RA60 Disk Drive

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RA60
Manufacturer: Digital Equipment Corporation
Year Introduced: 1982
Drive Controller(s): all SDI controllers
Capacity: 205 Mbytes (formatted)
Transfer Rate: 1.3 Mbytes/sec
Average Access Time: 50 msec
Revolutions per Minute: 3600 1/min
One Track Seek Time: 6.7 msec
Average Seek Time: 41.7 msec


Citation from the combined DEC RA60/RA80/RA81 1982 sales brochure:

RA60 Disk - The Removable Media Solution
The RA60 is the industry's highest capacity and lowest price-per-megabyte rack mounted, removable media disk. With 205 megabytes of user formatted capacity, 615 megabytes are available in a 42-inch high cabinet - 50% more than any other removable media product. The RA60 provides 205 megabytes of removable media flexibility for $15,000.

An open RA60

4.3 BSD disktab

ra60|RA60|DEC RA60 Removable:\
    :ty=removable:ns#42:nt#4:nc#2382:\
    :pa#15884:ba#8192:fa#1024:\
    :pb#33440:pc#400176:\
    :pg#82080:bg#4096:fg#512:\
    :ph#268772:bh#4096:fh#1024: