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