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From: moto@ucbcad.berkeley.edu (EDIF Committee)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 20MB or 30MB?
Message-ID: <1589@ucbcad.berkeley.edu>
Date: Sat, 30-May-87 23:32:32 EDT
Article-I.D.: ucbcad.1589
Posted: Sat May 30 23:32:32 1987
Date-Received: Tue, 2-Jun-87 00:54:59 EDT
References: <20060@sun.uucp>
Reply-To: moto@cad.Berkeley.EDU.UUCP (EDIF Committee)
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Organization: UC Berkeley, CAD group
Lines: 9


According to this months PC magazine, the diffference between a 20MB and
30MB drive is usually ONLT the controller. The 30MB uses RLL format while
the 20MB uses the older MFM. Not all drives CAN use RLL controllers,
but it seems that the seagate ST 235 is one that can. Thats why you see it advertised for both densities.
I have an ST225 that has worked fine for a year if thats any reccomendation -
too slow for a PC/AT, but fine for a PC-XT (65 ms access time)
Mike
.