Note: This operation need to be performed when the impaired node shows "Waiting for
giveback...".
Step 4. If automatic giveback was disabled, reenable it: storage failover modify -node local -auto-giveback true
Replacing the real-time clock battery
You replace the real-time clock (RTC) battery in the controller module so that your system’s services and
applications that depend on accurate time synchronization continue to function.
• You can use this procedure with all versions of ONTAP supported by your system
• All other components in the system must be functioning properly; if not, you must contact technical
support.
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.
• 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
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:
If the impaired node is displaying... Then...
The LOADER prompt Go to the next step.
Waiting for giveback...
Press Ctrl-C, and then respond
y.
System prompt or password prompt (enter
system password)
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.
Removing the controller module
You must remove the controller module from the chassis when you replace a component inside the controller
module.
Make sure that you label the cables so that you know where they came from.
A video for this task is available at:
• YouTube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-C8THdP1nmPF25RWwGRta3v
60 ThinkSystem DG5000 Hardware Installation and Maintenance Guide
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