Swapping Out A Power Supply - Lenovo ThinkSystem DM3000 series Hardware Installation And Maintenance Manual

The confirmation message looks like the following:
Warning: Rebooting or halting node
"node_name" in an HA-enabled cluster may result in client disruption or data access
failure. To ensure continuity of service, use the "storage
failover takeover" command. Are you sure you want to halt node
"node_name"? {y|n}:
Attention: You must perform a clean system shutdown before replacing the chassis to avoid
losing unwritten data in the nonvolatile memory (NVMEM). If the NVMEM LED is flashing, there is
content in the NVMEM that has not been saved to disk. You need to reboot the controller and start
from the beginning of this procedure. If repeated attempts to cleanly shut down the controller fail,
be aware that you might lose any data that was not saved to disk.
Step 3. Where applicable, halt the second controller to avoid a possible quorum error message in an HA
pair configuration:: system node halt -node second_node_name -ignore-quorum-warnings true

Swapping out a power supply

Swapping out a power supply when replacing a chassis involves turning off, disconnecting, and removing
the power supply from the old chassis and installing and connecting it on the replacement chassis.
Step 1. If you are not already grounded, properly ground yourself.
Step 2. Turn off the power supply and disconnect the power cables:
a. Turn off the power switch on the power supply.
b. Open the power cable retainer, and then unplug the power cable from the power supply.
c. Unplug the power cable from the power source.
Step 3. Squeeze the latch on the power supply cam handle, and then open the cam handle to fully release
the power supply from the mid plane.
Step 4. Use the cam handle to slide the power supply out of the system.
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Chapter 5 Hardware replacement procedures
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