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Path: utzoo!linus!philabs!seismo!hao!hplabs!sri-unix!kevinw@su-dsn
From: kevinw%su-dsn@sri-unix.UUCP
Newsgroups: net.micro
Subject: ds vice ss disks
Message-ID: <13921@sri-arpa.UUCP>
Date: Tue, 22-Nov-83 16:31:00 EST
Article-I.D.: sri-arpa.13921
Posted: Tue Nov 22 16:31:00 1983
Date-Received: Sun, 27-Nov-83 02:28:58 EST
Lines: 18

the only real difference between ds and ss disks is that the manufacturer
says that they are something different and asks for more bucks for them.
when you buy a ds disk they are claiming that they have tested both sides
and that they are ok.  when you buy a ss disk you are only getting a disk
which has been tested on one side -- not both -- thus they are making no
statement at all about the other side.  typically they are both perfectly
good, just don't expect the manufacturer to tell you that (and lose money?).
some ds disks which do not pass are sold as ss disks, but they are marked
by a pin hole somewhere on the disk (i believe) to signify that they failed
some kind of test.  if you REALLY need guarenteed (well, sortof) ds disks,
then by all means buy ds disks (i did just to be completely safe), but
they probably aren't worth the extra money unless you can't afford to lose
one.

cheers,
(and TANSTAAFL...)
  -- Kevin
     kevinw@su-dsn