You can remove either of the two 750 watt
hot-swap redundant power supplies in the SAN Volume Controller
2145-DH8 node.
Redundant power supplies operate in parallel, one continuing to power
the node if the other fails. Due to a configuration limitation in
power supply unit 2 (PSU 2), you must put the node into service state
to halt I/O before removing PSU 2 during a service action.
Before you begin
DANGER
Multiple power cords. The product might be equipped with multiple
power cords. To remove all hazardous voltages, disconnect all power cords. (L003)
Ensure that you are aware of the procedures for handling
static-sensitive devices before you remove the power supply unit (PSU).
Procedure
- Read the safety information in Preparing to remove and replace parts.
- If only one power supply is installed, turn off the node
and peripheral devices and disconnect all power cords.
- If you must remove PSU 2, first put the node
into service state.
Attention: To avoid losing state and data from the node, use the
satask startservice command to put the node into service state so that it no
longer processes I/O. Then you can remove and replace the top power supply unit (PSU 2). This
precaution is due to a limitation in the power-supply configuration. Once the service action is
complete, run the satask stopservice command to let the node rejoin the system.
- If the node is in a rack, at the back of the server, pull
back the cable management arm to gain access to the rear of the server
and the power supply.
- Press and hold the release tab to the left; then grasp
the handle and pull the power supply out of the node, as shown in Figure 1.
Figure 1. Removing the SAN Volume Controller
2145-DH8 power
supply
- 1 Power supply 2
- 2 Power-supply release tab
- 3 Power-supply handle
- 4 Power supply 1
- If you are instructed to return the power supply, follow
all packaging instructions, and use any packaging materials for shipping
that are supplied to you.
