When I try doing a system state backup of a DC to a NAS using Windows Server Backup, it'll work the first time, but on all successive runs it fails with the error "Error in deletion of [C:\System Volume Information\001.dat] while pruning the target VHD: Error [0x80070020] The process cannot access the file because it is being used by another process." If I delete the previous backup from the NAS, the next backup works, then all successive backups again have the problem.
The Windows Server is 2012 (not R2) & the NAS is a Netgear ReadyNas is 316 using firmware 6.5.1. The NAS is domain joined. I tried setting the SMB version on the NAS to 2.0 instead of the default 3.0; it made no difference.
I would greatly appreciate any suggestions.
Thanks!
