> >How would taper compare the tape contents to the files on the disk
> >while backing up?
>
> It depends on which "files on the disk" you mean. If you mean the holding
> disk, that's trivial since taper is reading it to write to the tape.
> If you mean the files back on the client, that's hopeless. The image may
> have been created days ago and the chances of getting a good verify (even
> if you wanted to add all the overhead needed to do so) would be zero.
This is an endless issue. We should also make sure that the network do
not corrupty the data back and forth, so that any chanbge is not
hidden...
But still any little bit of checking for data consistency, is better
than no checking at all.
Read-while-write is a hardware check, internal to the SLR100 drive,
but it is a good bit.
Olivier
