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DANGER
Do not open or service any power supply assembly. (D005a)
Removing a SAN Volume Controller 2145-CF8 power supply
You can remove and replace either of the two 675-watt hot-swap redundant power supplies in the SAN
Volume Controller 2145-CF8. These redundant power supplies operate in parallel, one continuing to
power the node if the other fails.
DANGER
Multiple power cords. The product might be equipped with multiple power cords. To remove all
hazardous voltages, disconnect all power cords.
Ensure that you are aware of the procedures for handling static-sensitive devices before you remove the
power supply.
This service action requires you to:
v Optionally, turn the node off.
v Disconnect the power cable on each power supply that you are removing.
Important: You can hot swap the power supply. However, using MAP 5350 to power off the node
through proven methods avoids risking an abrupt power failure on the node, which avoids the possible
corruption of data.
To remove the SAN Volume Controller 2145-CF8 power supply, perform the following steps:
1. Read the safety information to which "Preparing to remove and replace parts" on page 20 refers.
2. Optional: Follow the procedure in MAP 5350 in the IBM System Storage SAN Volume Controller 2145
Troubleshooting Guide to verify that the node data is mirrored and synchronized, and that there are no
dependent volumes before turning off the node.
Important: If you decide to hot swap the power supply, use MAP 5350 to make all of the necessary
checks that ensure that the partner node in the I/O group can take over all I/O group operations, if
necessary, and that there are no dependent VDisks on the node. With the partner node available and
no dependent VDisks on the node, you do not lose access to data if this node accidentally powers off.
3. Pull back the cable-management arm if you are working from the rear of the rack, or slide the node
out of the rack to the fully extended rail position if you are working from the front.
4. Optional: Wait for the node to turn off completely if you are not hot-swapping the drive.
5. Remove the cable-retention bracket and the power cord from the power supply that you are replacing,
as described in "Removing the SAN Volume Controller 2145-CF8 cable-retention brackets" on page 29.
6. To remove the power supply, press and hold the release tab 2 to the left. Grasp the handle 3 on
the rear of the power supply, as shown in Figure 150 on page 142, and pull the power supply out of
the node.
Chapter 2. Removing and replacing parts
141
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