From the Admin Alert archives: Checking Cache Battery Status on IBM i Systems

As I’ve written about in several Admin Alert columns for IT Jungle, IBM uses batteries in its IBM i disk controllers to provide caching for its disk drives.

The batteries’ useful life is about 2.5 – 3 years. To avoid performance slowdowns when the batteries run out, your IBM i system will start sending out warning messages roughly about 80 days before the batteries are calculated to reach end of life. Once you receive these messages, you should contact IBM or your maintenance provider to arrange for swapping out the batteries. 

Here are some Admin Alert articles you can reference for what to do if you receive a cache battery warning on your system. I just received a battery alert this morning, and that prompted me to post these links again.

The messages will appear in the QSYSOPR message queue. If you’re not using monitoring software to alert you when new error messages occur, it’s worth using the battery status program referenced above on a regular basis after your system passes its’ second birthday.


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About Joe Hertvik

Joe is the owner of Hertvik Business Services, a service company providing written white papers, case studies, and other marketing content to computer industry companies. He is also a contributing editor for IT Jungle and has written the Admin Alert column for the past ten years. Follow Joe Hertvik on Twitter @JoeHertvik. Email Joe for a free quote on white papers, case studies, brochures, or other marketing materials.
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