Batteries
A battery is included with a controller canister and preserves cached data if the AC power fails.
Overview and requirements
Before you replace a battery, you need to be aware of certain requirements and considerations.
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 SANtricity System Manager reports one of following statuses, you must
replace the affected battery:
• Battery Failed
• Battery Replacement Required
From SANtricity 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.
Steps needed to replace battery
The following is an overview of the steps to replace a battery in E5700 controllers (E5724, EF570, or
E5760):
1. Take controller offline.
2. Remove the controller canister.
3. Replace the battery.
4. Replace the controller canister.
5. Bring the controller online.
Requirements for replacing a failed battery
If you plan to replace a failed battery, keep the following requirements in mind.
• You must have installed SANtricity Storage Manager on a management station, so you can use
the storage array's command line interface (CLI).
If this software has not yet been installed, follow the instructions in the
Linux express
configuration
,
Windows express configuration
, or
VMware express configuration
to download
and install it.
• You must have a replacement battery.
• You have an ESD wristband, or you have taken other antistatic precautions.
• You should use labels to identify each cable that is connected to the controller canister.
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