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Orchestrating a brigher world

USA

D3847 Hard Drive

Capacity Formatted: 1,620 MB
Per Disk: 540 MB
Configuration Information
Switches SW1-1 = "off" (factory use only)
SW1-2 = "off" (start command disable)
SW1-3 = "on" (parity check enable)
SW1-4 = "on" (= SCSI ID-0; bit value = 1)
SW1-5 = "on" (= SCSI ID-1; bit value = 2)
SW1-6 = "on" (= SCSI ID-2; bit value = 4)
Dimensions
Height 1.0 in/25.4 mm
Width 4.0 in/101.6 mm
Depth 5.74 in/146 mm
Weight 1.25 lb/0.6 KG
Disk Configuration
Disk Size 3.5"
Disks 3
Data Heads 6
Data Surfaces 6
Tracks/Surface 3,678
Track Density 4,000 tpi
Bit Density 100,000 bpi
Record Method PRML (8-9 code)
Rotational Rate 4,500 RPM
Start/Stop Time 15 sec typical
Environmental
Temperature Operating = 5° to 50° C
Non-operating = -40° to 60° C
Humidity Operating = 8% to 80%
Non-operating = 8% to 90%
Thermal Grad 20° C/Hr max
Shock Operating = 5 G (1/2 sine, 11 ms)
Non-Operating = 75 G (1/2 sine, 11 ms)
Vibration Oper = 0.5 G @ 5-100 Hz
Non-Op = 5 G @ 5-100 Hz
Performance Specifications
Seek Times Average = 11 ms
Track to track = 3 ms
Maximum = 22 ms
Latency, Avg 6.67 ms
Cache Memory Read = 64 KB
Write = 64 KB
Interface SCSI-2
Data Transfer To/from media = 10.0 MB/sec
To/from buffer:
Synchronous = 10.0 MB/s
Asychronous = 5.0 MB/s
Power
Voltage Required +5V/+12V
Power Dissipation Read/write/seek = 4.0 watts
Sleep mode = 1.8 watts
Reliability
MTBF 300,000 POH
MTTR < 30 minutes
Error Rate Recoverable = <1 per 10-10th bits
Un-recoverable = <1 per 10-13th bits
Seek = <1 per 10-7th bits