On Mar 6, 2013 6:33 AM, "Steve Merrony"
<steve at stephenmerrony.co.uk> wrote:
What is the current best practice for creating an
image of a SCSI tape in
such a way that it can later be used to reliably make a
replica of that
tape?
I have a fully functioning SCSI tape drive (via
Linux at the moment) and
want to image various sorts of Data General (and other)
tapes safely and
also duplicate a couple of them. They are in various odd formats. I can
use the non-rewinding device (/dev/nrst0 etc) to get individual files off
the tapes but that is tedious and writing a tape like that seems like a
nightmare.
I found tcopy and built it - but it expects two
drives and does not deal
with the drive-and-file case.
Steve
I have some code that I run on Linux
to write the contents of a SIMH style
.TAP tape image file to a SCSI tape drive that I've used with Exabyte
EXB-8200 drives. Plus also do the reverse to read the tape back to an image
file for verification, or create an image of a tape.
The code I use was originally based off of the 2.11BSD distribution
maketape code.
I'm sure there a many variations of this sort of code out there. I could
send you the code I use if you're interested.
There is also ST.EXE here for MS-DOS you could look at:
http://www.dbit.com/pub/ibmpc/util/
-Glen
) includes a
tapecopy utility that will copy a SCSI tape to "aws" format and back to
tape.
Not sure how AWS compares with "tap" format but it preserves the content
of tapes, including tape marks and has forward and backwards pointers
for emulators that read backwards.
--
Dave Wade G4UGM
Illegitimi Non Carborundum