I'm really stumped here.
We got a Seagate BlackArmor NAS 110 device in our small office (3 computers) to do regular backups of our Windows (XP and 7) PCs.
Recently, the device was offline and we only noticed this by chance as it seems that the BlackArmor Backup Software -- which is based on Acronis True Image -- will mark backups that fail due to a non available backup drive as sucess!
See this scrennshot: (explanation follows)

I apologize that it's in german, but it should be easy to understand:
Starting in the week of September 4th, the backup device was offline. Still, all backups were marked as success (green) and the logs just show (1) started / (2) Disk I/O error and nothing else.
The question now is
What I'd like to know now either form BlackArmor users (or, more likely, from Acronis "power" users), is, whether:
- my analysis makes sense so far?
- anyone else has ever been hit by this (with BlackArmor or TrueImage)?
- maybe there's an option I have missed and that's the reason we don't get any alarm bells from the software when the backup device is offline?