2950 Storage ROMB Battery Failure - Resolution Help Required

[Irwan Hadi]

This means the Raid On Motherboard' Battery is bad and needs to be replaced.
When the battery goes bad, the RAID controller should flush its cache,
and revert to write through mode, instead of write back (if it is was
configured with write back).

Write through is a bit slower than write back, as the data must be
written to disk completely, before the controller ack the request.

We have had two PE2950 with bad ROMB battery.

If the server is still under warranty, call Dell support at
1-800-945-3355 to get replacement.
If you are comfortable you can do it by yourself (Dell will send
part), or if you want you can ask for a tech to install it for you.
It is pretty easy to replace the battery, as it is located right on
top of your hard drives bay.

On 7/21/07, Andrew Hall <andyjohnhall at gmail.com> wrote:
> Hi there.
>
> We have an unresponsive 2950 running CentOS4 which is showing a
> succession of these messages on the console...
>
> EXT3-fs error (device dm-0) in start_transaction: Journal has aborted.
>
> It's a 6x3.5" SAS disk RAID10 array, with a PERC5/i controller.
>
> And in the DRAC system event log...
>
> Storage ROMB Battery: Battery Sensor For Storage, Failed Was Asserted
>
> Also, the DRAC Batteries probe reveals that the storage ROMB battery
> reading has failed.
>
> My questions are...
>
> 1. Could these incidents (filesystem error and ROMB battery failure)
> be related, or are they co-incidental?
>
> 2. What is a ROMB battery, and what is its purpose?
>
> 3. How do I go about replacing it?
>
> Thanks very much for your help,
>
> Andrew Hall.
>
> P.S. Yes, I am (relatively) new to all this :-)
>
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