We're having a major problem with Retrospect 7.7 at one of our customers. It's setup to store the backup on a NAS (Netgear ReadyNAS Ultra II, over a good quality gigabit network connection).
It works for a few weeks, then it just comes to a complete halt spitting out "Device trouble: "1-Huvudbackup - IQFSQL, error -105 ( unexpected end of data )"
A rebuild/repair doesn't work at all, it keeps spitting out the same message.
While this is happening, the actual connection between Retrospect and the NAS works just fine. Everything copies nicely if you do it through explorer etc.
The disks are tested and tested again, and even replaced. Still the same fault.
I have to recycle the entire backup for it to work, which is a big no no. The backup size is around 3,5TB.