When we have frozen and/or expired tapes we erase them (magnet) and delete
them from the media server and master server databases, then re-insert them
as new media (we use bpexpdate to delete from media servers , then vmquery
-deassignbyid and vmdelete to delete from master servers, but we don't have
3.4 so it may be different).  They will then be "overwritten."  This may be
more work than you are looking for.

That is one solution you could use without messing with retention levels,
but we also would be interested in hearing other procedures.

Jason Jewell
NCR 1611 Main ST
Dayton OH 45479
937-445-4173


-----Original Message-----
From: Marcel van den Berg (Devote) [mailto:marcelb AT interxion DOT com]
Sent: Wednesday, May 23, 2001 6:13 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] overwrite tape


Hi, 

Might be a simple question but could not find an answer in the archive
nor on the site of Veritas nor in the manuals. 

We are using Netbackup Business Server 3.4.1 on Windows 2000 using a
Compaq tapelibrary. We have just one tape available for every day in the
week. So for every day there is a volumepool with one tape in it. 

How  can Netbackup be configuered that it overwrites the tape at every
backup? Now it appends the job to the tape, resulting in messages
'unable to allocate new media for backup.... (96) after a few
successfull backup's

Is the only way to control this the use of retention levels? 

best wishes
Marcel 
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