Similar type of error, I am running BESR 8.5.5 - now have this error on 2x client sites, each site has a 1TB external USB drive with a shared folder for each backup job (full access given to everyone)... On 8.5.0 I was able to backup, now upgraded to 8.5.3, then 8.5.5 and have the same errors. Servers are all Windows 2003 file servers /backups done locally seem to be fine, except when trying to backup across the network.. The servers are on a 1GB switch, and each have 1GB NIC's, at loss as what to do now, below is a dump from my event viewer...
Event Type:
Error
Event Source: Backup Exec System Recovery
Event Category: High Priority
Event ID: 100
Date: 11/9/2009
Time: 8:23:09 PM
User: N/A
Computer: CJPCHEMTS
Description:
Error EC8F17B7: Cannot create recovery points for job: Drive Backup of Windows (C:\). Error E7D1001F: Unable to write to file. Error EBAB03F1: The specified network name is no longer available. Error E7D10046: Unable to set file size. Error EBAB03F1: The specified network name is no longer available.
Details:
Source: Backup Exec System Recovery