What Next; How To Install A Power Supply - Sun Microsystems Fire V890 Service Manual

Caution – A power supply must always occupy each power supply bay. If a power
supply fails, you must leave the failed power supply in its bay until your are able to
install a functioning replacement power supply. A failed power supply still acts as
an air baffle channeling airflow to cool the bottom row of disk drives in the disk
cage. Replace the failed power supply as soon as possible to regain N+1 power
redundancy.

What Next

To replace the power supply, complete this task:
"How to Install a Power Supply" on page 160
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How to Install a Power Supply

If you are installing a redundant power supply, it is not necessary to shut down and
power off the system. For more information, see:
"About Power Supplies" on page 231
■
"About Hot-Pluggable and Hot-Swappable Components" on page 6
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Note – Unlike hot-pluggable devices, you can install or remove a power supply or
fan tray while the system is operating at the ok prompt. However, in the case of the
power supply, you must issue a reset-all command at the ok prompt in order for
the system to recognize the change the next time the operating system is booted.
Note – After removing a power supply during a hot-plug operation, wait for an
acknowledgement message on the system console before installing a new supply;
otherwise, the environmental monitoring software will not recognize the new device
and false error conditions will result.
Note – Use only Sun Fire V890 200-240 VAC power supplies in the Sun Fire V890
system.
160 Sun Fire V890 Server Service Manual • October 2005