Batteries; Requirements For De2000H Or De4000H Battery Replacement; Recovery Guru Alerts; Procedure Overview - Lenovo ThinkSystem DE Series Manual

Chapter 2. Batteries
2.1. Requirements for DE2000H or DE4000H battery
replacement
Before you replace a DE2000H or DE4000H battery, review the requirements
and considerations.
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.

2.1.1. 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.

2.1.2. Procedure overview

To protect your data, you must replace a failed battery as soon as possible.
The following is an overview of the steps required to replace a battery in a DE2000H and DE4000H:
1. Take controller offline.
2. Remove the controller canister.
3. Remove the failed battery.
4. Install the new battery.
5. Re-install the controller canister.
6. Bring the controller online.

2.1.3. Requirements for replacing a battery

If you plan to replace a failed battery, you must have:
• A replacement battery.
• An ESD wristband, or you have taken other antistatic precautions.
• Labels to identify each cable that is connected to the controller canister.
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