Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!samsung!uunet!jwt!john
From: john@jwt.UUCP (John Temples)
Newsgroups: comp.sys.ibm.pc.hardware,connect.audit
Subject: Re: Conner 200M IDE drive
Message-ID: <1991Apr3.035310.11481@jwt.UUCP>
Date: 3 Apr 91 03:53:10 GMT
References: <1991Mar31.162532.9509@ibmpcug.co.uk>
Organization: Private System -- Orlando, FL
Lines: 25

In article <1991Mar31.162532.9509@ibmpcug.co.uk> hdrw@ibmpcug.co.uk (Howard Winter) writes:
>2. What is the achievable data-transfer rate ?

I've used the CP3204 under both DOS and UNIX, and the transfer rate was
pathetic.  I/O benchmarks (ones that do more than just read the same
64K over and over) showed between 80 and 150 KB/sec read and write
rates.  Even worse than 1:1 ST-506/MFM.  I suspect the controller on
the drive isn't fast enough to run at 1:1 interleave, but I don't have
the appropriate software to reformat it and find out.  I would love to
hear about someone's experiences after reformatting one of these to a 
looser interleave.

>I am hoping for about 1M/Sec from the Conner.  Is this possible ?

Sure, if your only application is Coretest.  I'm starting to suspect
people have been wooed by the small, quiet packaging of IDE, its fast
seek times, cheap interface cards, easy cabling, and misleading
Coretest results.  I'm starting to suspect it's a well packaged, well
marketed performance dog.

I bought a 15 MHz ESDI drive, and it absolutely blows the Conner away.
I won't recommend another IDE drive until I see them show me respectable
transfer rates.
-- 
John W. Temples -- john@jwt.UUCP (uunet!jwt!john)