Backing up to a disk causes the backup to fail with error.
Final error: 0xe000810c - Physical Volume Library Drive not available.
For additional information regarding this error refer to link V-79-57344-33036
Error in the Event Viewer:
Event ID 55 may be logged in the System log when you create many files on an NTFS partition on a Windows Server 2003.
Event Type: Error
Event Source: Ntfs
Event Category: (2)
Event ID: 55
Description: The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume