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

Replacing a DIMM

You must replace a DIMM in the controller module when your system registers an increasing number of
correctable error correction codes (ECC); failure to do so causes a system panic.
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
All other components in the system must be functioning properly; if not, you must contact technical support.
You must replace the failed component with a replacement FRU component you received from your
provider.

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)

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:
ThinkSystem DM5100F Hardware Installation and Maintenance Guide
42
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.