Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!ncar!midway!gargoyle!chinet!saj
From: saj@chinet.chi.il.us (Stephen Jacobs)
Newsgroups: comp.sys.atari.st
Subject: Re: hard drives
Summary: ST 296 can handle 1:1 interleave if controlled by BMS 200
Keywords: disk interleave SCSI
Message-ID: <1990Dec18.032534.17936@chinet.chi.il.us>
Date: 18 Dec 90 03:25:34 GMT
References: <1990Dec14.014112.6251@ecst.csuchico.edu> <1990Dec14.172830.14752@uvm.edu> <7062@tekgen.BV.TEK.COM>
Organization: Chinet - Public Access UNIX
Lines: 12

I have a ST296N running full speed at 1:1 interleave on my ST.  The key is
that it's attached to a BMS 200 host adapter.  Vance from BMS explained the
problem over the phone a long time back; here's how I remember it:
   The ST296N requires that the host adapter acknowledge receipt of a data
package within a time window that's at the very low edge of what the SCSI
standard dictates.  Most host adapters at the time didn't respond quite fast
enough to satisfy the drive when it was formatted 1:1.  The BMS 200 responds
fast enough.  Perhaps other host adapters do by now, I'd have no way of 
knowing.
   Anyone from Seagate reading this?  Care to give more details?

                                  Steve J.    saj@chinet.chi.il.us