> Also why I would not want all backup-storage devices connected > simultaneously. All it takes is one piece of software going haywire > and you may have a situation where both the original and all backups > are corrupted simultaneously.
You can minimize this risk by having them both connected simultaneously but to different machines (this is also necessary if you want A and B to be in different physical locations, e.g. to survive disasters), and then make sure the machine which copies from A to B doesn't have write access to A. Stefan