Running DPM 2012R2 (4.2.1338.0) on Windows 2012 R2 with at latest patch level.
Recently changed the file server and at first we were running with deduplication enabled. After seeing this error (see title) when running backup to tape, we turned deduplication off.
Now deduplication is turned off on the file server but we are still getting the error every time when performing tape backups. There are no issues performing recovery points, synchronizations or consistency checks to disk. We have only had one successful tape backup, just after we migrated to this file server but none since. After running the first few consistency checks DPM fixed thousands of items but now there are no items to correct and the check goes through.
The backup goes to 170 GB and then fail with error: (ID 2019 Details: An existing connection was forcibly closed by the remote host (0x80072746))
As I understand it, the tape backup does not retrieve information from the protected server, instead it shuffles data from the DPM server to the tape loader, so it should not be an issue at the protected server?
Any ideas or suggestions welcome.
Thanks, /M