Veritas-bu

Re: [Veritas-bu] VMware backups in NBU 6.5.1 - Multiple concurrentsnapshots?

2007-12-20 16:29:59
Subject: Re: [Veritas-bu] VMware backups in NBU 6.5.1 - Multiple concurrentsnapshots?
From: "George Winter" <george_winter AT symantec DOT com>
To: <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Thu, 20 Dec 2007 14:16:54 -0700
Hi Eddie. 
 
There are a couple of settings within NetBackup that could limit the number of simultaneous jobs.  First, check that your destination Storage Unit will allow multiple jobs.  Next, check the "Limit jobs per policy" setting within your VMware policy.  Make sure that both of these settings are configured high enough to allow multiple streams.
 
NetBackup for VMware has been designed to enhance VMware Consolidated Backup snapshot creation and deletion.  Part of this design is preventing too many snapshots from occurring at once.  If too many snapshots are simultaneously created, the VMware Datastore can be severely impacted and snapshot creation can fail.  This is why you might be seeing a limited number of jobs running simultaneously with some jobs queued.  Once the vmdk data is safely copied to the staging area on the VMware Backup Proxy, the snapshot will be released and another job will immediately commence.  In general, during standard backup runs you should see multiple backups simultaneously occur.
 
Hope this helps....
 
-George
 


From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Navarro, Eddy
Sent: Thursday, December 20, 2007 12:09 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] VMware backups in NBU 6.5.1 - Multiple concurrentsnapshots?

Hi All,

 

I’ve just finished setting up a policy to backup our VMware environment using NBU 6.5.1.  Gone are the days of bpstart and bpend notify scripts in favor of the NBU Snapshot Client.

 

My question to those who have set this up- is it possible to have multiple VM snapshots occur simultaneously with a single proxy server?  Right now it seems like only one snapshot can be created and backed up at a time, and the only solution to improve your backup window is to have a bunch of proxy servers.  I see multiple streams in an active state, but only one stream is actually being processed at a time.

 

We’re running NBU 6.5.1, ESX Server 3.0.1, VirtualCenter 2.0.1, and VCB 1.1.

 

Thanks for any assistance,

Eddy

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