[net.micro] How hard and fast are fast hard disks?

ded@aplvax.UUCP (03/22/84)

Here's a question about hard disks.  No, that's not true.  Here are
TWO questions about hard disks.

	1.  Has anyone ever taken a hard disk aboard a Navy ship (or
	similar rough operational environment)?  If so, did it operate 
	properly?

	2.  I see hard disk advertisements claiming 9.7 Mbit interfaces.  
	How valid is this spec?  Namely, can the disks lay the data
	down on the platter at this speed?  Or do these fast interfaces
	feed a much slower process?

Whoops, I've actually asked FIVE questions, haven't I?  Omigosh, now there's
SIX questions, isn't there?  Am I caught in an infinite loop?  Thanks for
any help with the above?
-- 

					Don Davis
					JHU/APL
				...decvax!harpo!seismo!umcp-cs!aplvax!ded
				...rlgvax!cvl!umcp-cs!aplvax!ded

SHahn@SUMEX-AIM.ARPA (03/27/84)

From:  Sam Hahn <SHahn@SUMEX-AIM.ARPA>

Don't have info on ship-board drives, but the 10Mbit transfer rate is, if I
recall correctly, a new proposed standard known as ESDI, an outgrowth of the
ST506 5Mbit standard.  This was proposed because(!) of the higher storage 
density possible on new media, and for burst transfers, DOES transfer at 
10Mbit/sec.
				-- shahn@sumex
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