Replacing A Battery - IBM DS3500 Installation, User's, And Maintenance Manual

If these tasks do not solve the problem, contact your IBM technical-support representative.
19. Complete any remaining Recovery Guru procedures, if needed.
20. Check the status of each component in the storage subsystem.
21. Are any amber LEDs lit on any of the components?
v Yes : Click Recovery Guru in the Subsystem Management window toolbar and complete the
recovery procedure. If a problem is still indicated, contact your IBM technical-support
representative.
v No: Go to step 22.
22. Create, save, and print a new storage subsystem profile.

Replacing a battery

The controller in the storage subsystem contains a rechargeable battery backup unit that provides power
to back up the cache memory onto flash drives in the event of a power failure. Each battery unit contains
a sealed, rechargeable SMART lithium ion battery. The cache battery is the only replaceable battery in the
storage subsystem.
Use the following procedure if the Storage Manager software instructs you to replace the battery because
the current battery has failed. You can also use the Storage Manager software to check the status of the
battery. Because write-caching is disabled when the battery fails, replace the failed battery as soon as
possible to minimize any performance impact due to the disabling of the write-caching function.
Attention: When you handle static-sensitive devices, take precautions to avoid damage from static
electricity. For details about handling static-sensitive devices, see "Handling static-sensitive devices" on
page 2-3.
Attention: To avoid overheating the storage enclosure and causing damage to its components, replace
failed parts within 10 minutes. The Recovery Guru in the Storage Manager software identifies failed
parts.
Do not remove the failed part from the storage enclosure until you:
v Review the replacement procedure for the failed part in this guide.
v Locate screw drivers or any other hand tools that you might need to replace the failed part.
v Receive the replacement part and are ready to install it in the enclosure.
To replace a battery unit, complete the following steps:
1. Use the Storage Manager software to print a storage subsystem profile.
2. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
3. Locate the controller that contains the failed battery unit (see "Controller LEDs" on page 4-9).
Attention: Before you remove a controller in a single-controller DS3500, shut down the DS3500 to
avoid data loss (see "Turning off the storage subsystem" on page 4-14).
4. Remove the controller from the chassis.
Chapter 5. Replacing components
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