AS/400 battery replacement 44L0313

50 pts.
AS400 battery replace
Cache battery
I need to replace our AS400 cache memory battery backup. The unit is a 9406 250. I do not know where in the system the battery pack resides. Which panels should be removed, top, right (facing the system unit), left, front? After removing the correct panel(s), where would the battery pack be located? Can anyone help? Thanks.

Software/Hardware used:
AS400 9406 250 cache battery pack replacement

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    Do a search on 9406-250 and like at the user guide or if the system still has maintenance call IBM.
    3,175 pointsBadges:
  • WoodEngineer
    Strongly recommend calling IBM to do this. Our battery needed to be replaced early this year. I asked the IBM tech about horror stories we hear of people losing all their data when the battery is replaced. He said this is possible if the correct procedure is not followed. I was surprised how many steps he went through. There is a lot more to this than replacing the battery in a watch or cell phone!
    8,225 pointsBadges:
  • Lovemyi
    The cache battery is located on the RAID controller card that supports your disks. I do not know which RAID card you have but some are changeable concurrently while others need the entire system shut down to remove the RAID card from the card enclosure to be able to replace the cach battery. Even if the caceh battery is replaceable concurrently, I would still recommend a clean shut down of the system to change it. That way any data is written to the disks while shutting down to make sure the cache is cleared. IBM's instructions are excellent if you follow them to the letter. You can see the concurrent battery door on the end of the raid card if it is concurrent but be warned that the battery when they get old tend to swell so you could easily have problems taking the battery out of the door if you try to do it concurrently. Lovemyi
    2,310 pointsBadges:
  • OldSysAdmin
    It's important to completely fail the unit in SST to write everything from the cache to the disk before doing anything else.
    945 pointsBadges:
  • Featured Member: Lovemyi - ITKE Community Blog
    [...] AS/400 battery replacement 44L0313 [...]
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  • TheRealRaven
    For an "answer", download and review a AS/400e server 170 and 250 Problem Analysis, Repair and Parts manual. Anyone with a system should either have appropriate service manuals or plan on paying a qualified technician.
    36,370 pointsBadges:

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