DRIVE SERIES SPECIFICATIONS
DRIVE SPECIFICATIONS - MODEL 1991AV "Scorpio" Series
Formatted Capacity
Per Drive 9,090 MB
Bytes per Sector 512
Sectors per Track Variable
Cylinders 4,477
Performance
Data Rate
Max. Sustained 6.9 MB/sec
Min. Sustained 4.1 MB/sec
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 1991WAV 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