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:

  1. Take controller offline.

  2. Remove the controller canister.

  3. Replace the battery.

  4. Replace the controller canister.

  5. Bring the controller online.

Parent topic: Overview and requirements