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Article #44071Re: What do I want to see in the Apple of the 90's?
From: Wilson Chan
Date: Sun, 17 Dec 1989 21:38
Date: Sun, 17 Dec 1989 21:38
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1161 bytes
In article <6773@tank.uchicago.edu> phd_ivo@gsbacd.uchicago.edu writes: > >>Anyone who says 90 ms seek time isn't slow is lying or brain-dead. > >How about 90ms over a 100 terabyte surface :-)? If you restricted yourself to >half the OD surface (128MB), you get approx. half the average access time. > >There is of course another problem, if I am correct: To write, the heads must >pass twice over the surface (once to erase, I think). > >/ivo welch To quote Sept. 1989 issue of UnixWorld: "Writing is done in three passes-- an erase pass, a write pass, and a verify pass. ...writing took about the same amount of time as reading..." (p.82) wilson@media-lab.media.mit.edu Standard disclaimer applies
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!wuarchive!mit-eddie!mit-amt!wilson From: wilson@mit-amt.MEDIA.MIT.EDU (Wilson Chan) Newsgroups: comp.sys.mac,comp.sys.next Subject: Re: What do I want to see in the Apple of the 90's? Message-ID: <1225@mit-amt.MEDIA.MIT.EDU> Date: 17 Dec 89 21:38:09 GMT References: <6773@tank.uchicago.edu> Reply-To: wilson@media-lab.media.mit.edu (Wilson Chan) Organization: MIT Media Lab, Cambridge MA Lines: 20