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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