Backing up virtual machines in a Hyper-V envirmonment with SCDPM 2010

For backing up Virtual Machines in a Hyper-V R2 environment, is it better to back up the VHD at the host level or backup the VM from within the VM?  I know for file servers, exchange server and sql server you'll want to backup from within the VM for individual file/mailbox/db recovery, but for any other server, what's the benefit of each method?  Or do you do both?
chome81Asked:
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dax_badConnect With a Mentor Commented:
Yes, as far as i know  DPM2010 supports incremental VHD backup from host level as long as you're using CSV's.

Here's a good article about Host level vs VM level backups with DPM2010:
http://hyper-v.nu/blogs/hans/?p=148

Hope that helps.

/Daniel
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Hernan RuggianoCommented:
Basically, backing up the VHD file ensures a quick recovery. Otherwise on a system crash, you will have to recover from the backup and cross your fingers, you may also need to perform an OS recovery with windows CDs.. much more work. I would recommend backing up VHD to reduce the downtime on one of this cases, and he the work you will have.
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chome81Author Commented:
Does it still only backup the "changes" in the VHD on nightly backups for example?
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