Good shot Simon, but I think this is a data mirror (as opposed to cluster?)  In 
that case, they have a SQL server configured to instantly replicate any changes 
of a database to another SQL server that is not attached to the same physical 
storage.  The mirror is more than likely read only.  The last time I had a 
configuration similar to this we backed up both.  I don't think you need to 
through.  Its a fairly strait forward process should the live data server go 
down, to move that database back or make the read only copy live.  I haven't 
played with SQL 2005 but I managed several databases like this with SQL 2000.  
Generally speaking we used data mirrors to take processes with high loads (huge 
queries, backups etc) off the production server.
 
-Jonathan

________________________________

From: veritas-bu-bounces at mailman.eng.auburn.edu on behalf of Jenner, Steven
Sent: Thu 4/5/2007 11:34 AM
To: WEAVER, Simon (external); veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Methods to Backup SQL 2005 mirror



Hi Simon,

 

Yeh I'm also backing up a SQL2005 cluster but am unsure how to proceed with 
regard to a mirror installation. Obviously in a mirror setup there is only one 
'live' db but depending on whether it has failed over it could be node A or 
node B. Therefore should I back up both nodes  and therefore purchase two agent 
licenses or do I only backup the one 'live' DB and switch the backup over if 
the solution fails over? 

 

Cheers,

 

Steve.

 

________________________________

From: WEAVER, Simon (external) [mailto:simon.weaver at astrium.eads.net] 
Sent: 05 April 2007 14:46
To: Jenner, Steven; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Methods to Backup SQL 2005 mirror

 

Steve

Well I backup sql2005 as a cluster.

 

Agent is installed on 2 nodes, backup configured as a Virtual Name.

 

I basically followed the sql agent documentation and through trial and error 
got it working, using Windows authentication (once the account was configured 
within sql to allow backups to be done!).

 

 

Regards

Simon Weaver
3rd Line Technical Support
Windows Domain Administrator 

EADS Astrium Limited, B23AA IM (DCS)
Anchorage Road, Portsmouth, PO3 5PU

Email: Simon.Weaver at Astrium-eads.net <mailto:Simon.Weaver at 
Astrium-eads.net> 

        -----Original Message-----
        From: Jenner, Steven [mailto:Steven.Jenner at uk.telstra.com] 
        Sent: 05 April 2007 12:00
        To: veritas-bu at mailman.eng.auburn.edu
        Subject: [Veritas-bu] Methods to Backup SQL 2005 mirror

        Hi,

         

        Is anyone out there using the NetBackup SQL agent to back up a SQL 2005 
mirror (with witness server)?

         

        I have been asked to test this and am unsure of the best way to proceed 
i.e. do I need to install the agent on both servers (principal and mirror) and 
back both up nightly or do I just back up the principal?

         

        There appears to be little info in the documentation and my SQL 
knowledge is limited so I'm unsure of the best way to proceed.

         

        Thanks in advance,

         

        Steve. 

                                       

        
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