[LUNI] Newbie USB HDD question

[Kenneth P. Stox]

On Wed, 2008-04-16 at 14:37 -0500, jpodraza wrote:
> Hi,
> 
> I have an external HDD drive (SimpleDrive - USB 2.0 - 250GB
> - vfat) connected to an email server running Red Hat
> Enterprise Linux ES release 4 (Nahant Update 6).
> 
> When I boot up the server, the HDD can be mounted as
> /dev/sdc1.  Over the course of a day or two, it will move to
> /dev/sdd1 and /dev/sde1.

You need to disable the power saving feature(s) of the drive. Another
solution might be to automount it and make sure that the automount
timeout is less than the drive's power saving timeout.