Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!att!mcdchg!ddsw1!ddsw1!karl
From: karl@ddsw1.MCS.COM (Karl Denninger)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Disk controllers for AT
Keywords: RLL, ESDI, SCSI
Message-ID: <[4172.3]comp.ibmpc;1@ddsw1.MCS.COM>
Date: 14 Jul 89 14:00:03 GMT
References: <579@holin.ATT.COM> <11250083@hpldola.HP.COM>
Lines: 31

>Response 2 of 2 (4172) by ppa at hpldola.HP.COM on Thu 13 Jul 89 21:33
>[Paul P. Austgen]
>
>I just started using an Adaptec 2372 controller with 1:1
>interleaving.  I am really impressed with the performance.  I
>wouldn't buy anything less now that I've seen it.

Try using that board with SCO Xenix and watch the performance disappear.

Try calling Adaptec with a question and watch them scratch their head (after
you get through 6 hours of busy signals and holds!)

Try using the WD1006-V/SR2 and watch all that performance come back and
more, and in addition watch the controller work flawlessly with more drives
for a longer time.  

Call WD with a question; you get an answer, without the indefinite holds and
busys.

(The WD1006 has a true track buffer; the ACB does not.  Thus, if your
driver(s) are the least bit slow you get hosed on each and every disk
read/write and the performance disappears.  The WD board does not have this
problem.  The WD is also a true digital design; note that nice trimmer pot
on the ACB board.)

Then toss that ACB2372 where it belongs.  In the trash.

--
Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl)
Public Access Data Line: [+1 312 566-8911], Voice: [+1 312 566-8910]
Macro Computer Solutions, Inc.  "Quality Solutions at a Fair Price"