My other point is that the remote servers on our gigabit network are Dell blade servers, which have 2xscsi 15K drives, but they are mirrored in a RAID1 configuration, these are the servers giving the slowest throughput when being backed up using normal remote file backup.
Is a mirrored configuration like this a problem when running open file agents as performance is obviously less than a a stripe of many disks, obviously, if only I had been consulted in the purchase of these servers as file storage devices!