Found it.  Thanks.

On Thu, 4 May 2006, Ed Wilts wrote:

> Date: Thu, 4 May 2006 15:55:15 -0500
> From: Ed Wilts <ewilts AT ewilts DOT org>
> To: Kathryn Hemness <kfhemness AT ucdavis DOT edu>
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] NB51 support for Redhat 4?
>
> On Thu, May 04, 2006 at 11:21:13AM -0700, Kathryn Hemness wrote:
> > I'm going to be replacing a Solaris 9 NetBackup server with a RedHat
> > Linux server.  I need to use NB51MP5 because NB60 doesn't support
> > AFS backups.
> >
> > The NB51 Release Notes indicate support for 32-Bit Redhat 3 for servers.
> > Is there anyone running a NetBackup server on Redhat 4?  If so, are
> > you using 32- or 64-bit?
>
> According to the compatability matrix, it's currently supported.
>
> See http://seer.support.veritas.com/docs/263839.htm
>
> --
> Ed Wilts, Mounds View, MN, USA
> mailto:ewilts AT ewilts DOT org
>

--kathy