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From: zampetti@eniac.seas.upenn.edu (Marc Zampetti )
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: IDE vs SCSI vs ESDI vs ???
Message-ID: <43881@netnews.upenn.edu>
Date: 29 May 91 20:13:13 GMT
References: <1991May29.194400.8044@aero.org>
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Reply-To: zampetti@eniac.seas.upenn.edu (Marc Zampetti )
Organization: University of Pennsylvania
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	Good for you. Moving out of MFM and RLL is the best thing you can
do when you are upgrading. The choice of drive you want will depend
upon the size you are willing to go for. If you want something from 40 to 
150 Mb, then IDE is the way to go. It is fast, usually 15-20ms and fairly
cheap, I've seen 120Mb IDE kits for about $500. You can connect two
IDE drives to the same system, but you have to be careful about 
compatibility, becuase IDE is not completely standard. SCSI is just as fast
as IDE, but will cost a little more for the same stoarage range. But, if
you want greater than 150Mb, SCSI will probably be cheaper. The good thing
about SCSI is that one controller can usually drive up to 8 drives. You can
daisy chain them, even external drives, fairly easily. ESDI is the best for 
very high capacity, greater than 600Mb. This usually come with fast caching
controllers. They are the best cost wise once you get into the high capacity
area. I hope this helps.

Marc Zampetti
zampetti@eniac.seas.upenn.edu