Troubleshooting
Problem
After replacing one or more disk controller cache batteries, poor system performance and long disk response is seen.
Resolving The Problem
In order to safeguard data, write caching on the storage adapters is prohibited until the battery is fully charged. Due to changes in technology, such as the transition from NiCd/NiMH to LiIon batteries, the charge time has increased from about an hour to several hours. Also, for safety reasons, batteries being shipped and kept in field stock are kept at 50% or less charged state and thus will always require a significant amount of time to charge when they are first installed. The charge time can take up to 5.25 hours.
It is recommended to take this into consideration when replacing the batteries concurrently during production hours.
Once the battery is fully changed, the write cache overruns found in a Component Report will go to zero and performance will return to normal.
Historical Number
529163424
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Document Information
Modified date:
11 November 2019
UID
nas8N1012852