Re: Replacing the cache memory battery on the AS/400 - a warning

Albert,

There are PTF's out for the cache batteries and the way they are monitored.
For V5R1 they are MF28977 and MF28981.  I would recommend that you go out to
the PTF cover pages and take a look.

Regards,

Mike Shaw

----- Original Message -----
From: "York, Albert" <albert.york@nissan-usa.com>
To: <MIDRANGE-L@midrange.com>
Sent: Wednesday, July 24, 2002 1:52 PM
Subject: Replacing the cache memory battery on the AS/400 - a warning


> In the last few months we have had several AS/400s which have needed the
> battery replaced for the cache memory. Since the machines were all
purchased
> about the same time this is not surprising. Normally, the replacement
> process is pretty straight forward and we have had few problems. However,
I
> would like to give everyone a heads up if they find they need to replace
> one..
>
> Make absolutely sure that you power down the system normally using the
> PWRDWNSYS command before the battery is replaced. We had one CE who forced
> the power down which meant that nothing that was in cache memory got
written
> to disk. He then replaced the battery which wiped out the memory. This is
> causing us no end of trouble. We have dozens of damaged objects. Luckily,
> most of them are logical files and we are able to rebuild them, but we
have
> also had to restore a couple physical files from tape. It looks like we
> won't lose much data but it is causing a lot of work and downtime.
>
> Albert York
>
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