W dniu 06.06.2021 o 16:20, Joe Monk pisze:
"There is another requirement here: to read REAL tape using PC tools.
How to read?
a) dataset by dataset
b) whole tape => AWS tape image"
Radoslaw,
Hercules has a really cool utility called TAPECOPY! It reads a real tape
and copies it to an AWSTAPE format disk file. Of course, being written by
mainframes, TAPECOPY is sensitive to mainframe tape marks, RDW/BDW, etc.
The resulting AWSTAPE file is a mirror image of the tape.
"The Hercules tape copy program copies a SCSI tape to or from an AWSTAPE
disk file. Tapecopy reads a SCSI tape and outputs an AWSTAPE file
representation of the tape, or reads an AWSTAPE file and creates an
identical copy of its contents on a tape mounted on a SCSI tape drive.
If the input file is a SCSI tape it is read and processed until physical
EOD (end-of-data) is reached. That is, it does not stop whenever multiple
tapemarks or filemarks are read, rather it continues processing until the
SCSI tape drive says there is no more data on the tape.
The resulting AWSTAPE output disk file may be specified for the filename on
a Hercules tape device con- figuration statement. It can then be used in
order for the Hercules guest O/S to read the exact same data without having
a SCSI tape drive physically attached to the host system. This allows you
to easily transfer SCSI tape data to other systems that may not have SCSI
tape drives attached to them."
I stand corrected. I didn't know about this Hercules tool, nor about
Hercules support for real external devices like tape drive.
So, the solution could be 3420-compatible tape drive with SCSI interface
connected to a PC with Hercules.
--
Radoslaw Skorupka
Lodz, Poland
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