CDC 9771 experiences?

[Mark Plotnick]

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