Power Supply Assembly Task Guide

This section contains a guide to complete, detailed steps for installing or replacing power supply assemblies when the chassis is running (hot-swap) or must be powered off (cold-swap). References are provided for more detailed information.
Note: Depending on the blade configuration of the chassis and the number of power supplies installed, the chassis may be able to continue operating while you replace a power supply.

See "Power Supply Specifications (Per PSU)" and "Power Supply Requirements" in the Technical Specifications for the minimum power supplies required for AC low-voltage and high-voltage line operation, redundancy in power supply failure, and other specifications. If there is insufficient power, the chassis starts powering down blades until the power demand can be met.

Replacing a Power Supply Assembly (Hot-Swap)

If your chassis is up and running, but a power supply has failed, complete the following steps:
Note:

Removing more than one power supply could result in insufficient system power, which could cause some blades to power down. Ensure that there is an adequate number of active power supply assemblies when removing a single power unit during hot-swapping.

  1. Unplug the power cable from failed power supply assembly and loosen the captive screw.
  2. Remove the power supply assembly.
  3. Insert the new power supply assembly and securely tighten the captive screw.
  4. Plug the power cord into the new power supply assembly from the power source.
  5. Verify the power supply assembly status LED.

Replacing or Installing a Power Supply Assembly (Cold-Install or Cold-Swap)

If your chassis is up and running, but you want to power down the chassis to install additional power supply assemblies or replace failed power supply assemblies, complete the following steps:

  1. Shut down the system using the sysShutdown command.
  2. Unplug the power cords from all power supply assemblies.
  3. If adding a power supply assembly, remove the filler panel from the empty power supply assembly slot.
  4. Install or replace power supply assemblies and securely tighten the captive screw.
  5. Plug the power cords into all power supply assemblies from the power sources.
  6. Verify the power supply assembly status LEDs.