Battery overview
Each controller canister includes a battery that preserves cached data if the AC power fails. To protect your data, you must replace a failed battery as soon as possible.
Recovery Guru alerts
If the Recovery Guru in ThinkSystem System Manager reports one of following statuses, you must replace the affected battery:
- Battery Failed
- Battery Replacement Required
From ThinkSystem System Manager, review the details in the Recovery Guru to confirm that there is an issue with a battery and to ensure no other items must be addressed first.
Do the following steps to replace a battery if you have two controllers:
Take controller offline.
Remove the controller canister.
Replace the battery.
Replace the controller canister.
Bring the controller online.
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