In the Storage Manager software, if the battery age timer indicates that the battery
is 2 years old, but the battery is not reported as failed, do not call your IBM
technical-support representative to replace the battery. Instead, reset the battery
age by using the procedure that is described in the Storage Manager software
online help.
Attention:
Write caching is suspended while a battery is either charging or
performing learn-cycle testing.
Controller battery age timer
The controller maintains a battery age timer for the controller cache battery. The
timer is set to indicate when the battery is 2 years old. Thirty days before the
battery expiration date, a warning message is displayed in the DS3000 Storage
Manager software.
After you replace a controller cache battery, reset the battery age timer. For
information about resetting the batter age timer, see the Storage Manager software
online help.
If the controller is running firmware version 07.35.41.00 or later, the controller uses
a smart battery learn-cycle test. The smart battery learn-cycle determines when the
cache battery is defective and needs to be replaced. The battery learn-cycle test
removes the need to rely on the battery age timer to determine the expiration date
of the cache battery. If the cache battery expiration message is still displayed after
you replace a controller cache battery, reset the battery age timer.
Chapter 4. Operating the storage subsystem
61
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