Veritas-bu

Re: [Veritas-bu] Offsite tapes

2007-06-08 02:57:35
Subject: Re: [Veritas-bu] Offsite tapes
From: "Curtis Preston" <cpreston AT glasshouse DOT com>
To: "Wolters, Keith" <Keith.Wolters AT level3 DOT com>, <VERITAS-BU AT mailman.eng.auburn DOT edu>
Date: Fri, 8 Jun 2007 02:32:46 -0400

NBU has a number of copies field (Master Server properties in your GUI, I’m on a plane right now and don’t have access to a server)  If it’s set to 2 (your case), it will only make two copies of a given backup.  What I think is happening is that your disk staging setup has duped your disk backup to tape, but hasn’t yet expired it from disk.  Now there are two copies and you’re trying to make a third.  So you can fix your problem by setting the number of copies to 3.

 

Or….

 

You can leave it at 2 and use the feature of bpduplicate that automatically figures out which backups to copy.  If you say you want two copies, and then just run bpduplicate without specifying backup image names.  You can specify the name of the policies and clients you want it to look at.  Then it will look at all the backups that don’t have two copies, select them, and dupe them for you.  If you’ve got some images that are on disk staging and on tape, they won’t dupe at that time. As soon as they expire off disk, they’ll get duped the next time you run bpduplicate without specifying image names.  This method will only work if you’re a relatively small shop that can do all your dupes with one dupe session, as there’s no multistreaming/multiplexing this way.

 

Finally, I’d have to say that my opinion is that the best way to do anything like this is to use NBU Vault.  Feel free to do a proof of concept before you pay for it, but my opinion is that whatever you’re saving by not paying for it is more than lost by the time you’ll spend writing a script.

 

---

W. Curtis Preston

Author of O'Reilly's Backup & Recovery and Using SANs and NAS

VP Data Protection

GlassHouse Technologies

 


From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Wolters, Keith
Sent: Thursday, June 07, 2007 12:30 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Offsite tapes

 

I'm trying to develop a procedure for duplicating backups for offsite using NBU 6.0 (master and media servers are Solaris). There are about 8 machines whose backups I want to duplicate. Some backup go directly to tape and some are staged to disk. I use automatic staging. When I run a script to use bpduplicate I notice I sometimes get errors like this:

 

nbdup.log:11:06:54 INF - Skipping backup id amamed_1181109602, it already has 2 copies.

 

I assume that has to do with whether or not my script runs after the backup has already been staged to tape. What I need to know is how best to deal with that and get a copy whether or not a backup has been migrated to tape or not.

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