Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!mit-eddie!killer!elg
From: elg@killer.DALLAS.TX.US (Eric Green)
Newsgroups: comp.sys.amiga
Subject: Re: Hard Disk drives
Message-ID: <5881@killer.DALLAS.TX.US>
Date: 22 Oct 88 23:18:12 GMT
References: <12623@eecae.UUCP>
Distribution: na
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 28

in article <12623@eecae.UUCP>, conklin@eecae.UUCP (Terry Conklin) says:
> F.) Another observation. We've been looking at everything for about 2 or 3
>     weeks now, trying to figure out what hard disk to get. It seems no one
>     has made either:
>           A A2000 bus ST-506 controller card, a nice, cheap controller to 
>           access all those nice, cheap IBM hard disks
>  
>           B an RLL version of the above. At the computer store I

The A2090(a) will support ST-506 drives. I cannot comment on its speed
when doing so. 

If you want to control RLL drives, the best route is to get the
cheapest, scuzziest SCSI controller available (C Ltd.), and then use
an Adaptec RLL-to-SCSI adaptor. The reason for the C Ltd. controller
is because using a faster controller won't get you any speed increase
using the converter route, so why pay for DMA etc.? I've managed to
get nearly 100kbytes/second out of it, but that was only because I was
issuing I/O requests of 256Kbytes at a time ;-).

As far as price goes, you can get the C Ltd. + Adaptec for less than
what a 2090A will cost you...

--
Eric Lee Green    ..!{ames,decwrl,mit-eddie,osu-cis}!killer!elg
          Snail Mail P.O. Box 92191 Lafayette, LA 70509              
It's understandable that Mike Dukakis thinks he can walk on water.
He's used to walking on Boston harbor.