True enough.  If you multiplex backup streams you aren't restoring
without NBU.  However, catalogue and NDMP backups are not multiplexed so
both of those can be done easily without NBU.  The catalogue can be done
with GNU tar and the NDMP backups with restore (the NDMP backup is just
wrapped around the native dump command on the filer).  I've done both
first hand so can tell you it works.  But MPX backups are not feasible
without NBU, it could be done but only in the event of that nuclear
holocaust Andrew mentioned.

~JK

> -----Original Message-----
> From: Fabbro, Andrew P [mailto:Fabbro.Andrew AT cnf DOT com]
> Sent: Friday, January 24, 2003 1:17 PM
> To: 'Deb'; veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Considering moving to NetBackup
> 
> I'm not sure about some of the things you mention:
> 
> >1. With over 200 clients, updating them from one release to the next
> requires
> >   going to each client (via login of some kind) and doing an
interactive
> >   pkgadd.  I'm told that NBU allows client updates to be "pushed
out."
> This
> >   would save a lot of time, and be version reliable.
> 
> True for the Unix side.  I don't know that you can do that on the
Windows
> side (in our environment, the Windows admins always install their own
> clients).
> 
> > 8. LGTO writes in proprietary format to tapes, NBU is modified
gnu-tar.
> 
> I don't see this is a benefit.  If you have a set of tapes, you need
NBU
> to
> restore from them.  I suppose if there was a nuclear war and you were
the
> last man standing and all you had was gnu tar, NBU, and a tape drive,
then
> perhaps you'd be further along, but otherwise...how likely are you to
try
> any kind of restore without the backup software?  Also, I'm not sure
those
> tar files are really readable in the sense that you can use GNU tar to
> recover a file.  You're typically multiplexing blocks from different
> clients...my understanding was always more that the tar files on tape
are
> "containers" (via max fragment size) for data, not "tar archives" in
the
> recovery sense.
> 
> --
>  Drew Fabbro [fabbro.andrew AT cnf DOT com]
>  Unix Systems Group
>  Desk: 503-450-3374
>  Cell: 503-701-0369
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