Async negotiation (Was: 2.0.36/5.1.4 and BIOS settings)

[Doug Ledford]

Randy Gobbel wrote:
> 
> On 12-Dec-98 at 01:22, Doug Ledford (dledford at redhat.com) wrote:
> > Dirk Lutzebaeck wrote:
> > >
> > > Doug Ledford writes:
> > >  > drive in question.  If that FAQ says to always use async mode
> > >  > regardless of the make or model of drive then they need to bite me.
> > >  > There are lots of DAT drives out there that work great at sync speeds.
> > >  > HP and SONY tend to run forever sync.  If Seagate DATs have a problem
> > >  > in specific then that's another matter, but last I knew, Seagate only
> > >  > says to disable sync negotiation on the model ST8000N drives or
> > >  > something like that.  It's a
> > >
> > > Doug, I was wrong to say "all drives". This is from "System Lockup or
> > > Freezing problems when running the tape backup" of the Seagate site: (1)
> > >
> > >   "Synchronous Negotiation should be disabled for all Python
> > >    tape drives. Leave Synchronous Negotiation enabled for the
> > >    Peregrine or Scorpion tape drives."
> 
> I haven't been following this thread, but just happened to see this one
> message.  I went through a very similar hassle with my Seagate (Conner) CTT8000
> TR4 tape drive some months ago.  I called both Seagate and Adaptec tech
> support, as I recall they both told me the tape should be async, and they were
> both wrong.  The tape gets set up in synchronous mode and works perfectly.  It
> does *not* work correctly if I force async mode.  As Doug says, it seems most
> likely that there's something wrong with the application.  I have yet to find a
> Unix backup utility that I really like, having been spoiled by Retrospect on
> the Mac.

I've not tried Amanda, but I was particularly fond of Arkeia
(www.knox-software.com) when I still had my DAT tape drive.  Now that I
don't have a tape drive any more, it's kind of a moot point for me :)


-- 
  Doug Ledford   <dledford at redhat.com>
   Opinions expressed are my own, but
      they should be everybody's.

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