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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!sdd.hp.com!elroy.jpl.nasa.gov!ames!sgi!classic.asd.sgi.com!jeremy
- From: jeremy@classic.asd.sgi.com (Jeremy Higdon)
- Subject: Re: jagtape drivers
- Message-ID: <rvgcdi0@sgi.sgi.com>
- Keywords: jagtape no-swap driver
- Sender: jeremy@classic.asd.sgi.com
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <1992Oct26.174646.11065@den.mmc.com>
- Date: Thu, 5 Nov 1992 06:18:02 GMT
- Lines: 34
-
- In article <1992Oct26.174646.11065@den.mmc.com>, beck@ro.den.mmc.com (Fred R. Beck) writes:
- > I have a quick couple of questions for any SGI device driver folks
- > out there. Particularly concerning the jagtape drivers...
- >
- > When, if ever, will the no-swap device be available in the jagtape
- > driver? It seems that at this juncture that this poses a glaring
- > incompatability issue for those of us forced (kicking and screaming,
- > of course) into heterogeneous environments.
-
- The Jaguar is by default a no-swap device. So the answer is that it
- is already there. In the next release, you will be able to swap to
- the Jaguar tapes, though I don't know that anyone would want to.
-
- >
- > Additional caveat. Over a year ago I was working on 9-Track tape
- > problems with the head of the engineering at M4 down in Florida.
- > At this time, M4 mentioned that they had been working with SGI on
- > including specific device drivers for their 9-Track tape drive so that
- > its performance could be optimized. Currently, one must use the Kennedy
- > tape driver by modifying the SCSI-Vendor and SCSI-ID fields in the
- > /usr/sysgen/master.d/[jagtape,tpsc] files. Though this is a solution
- > which works, the performance of a very nice tape drive is not realized.
-
- There is no reason why the M4 should not work at full speed, unless
- they have some "slow" mode that they go into by default.
-
- >
- > I would appreciate any info anyone has!!
- >
- > -fred b.
- >
-
- jeremy
-
-