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From: mp@allegra.UUCP (Mark Plotnick)
Newsgroups: net.periphs,net.unix-wizards
Subject: CDC 9771 experiences?
Message-ID: <4079@allegra.UUCP>
Date: Fri, 10-May-85 18:14:13 EDT
Article-I.D.: allegra.4079
Posted: Fri May 10 18:14:13 1985
Date-Received: Sat, 11-May-85 03:38:10 EDT
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 17
Xref: watmath net.periphs:752 net.unix-wizards:13125

We've had a CDC9771 (825 MB) disk on trial for a month, and haven't
had any problems once a working driver was hacked together (it
almost, but not quite, emulates a big rm80), so we're probably going to
order some more.  Please tell us if we should do otherwise...

Running the Berkeley benchmarks from /usr/doc/diskperf showed it to be
about 6% faster than an eagle (comparing roughly 200meg filesystems in
the neighborhood of the high-numbered cylinders); if you have more
comprehensive benchmarks, I'll be glad to run them.  Sizewise, it's
about an inch and a half deeper than an eagle (other dimensions about
the same), and costs a little under $12K from several vendors we
checked with; if your company has a contract with CDC, you may want to
check out their price, it could be much less.  You may have to buy a
new controller for it (we used an SC7000 from Emulex, since the 9771
wouldn't work with our SC780).
	Mark Plotnick
	allegra!mp