Chapter 8 Maintaining Your Array 8-3
Your lithium ion battery should be changed every two years if the unit is
continuously operated at 25 degrees C. If the unit is continuously operated at 35
degrees C or higher, the battery should be changed every year. The shelf life of your
battery is three years.
Note – The RAID controller has a temperature sensor which shuts off battery
charging when the temperature reaches 54 degrees C. When this happens, the
battery status might be reported as BAD, but no alarm is written to the event log
because no actual battery failure has occurred. This behavior is normal. As soon as
the temperature returns to the normal range, battery charging resumes and the
battery status is reported correctly. It is not necessary to replace or otherwise
interfere with the battery in this situation.
For more information, see “Environmental Requirements” on page 2-3 for the
acceptable operating and nonoperating temperature ranges for your array.
For information about the date of manufacture and how to replace the battery
module, refer to the Sun StorEdge 3000 Family FRU Installation Guide.
TABLE 8-1 Battery Status Indicators
Battery Display Description
----- Discharged; the battery is automatically recharged when it reaches this
state.
+---- Adequately charged to maintain cache memory for 72 hours or more in case
of power loss. Automatic recharging occurs when the battery status drops
below this level.
++--- 90% charged; adequate to maintain cache memory for 72 hours or more in
case of power loss.
+++-- 92% charged; adequate to maintain cache memory for 72 hours or more in
case of power loss.
++++- 95% charged; adequate to maintain cache memory for 72 hours or more in
case of power loss.
+++++ Over 97% charged; adequate to maintain cache memory for 72 hours or
more in case of power loss.
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