Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!mcsun!cernvax!achille
From: achille@cernvax.UUCP (achille petrilli)
Newsgroups: comp.sys.apollo
Subject: Using Exabyte for data exchange
Keywords: exabyte data exchange fortran
Message-ID: <1101@cernvax.UUCP>
Date: 29 Sep 89 11:05:42 GMT
References: <1989Sep28.205528.6220@hellgate.utah.edu>
Reply-To: achille@cernvax.UUCP (achille petrilli)
Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland
Lines: 26

Hi there, we are trying here to use exabytes as a way to ship user
written data to other sites. These data come from HEP experiments
where all code is in Fortran.
The ideal situation would be for us to not change any program and
simply tell users to use "/dev/..." as output file.
That's what I tried with the /dev/rmts* devices installed by Omniback.
(These are the device special files for tape units on SCSI).
Now comes the funny thing:
	ftn programs can write sequential formatted data on the exabyte
	(and you can even read it back !), but ...

	ftn programs canNOT write sequential unformatted data, the error
	messages says something like:
	"illegal parameter combination for this type manager"
Is ther anybody out there who has tried that, who wants to do the same
thing, who's been hit by this problem ? Any Apollo guru who knows why
I can't write raw data on a tape ?

If you want I can summarize to the net the answers (if I get any :-)
Thanks in advance,

Achille Petrilli
Cray & PWS Operations

P.s.: I forgot to mention that all that happens under sr10.1.p (dn10000),
	Omniback 1.0