Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!rutgers!att!mcdchg!ddsw1!ddsw1!karl
From: karl@ddsw1.MCS.COM (Karl Denninger)
Newsgroups: comp.sys.ibm.pc
Subject: Tranfer Rates
Message-ID: <[2571a177:7075.1]comp.ibmpc;1@ddsw1.MCS.COM>
Date: 27 Nov 89 22:00:04 GMT
References: <8911252135.AA03146@cie.uoregon.edu>
Lines: 22

>Item 7075 (0 resps) by scott at CIE.UOREGON.EDU on Mon 27 Nov 89 14:33
>[<No Identification>]    Subject: Tranfer Rates
>(10 lines)
>
>
>	What are the transfer rates for various hard disk formats on a
>	80286 or 80386 pc clone? Specifically, how fast can an MFM format
>	hard disk using a 1:1 16 bit controller transfer data? And the same
>	for an RLL and ESDI format hard disk, and any other formats if you
>	know of them. Usually such figures are given in bits/s or bytes/s.

All these are theoretical maximum values.  Anything in excess of these
numbers are coming from a cache (either hardware or software) somewhere.

MFM 1:1			500KB/sec		(Kilobytes/second)
RLL 1:1			750KB/sec
ESDI 10Mhz 1:1		1024KB/sec		(10Mhz drives)
ESDI 15Mhz 1:1		1536KB/sec		(15Mhz drives)

--
Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl)
Public Access Data Line: [+1 708 566-8911], Voice: [+1 708 566-8910]
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