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When I try to start the windows server backup it fails because of empty disk space. I get the following error message in the event log:

The backup operation that started at xxx has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348249'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.

The main drive C: has two partitions:

  • Windows partition (normal drive you see in Windows)
  • System backup (bootmgr, VSS, ...) 100 MB

The system backup partition has only ~5 MB free disk space and fails when trying to back up, but only if I include the system backup partition which is recommended.

I tried to use C: for the VSS files, but still I get the same error. I have enough space on my external backup media so it only has to do with the system backup partition.

How can I make the server backup?

  • Did you look in event viewer for the log it created? – Moab Jan 23 '16 at 18:56
  • What are you using for external backup storage? – Moab Jan 23 '16 at 18:57
  • The message I posted comes from the event viewer. Or what do you mean? External backup storage is a 1 TB HDD. The system drive I want to backup has 256 GB. So plenty of space. – testing Jan 23 '16 at 19:06
  • Google returns nothing using that error code. – Moab Jan 23 '16 at 21:21
  • I have some results when I look after "windows home server error code 2155348249". – testing Jan 23 '16 at 21:36

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