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VSS Errors and Backup problems

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We are using DPM 2010 to backup a 2008 R2 file server.  A few weeks ago backups started failing.

DPM reports the VSS provider is in a bad state.

Event logs on the file server at the time of backup:

Volume Shadow Copy Service error: Unexpected error calling routine Cannot find anymore diff area candidates for volume\\?\Volume{xxxxxx}\ [0].  hr = 0x8000ffff, Catastrophic failure

'vssadmin list writers' indicates all writers are stable and without failure.

there is only the MS VSS Provider installed on the server, in other words we aren't using a 3rd party vss provider on the file server.

When we do a 'vssadmin list shadowstorage' we get:

No items found thatt satisfy the query.

Do we need to manually create a shadowstorage location for our volume that we are backing up?  Should we reinstall our DPM agent to do this? 

-Ben P


Ben Pahl


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