Micropolis 4221-Series

DRIVE SERIES SPECIFICATIONS

DRIVE SPECIFICATIONS - MODELS 4221 and 4210

Formatted Capacity

Per Drive

	Model 4221		2050 MB

	Model 4210		1060 MB

Bytes per Sector		512

Sectors per Track		Variable
	
Cylinders			4,050

Performance

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

Wide Synchronous		up to 20 MB/sec

Narrow Synchronous		up to 10 MB/sec

Asynchronous			up to 5 MB/sec

Internal Data Rate		49 to 81 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			Single-ended

(Wide/Single-Ended or Wide/Differential are available as options)

Power Requirements

+12V +/-5% (average)			0.56 A

+12V +/-5% (max during start-up)	1.53 A

+5V +/-5% (average)			0.70 A



Power Dissipation, typical, idling	10.5 Watts

Power Dissipation, typical, seeking	11.5 Watts

Drive Configuration Information

(Board Layout and Jumper Options)

Drive Warranty Information