Removing a power supply: 2145-DH8

You can remove either of the two 750 watts 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 you remove 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)
Multiple plugs: first set
 or
Multiple plugs: second set
 or
Multiple plugs: third set

Ensure that you are aware of the procedures for handling static-sensitive devices before you remove the power supply unit (PSU).

Procedure

  1. Read the safety information in Preparing to remove and replace parts.
  2. If only one power supply is installed, turn off the node and peripheral devices and disconnect all power cords.
  3. If you must remove PSU 2, first put the node into service state.
    Attention: On SAN Volume Controller 2145-DH8 or FlashSystem V9000 control enclosure AC2, if the error is displayed for the top power supply unit (PSU 2), 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. After the service action is complete, run the satask stopservice command so that the node can rejoin the system.

    This note does not apply to SAN Volume Controller 2145-DH8 or FlashSystem V9000 control enclosure AC2 manufactured on or after 1 April 2015, with battery backplane FRU part number 00RY001 and battery backplane voltage sense cable FRU part number 00RY335.

    It also does not apply to any version of FlashSystem 900.

  4. 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.
  5. 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
    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
  6. 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.