I would add that, yes, it would be a good idea to keep images on the VTL for
possible restores.  However, if you need the space, then you should remove
those images from the VTL as soon as they have been successfully duped.  Our
practice is to make two physical tape copies, one for on-site and the other
for off-site for DR purposes.  That way we have a physical tape on-site with
the backup image for quick restore so that we don't have to do any recalls
from offsite.

  _____  

From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Paul Keating
Sent: Monday, July 10, 2006 1:14 PM
To: veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Emc VTL and netbackup question


I would change the retention in your netbackup policies to be inline with
how long you want the data kept on the VTL.
When you duplicate/vault you can specify how long you want the data kept on
the "tape" copy, independantly......then the VTL copy will expire itself
after the amount of time you've specified in the original policy.
 
you don't really want to expire the VTL copy as soon as it's duplicated to
tape.....in theory, the best practice would be to dupe it to tape as soon as
possible, but keep it on the disk/VTL as long as you can (as long as you
have sufficient space to do "tonight's" backup) that way your restores come
from disk as much as posisble.
 
Paul
 
 
-- 

-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Hindle, Greg
Sent: July 10, 2006 3:54 PM
To: veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] Emc VTL and netbackup question



Nb 5.0 mp6 Solaris 9 EMC CDL VTL 

Ok here is the situation. We are testing this Emc CDL VTL. We backup data to
the VTL and now need to get the data on the VTL copied to physical tape and
then expire the image on the VTL. We were trying to use vault to perform the
copy but unfortunately it will not expire the images on the VTL because it
thinks the VTL are tapes. I understand that it will work if it was a DSU and
we were copying the data to tape but since in the eyes of netbackup this is
a tape to tape copy it is not designed to expire tape copies. This I just
confirmed with Symantec. SO I think I need a script that will run copy and
expire commands. Is anyone else using the EMC CDL VTL and has run into this
same problem? Does any have a script that will perform this function?

 

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