At my workplace we inherited a file server running Windows 2008 R2. (Core server unfortunatly, so no GUI)
Last year we decided it would be nice to have previous versions of files available for users. So we gave VSS a seperate volume, with 10% of the space of the data volume. (300GB and 3TB respectively) We set a scheduled task to take two VSS snapshots per day and everyhting worked fine. Previous versions showed up nicely.
Recently, previous versions just dissappeared and I can't find out why. I checked if administrative shares are working, they are. When i list the VSS writers, all the writers show the stable state, with no last error. And the VSS shadows also show up when you use vssadmin to list them.
The event log sometimes shows some errors from volsnap saying "The flush and hold writes operation on volume D: timed out while waiting for a release writes command." My guess is this is just due to activity while creating the shadows. They are created in any case.
Is there anything else I can check?
We did this on two, nearly identical file servers and on the other one everyhting is still working fine.
Best Answer
We have several servers running VSS and had two instances where VSS just stopped working, and it was due to a snapshot gone wrong.
I would turn off VSS, format the partition, and turn it back on, and you will probably find it will work fine again.