Error V-79-57344-34036

Hi, 

I have 2 incremental back ups storing on the same HDD, however one keeps failing when run to schedule with the details below. When I "Run Now" the job is succesful. The other incremental backup I have scheduled, runs successfull everytime.

Backup- \\server.Local\E:
Storage device "BackUp NAS101 Incrm" reported an error on a request to write data to media.
Error reported:
The specified network name is no longer available.
V-79-57344-34036 - An unknown error has occurred.

Job ended: 27 August 2013 at 19:41:41
Completed status: Failed
Final error: 0xe00084f4 - An unknown error has occurred.
Final error category: System Errors

For additional information regarding this error refer to link V-79-57344-34036