Backing up a deduped file system

DevilWAH

Here is the set up.

Windows server 2008 RC with a 8Tbye FC mapped LUN.

VSphere set up with a hosts datastore mapped to an NFS share on the above windows server.

a VMware DR appliance with a VMDK on the above NFS datastore.

So the VDR appliance is backing up to the VMDK which is on the LUN on the 2008 server...

that all works fine, until I go to backup the data on the windows server. I can't back up the LUN from the SAN server as its to dumb to allow that. So I have to back up the disk on the windows server that contains the VMDK, but of course when I do this using the wndows back up tool, it un-dedupes the data and then re-dedupes it making for a very slow back up.

So the question is, there a simple block level back up tool or other method to copy the VMDK files from the windows server in there native form so avoiding issues with any dudupe?

Cheers

jibbajabba

Tried just using the built-in Robocopy command?