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Path: utzoo!linus!philabs!cmcl2!acf4!tsc2597
From: tsc2597@acf4.UUCP (Sam Chin)
Newsgroups: net.micro.mac
Subject: Re: New Product Idea: external ram disk
Message-ID: <1030026@acf4.UUCP>
Date: Thu, 2-May-85 23:12:00 EDT
Article-I.D.: acf4.1030026
Posted: Thu May  2 23:12:00 1985
Date-Received: Sat, 4-May-85 07:22:01 EDT
References: <1255@eagle.UUCP>
Organization: New York University
Lines: 15

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The last time I looked in PC Week the prices of 256K Ram Chips were down to
about $175 a megabyte (36 256K chips at <$4.99 a piece).  With all the new
LSI ram controller chips, I bet you could put about 5Mb on a Ram Drive for
under $1000 by the years end.  For the price of a hyperdrive, you could
probably get a 20Mb ram disk. People who deal with high performance
architechtures seem to be of the opinion that disk cache should be 10X main
memory. You can use the cheapest possible ram for ram disk - 300-400 ns
stuff and still get amazing performance. With ram disks of these sizes,
backup power is totally necessary but the UPS I've seen run under $400.

                          Sam Chin
                          allegra!cmcl2!acf4!tsc259
                          tsc2597.acf4@nyu.ARPA