Micropolis 4221WD-Series


DRIVE SPECIFICATIONS - MODEL 4221WD (Wide, Differential Interface)

Formatted Capacity

Per Drive				2,050 MB
Bytes per Sector 512
Sectors per Track Variable
Cylinders 4,150


Data Rate

Avg. Seek Time (including settling time)	8.9 msec
Avg. Rotational Latency 4.17 msec
Rotational Speed 7200 rpm +/- 0.5%

Data Transfer Rate at Interface

Synchronous			up to 20 MB/sec
Asynchronous up to 10 MB/sec
Internal Data Rate 49 to 83 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 Wide/Differential

Power Requirements

+12V +/-5% (average)				0.5 A
+12V +/-5% (max during start-up) 1.52 A
+5V +/-5% (average) 1.25 A

Power Dissipation, typical, idling 12.25 Watts
Power Dissipation, typical, writing 13.45 Watts
Power Dissipation, typical, reading 15.45 Watts
Power Dissipation, typical, seeking 13.5 Watts

Drive Configuration Information

(Board Layout and Jumper Options)

Drive Warranty Information