AFF A700s systems
Replacing the NVRAM battery
To replace an NVRAM battery in the system, you must remove the controller module from the system, remove the battery,
replace the battery, and then reinstall the controller module.
About this task
All other components in the system must be functioning properly; if not, you must contact technical support.
Steps
1. Shutting down the impaired controller on page 1
2. Removing the controller module on page 2
3. Replacing the NVRAM battery on page 3
4. Reinstalling the controller module on page 4
5. Completing the replacement process on page 5
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.
Steps
1. If you have a cluster with more than two nodes, check the health and Epsilon from advanced mode:
cluster show -epsilon *
If the cluster is not in quorum or a node that is not the impaired node shows false for eligibility and health, correct the
issue before proceeding to the next step.
If Epsilon resides in the impaired node:
a. Remove Epsilon from the impaired node:
cluster modify -node impaired_node -epsilon false
b. Assign Epsilon to a healthy node in the cluster:
cluster modify -node healthy_node -epsilon true
2. 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
3. Take the impaired node to the LOADER prompt:
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215-11309_2019-08_en-us August 2019 Copyright
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