Differences between MFM/RLL/IDE/ESDI/SCSI drives?

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#7559

From: Dwayne R Farley
Date: Tue, 12 Feb 1991 21:05

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Greetings!

I'm looking at purchasing a new computer for my parents and in the
package there is an option to replace a 40MB IDE drive with a
100MB Rodime RLL drive.  The sales person said that this drive is
"certified" at 100MB, and not just a 65MB MFM drive using an RLL controller.
My question is is this a good deal?  Is the sales person correct that
a 100MB RLL is safe?  I've heard that RLL's can cause problems.

Secondly, can someone explain the differences between RLL/MFM/IDE in
an understandable manner?  How about ESDI/SCSI?

I'll post a summary of letters sent to me at neptune@cup.portal.com

Dwayne Farley

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Message-ID: <39194@cup.portal.com>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!portal!cup.portal.com!Neptune

References: <1435@tsdiag.ccur.com> <1991Feb12.032822.28560@kth.se>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!portal!cup.portal.com!Neptune
From: Neptune@cup.portal.com (Dwayne R Farley)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Differences between MFM/RLL/IDE/ESDI/SCSI drives?
Message-ID: <39194@cup.portal.com>
Date: 12 Feb 91 21:05:31 GMT
References: <1435@tsdiag.ccur.com> <1991Feb12.032822.28560@kth.se>
Distribution: usa
Organization: The Portal System (TM)
Lines: 16

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