I have been running backups on a Windows 2012 R2 Server (Dell PowerEdge T420) for a few months with no problems. We backup to a rotation of 3 RDX 1TB Cartridges but found out that Windows Backup does not support removable RDX media. To get around this problem, we use BackupAssist which still uses Windows Server Backup in the background to complete the backups.
BackupAssist uses a single .vhd container file on the RDX and it is mounted asdrive G:
Again, this worked for a few months with no problems.
Then I ran Windows Update and about 30 updates were applied to the server. Since then we cannot seem to keep multiple backups on the RDX Cartridge. Before the Windows Updates, I was able to keep previous backups, sometimes as many as 98 copies. We are backing up about 30GB of data each night.
Now, since the Windows Updates, I cannot get past 2 or 3 perhaps, and then lose all backup copies and end up with a completed backup, but only 1 backup copy and no previous backups.
We see in the error log the following error, which I believe is the cause of the problem. Backups run at 8pm nightly.
I have 3 sites setup the same. 2 of the sites had all the Windows Updates applied and then started having this problem. The above error was never seen until the Windows Updates. The third site has not had any Windows Updates applied, and we currently have 42 previous backups on the loaded RDX Cartridge.
I have been working with BackupAssist support, but they state that it is simply Windows Server Backup that runs the back end and it is probably a Windows Server issue. I have been fighting this for 2 months now.
Just wondering if anyone has any idea on the above error.
Thanks in advance to any that can shed some light on this problem.