[CentOS] Drive activity every 30sec

On Mon, 2008-07-07 at 18:35 -0400, Robert Moskowitz wrote:
> I have a Centos installed on a Hitachi 2.5" drive that shuts off really 
> quickly, it seems.
> 
> So every 30 sec, the drive makes the sound of an access activity.  I 
> have looked trying to find what might be being updated.  Swap drive 
> usage is 0 bytes.  No activity in /var/log.  What might it be and can I 
> do anything to lessen the drive access (improve battery life)?
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don't use a journalled filesystem (ext3)

Craig