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Incremental Backup of Hyper-V VMs

Created: 30 Jun 2011 | 5 comments


I have a simple question. We have a Hyper-V cluster with some 40 VMs residing on a CSV. Is there any possible way to back these up with Backup Exec 2012 in a way where only the delta's are backed up each time? Apart from doing it from within the client obviously.


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gert5142's picture

Thanks for your answer. That's the doc I already found. It only mentions deduplication. But OK I'll give that a try.

Do you know of any other product that is capable of doing a "delta only withing the vhd" kind of backup? So only backup up what has changed in the vhd? It's really hard to belief that there is no product that can do that but I just cannot find one.

teiva-boy's picture

It's my understanding that BE still cannot dedupe VHD's well, like it can with Vmware VMDK's.  So I wouldn't bother trying with BE's own Dedupe.  Perhaps if you have the budget, look at a proven dedupe appliance from the likes of DataDomain or Exagrid?

There is an online portal, save yourself the long hold times. Create ticket online, then call in with ticket # in hand :-) "We backup data to restore, we don't backup data just to back it up."

sazz.'s picture

It is possible with Netbackup 7 check the link:

Enhanced Microsoft®
Hyper-V support
File-level incremental backups of Hyper-V virtual machines (Windows® only) are now possible with NetBackup 7.

sazz.'s picture
Symantec NetBackup (tm) 7.0 for Hyper-V Guide

NetBackup 7.0 for Hyper-V adds support for the following:
■ Off-host backup (an alternate client performs the backup).
■ File-level incremental backup.
■ Backup of a virtual machine that is in a Windows Server 2008 failover cluster.
■ Use of a NetBackup client that is installed in the virtual machine along with
the features of Snapshot Client.
A NetBackup client installed in a virtual machine enables the following:
■ Backup of the virtual drives that are inside the virtual machine.
■ Backup of the physical disks that the virtual machine accesses in a pass
through configuration.
■ Backup of databases and applications using NetBackup agents.