From: utzoo!decvax!cca!Chepponis@Cmu-20c@sri-unix
Newsgroups: net.micro
Title: More info on WD505 drive
Article-I.D.: sri-unix.3176
Posted: Wed Sep  8 18:19:22 1982
Received: Fri Sep 10 05:10:51 1982

From: Mike Chepponis 
I've gotten a lot of requests for more information on the Western Dynex WD505
drive.  Western Dynex Corp is at 3536 W. Osborn Road, Phoenix AZ 85019;
telephone 602/269-6401.  A large ad on page 26 of the 9/6/82 "Electronic News"
lists a price of $495 quantity one.

5.0 Megabytes formatted, 612 tracks/disk, 8192 bytes/track, 32 sectors/track,
256 bytes/sector.  Data Rate 5.0 Megabits/second.  Access times: 3.0 ms track-
to-track, 35 ms average, 55 ms maximum, 10 ms settling time.  Average latency:
8.33 ms.  Rotational speed 3600 RPM.  Recording density 9022 bits/inch. Track
density 345 tracks/inch. MTBF 11,000 POH. MTTR 30 minutes.  Preventative
Maintenance: none.  Design Life: 5 Years.  Error rates: hard errors - 1 in
10^12 bits read, soft errors - 1 in 10^10 bits read, seek errors - 1 in 10^6
seeks.  Power: +12 @ 2.5 Amps, +5 @ 1.5 Amps, power dissipation: 30 watts.
3.25 x 5.75 x 8.00 (inches) H x W x D; 5.0 pounds.  ST506 interface.  Maximum
of 4 drives/system.  Standard cartridge: ANSI X3B7/1981-54 (Cost: $50). Micro-
processor controlled, user programmable PROM.  Delivery: November 1982.

If anybody also gets this drive, I'd like to hear of your experiences.  Thanks,
chepponis@cmuc.
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