in service to clients.
LED indicators on each PSU indicate the PSU status.
Note: Refer to the section on
for more information.
Procedure
1. Remove the power cord from the PSU.
2. Move the retaining latch to the right (you may hear a slight click if the PSU moves
when the latch disengages).
3. Using the handle on the PSU, pull the PSU out from the back of the server until you
can completely remove the PSU from the chassis.
4. Insert the replacement PSU. The retention latch should click into position all the way
to the left when the PSU is fully inserted.
If the PSU that is not being replaced is receiving mains power when the replacement
PSU is fitted, the fan on the replacement PSU becomes active.
5. Connect the power cord to the back of the PSU.
The PSU should start as soon as the power connection is made. If the PSU does not
start immediately, make sure the main power circuit is live and that the other end of
the power cable is connected to a live outlet.
Replacing a power supply
Chapter 5: Replacing server components
Hitachi NAS Platform Series 5000 Hardware Reference
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