Replacing A Power Cooling Module; Removing A Pcm - Seagate RealStor 5005 Series Hardware Installation

Replacing a power cooling module

This section provides procedures for replacing a failed power cooling module (PCM). Illustrations in PCM replacement
procedures show rear panel views of the enclosure, with the PCM properly oriented for insertion into the rear panel of the
enclosure.
A single PCM is sufficient to maintain operation of the enclosure. You need not halt operations and completely power-off
the enclosure when replacing only one PCM; however, a complete orderly shutdown is required if replacing both units
simultaneously.
CAUTION: Do not remove the cover from the PCM due to danger from electric shock inside. Return the PCM to your
supplier for repair.
See CAUTION bullets regarding electrostatic discharge and anti-static protection on
TIP: The illustrations show PCM module replacement within the right slot as you view the enclosure rear panel. To
replace a PCM in the left slot, you would first rotate the module 180º about its longitudinal axis, so that it properly aligns
with its connectors on the back of the midplane. See also

Removing a PCM

CAUTION: Removing a power supply unit significantly disrupts the enclosure's airflow. Do not remove the PCM until
you have received the replacement module. It is important that all slots are filled when the enclosure is in operation.
Before removing the PCM, disconnect the power from the PCM by either the mains switch (where present) or by
physically removing the power source in order to ensure your system has warning of imminent power shutdown. A faulty
PCM must be replaced by a fully operational PCM within 24 hours. Ensure that you correctly identify the faulty PCM
before beginning the step procedure.
1. Stop all I/O from hosts to the enclosure. See also
TIP: This step is not required for hot-swapping. However, it is required when replacing both PCMs at once.
2. Use management software to shut down any other system components necessary.
TIP: This step is not required for hot-swapping. However, it is required when replacing both PCMs at once.
3. Switch off the faulty PCM, and disconnect the power supply cable.
4. If replacing a single PCM via hot-swap, proceed to
5. If replacing both PCMs, verify that the enclosure was shut down using management interfaces, and that the
enclosure is powered off.
6. Verify that the power cord is disconnected.
78 Module removal and replacement
Figure 9 (page 20).
"Stopping I/O" (page 88).
step 6.
page 77.