FAS8200 - Replacing the NVMEM battery.pdf

FAS8200 systems

Replacing the NVMEM battery

To replace an NVMEM battery in the system, you must remove the controller module from the system, open it, replace the

battery, and close and replace 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. Opening the controller module on page 3

You can shut down or take over the impaired controller using different procedures, depending on the storage system hardware

configuration.

Shutting down the 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.

Before you begin

• 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

Steps

3. If the system has only one controller module in the chassis, turn off the power supplies, and then unplug the impaired node's

Steps

1.

Check the MetroCluster status to determine whether the impaired node has automatically switched over to the healthy node:

2. Depending on whether an automatic switchover has occurred, proceed according to the following table:

Example

If the healing is vetoed, you have the option of reissuing the metrocluster heal command with the -override-vetoes

parameter. If you use this optional parameter, the system overrides any soft vetoes that prevent the healing operation.

4. Verify that the operation has been completed by using the metrocluster operation show command.

Example

6.

Heal the root aggregates by using the metrocluster heal -phase root-aggregates command.

Example

8. On the impaired controller module, disconnect the power supplies.

Opening the controller module

To access components inside the controller, you must first remove the controller module from the system and then remove the

cover on the controller module.