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.
About this task
• 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.
Steps
1.
Shutting down the impaired controller
on page 3
2.
Opening the controller module
on page 6
3.
Replacing the RTC Battery
on page 7
4.
Reinstalling the controller module and setting time/date after RTC battery replacement
on page
8
5.
Switching back aggregates in a two-node MetroCluster configuration
on page 9
6.
Completing the replacement process
on page 10
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.
Choices
•
Shutting down the impaired node
on page 3
•
Shutting down the node
on page 4
•
Shutting down a node in a two-node MetroCluster configuration
on page 5
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.
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
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
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.
AFF A300 systems: Replacing the RTC battery 3
Replacing the real-time clock battery
