Thanks that's what I thought. I also verified it in
the "VERITAS NetBackup? 5.0 Shared Storage Option for
UNIX and Windows SAG".

"SSO Restrictions and Limitations" section.

"NetBackup does not share media between media servers
for shared (or non-shared)drives. When media is first
used in a backup, NetBackup notes the media server (or
SAN media server) where the media is written and does
not allow the media to be
used by other servers."


Frequently Asked Questions (FAQ) About SSO Section


"I assume that once a server picks a tape drive and
writes media, that media can only be written to again
by that server. With existing NetBackup media servers
today, a tape ?belongs? to a media server until it
expires or is deleted. Is this right?

Yes. Assigned media is still dedicated to a single
server (see ?SSO Restrictions and  Limitations? on
page 33)."


--- d j <dejessen AT hotmail DOT com> wrote:
> Each media server has its own 'inventory' of tapes
> in use/assigned - the 
> media catalog.
> I do not believe a tape can be in 2 media servers
> catalogs.
> 
> The volume catalog on the master server keeps track
> of all tapes - assigned 
> or not.
> The robot control host is on the media server, and
> there is only one entry 
> for robot control host.
> Which leads me to believe that 2 media servers
> (robot control hosts) cannot 
> have one tape assigned.
> 
> Hope this helps.
> 
> >From: Douglas Ritschel <dritschel62 AT yahoo DOT com>
> >To: veritas-ng <veritas-bu AT mailman.eng.auburn DOT edu>
> >Subject: [Veritas-bu] SAN Media Servers writing to
> the same tape
> >Date: Wed, 30 Jun 2004 15:00:57 -0700 (PDT)
> >
> >If I have two SAN Media Servers, and have two
> >Policies, one using the Storage Unit on Media
> Server
> >one and the other Policy using the Storage Unit on
> >Media Server two. Both Policies using the same
> Volume
> >Pool. If Policy one runs, pulls a tape from the
> Scrath
> >Pool, completes, and unmounts the tape. Then Policy
> >two runs, will it write to the same tape as Policy1
> or
> >select another tape from Scratch?
> >
> >
> >
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>
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