DRIVE SERIES SPECIFICATIONS
DRIVE SPECIFICATIONS - MODEL 1991 "Scorpio" Series
Formatted Capacity
Per Drive 9,090 MB
Bytes per Sector 512
Sectors per Track Variable
Cylinders 4,477
Performance
Data Rate
Avg. Seek Time (including settling time) 12 msec
Avg. Rotational Latency 5.56 msec
Rotational Speed 5400 rpm +/- 0.5%
Data Transfer Rate at Interface
Synchronous up to 10 MB/sec
Asynchronous up to 5 MB/sec
Internal Data Rate 47 to 77 Mbits/sec
MTBF (power-on hours) 650,000
Positioner Fully balanced rotary voice coil
Parking Automatic park and lock
General Functional Specifications
Interface Fast SCSI-2
Supports Full Common Command Set Yes
Drivers/Receivers 8-Bit ("Narrow") Single-Ended
(Model 1991W is 16-Bit Wide/Single-Ended)
Power Requirements
+12V +/-5% (average) 2.3 A
+12V +/-5% (max during start-up) 4.8 A
+5V +/-5% (average) 1.0 A
Power Dissipation, typical, idling 30 Watts
Power Dissipation, typical, seeking 33 Watts
(Board Layout and Jumper Options)
Drive Warranty Information
Downloads
Notes on OEM use
Micropolis model 1991 was also
sold OEM as DEC RZ58 (part no. VS0050-01-8)
and RZ58-E with all labeling and marking white-labeled for digital equipment corp.
