Micropolis 1991-Models

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - MODEL 1991

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

Drive Configuration Information

(Board Layout and Jumper Options)

Drive Warranty Information