Somebody do the math here: how long would it take to restore 60 GB from a
directly attached tape drive?

Best case: assume 8 MB/sec, the restore should take a little over two hours.
How many of us have seen that happen?  None.

So the rest if overhead setting up to read a file from tape and to set up
the filesystem to lay down the restored file.  I would think those two
things will be pretty consistent no matter whose tool is used.  Tapes with
better start/stop performance will have shorter read setup times and some
filesystems will be better than others, but the things that need to happen
are the same.

We need some real numbers here.

Kelly J. Lipp
Storage Solutions Specialists, Inc.
PO Box 51313
Colorado Springs CO 80949-1313
(719) 531-5926
Fax: (719) 260-5991
Email: lipp AT storsol DOT com
www.storsol.com
www.storserver.com