I have a Windows Server 2008 R2 machine being backed up using Backupassist but also utilizing VSS. The backups destination drive is iScsi drive (qnap). Recently I discovered that my previous backups were deleted and I am getting below log. The shadow
copies were deleted during backup process.
Event ID:25 Source: volsnap
The shadow copies of volume Y: were deleted because the shadow copy storage could not grow in time. Consider reducing the IO load on the system or choose a shadow copy storage volume that is not being shadow copied.