Error backing up TMG Server over Hyper-V with DPM 2010

The error: “DPM encountered a retryable VSS error. ID 30112”

Solutions not working:
– Changing the active partition using Fdisk
– Migrating the VM to the CSV owner
– Re-installing the VM

The following commands have been run to fix the issue:

  • Start the command prompt as an Administrator
  • Run the following commands:
  1. osql -S localhost\MSFW -E -Q “exec sp_configure ‘max server memory (MB)’, 768”
  2. osql -S localhost\MSFW -E -Q “RECONFIGURE WITH OVERRIDE”
  3. osql -S localhost\MSFW -E -Q “exec sp_configure ‘max worker threads’, 10000”
  4. osql -S localhost\MSFW -E -Q “RECONFIGURE WITH OVERRIDE”

Take notice the amount of MB depends on your VM configuration, in the case above the TMG server has 2 GB of RAM. After rebooting the server can now be backed up succesfully.

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