Shutting Down The Impaired Controller; Replacing The Controller Module Hardware - Lenovo ThinkSystem DM5100F Hardware Installation And Maintenance Manual

Shutting down the impaired controller

You can shut down or take over the impaired controller using different procedures, depending on the storage
system hardware configuration.
Shutting down the impaired node
To shut down the impaired node, you must determine the status of the node and, if necessary, take over the
node so that the healthy node continues to serve data from the impaired node storage.
B B e e f f o o r r e e y y o o u u b b e e g g i i n n
• If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a
healthy node shows false for eligibility and health, you must correct the issue before shutting down the
impaired node.
ONTAP 9 System Administration Reference
P P r r o o c c e e d d u u r r e e
Step 1. If the impaired node is part of an HA pair, disable automatic giveback from the console of the
healthy node:
storage failover modify -node local -auto-giveback false
Step 2. Take the impaired node to the LOADER prompt:
I I f f t t h h e e i i m m p p a a i i r r e e d d n n o o d d e e i i s s d d i i s s p p l l a a y y i i n n g g . . . . . .
The LOADER prompt
Waiting for giveback...
System prompt or password prompt (enter
system password)

Replacing the controller module hardware

To replace the controller module hardware, you must remove the impaired node, move FRU components to
the replacement controller module, install the replacement controller module in the chassis, and then boot
the system to Maintenance mode.
Removing the controller module
You must remove the controller module from the chassis when you replace a component inside the controller
module.
B B e e f f o o r r e e y y o o u u b b e e g g i i n n
Make sure that you label the cables so that you know where they came from.
A A b b o o u u t t t t h h i i s s t t a a s s k k
A video for this task is available at:
• YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C8THdP1nmPF25RWwGRta3v
P P r r o o c c e e d d u u r r e e
Step 1. If you are not already grounded, properly ground yourself.
Step 2. Unplug the controller module power supplies from the source.
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T T h h e e n n . . . . . .
Go to the next step.
Press Ctrl-C, and then respond y.
Take over or halt the impaired node:
storage failover takeover -ofnode impaired_
node_name
When the impaired node shows Waiting for
giveback..., press Ctrl-C, and then respond y.