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From: hah@mipon3.intel.com (Hans Hansen)
Newsgroups: comp.sys.amiga
Subject: Re: Cheap disk drives
Message-ID: <1224@omepd>
Date: Fri, 13-Nov-87 04:48:55 EST
Article-I.D.: omepd.1224
Posted: Fri Nov 13 04:48:55 1987
Date-Received: Sun, 15-Nov-87 09:16:44 EST
References: <73@mithras> <303@uscacsc.UUCP> <186@dalcsug.UUCP>
Sender: news@omepd
Reply-To: hah@mipon3.UUCP (Hans Hansen)
Organization: Intel Corp., Hillsboro
Lines: 19

In article <186@dalcsug.UUCP> peter@dalcsug.UUCP (Peter Philip) writes:
$Now, I do know that when you buy a hard disk, you look for a low seek
$and access time, but in reality, what is the difference between a 
$drive with 65ns access time and 35ns access time?  Would this make
$a visible difference in normal operation?  How can I tell what are
$reasonable speeds for the various specifications given in the magazines?
$

The 65ns drive is used to replace all RAM in your system, the 35ns drive
is used to replace all of the RAM in the 25MHz 68020 system. :-)  By the
way where can I get either of these drives...  boy do I have an application...

Seriously the major difference between the 65ms(milli-second) drive and
the 35 or less ms drives is the seek time overhead.  For multiple disk
I/O intensive programs this amounts to much lost/wasted time.

$- Peter Philip

Hans		hah@inteloa.intel.com