Control Data Corp’s Imprimis Technology and Micropolis Corp are setting the capacity standard for the next generation of 5.25 Winchester disk drives, each coming out with models that store 1.2Gb unformatted. The Imprimis offering is the Wren VII, which includes SCSI interface, and is based on the 766Mb Wren VI with the more efficient zoned bit recording technique. No pricing or other details of the drive have been given, but samples are due in the second quarter next year, with volume early in the fourth quarter 1989. The offerings from Micropolis, Chatsworth, California features average seek times 14mS and data transfer rates of 20 Megabits per second. The new drives are the 1510 Series model 1518-15, with the Enhanced Small Device Interface, and the 1590 Series model 1598-15, with embedded Small Computer System Interface, and like the Imprimis drive, are based on Micropolis’ 760Mb and 380Mb drives. Samples are again set for second quarter of 1989, volume in the fourth quarter. The Micropolis drives are expected to go for $2 per Mb in 1,000-unit OEM quantities.
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