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Orchestrating a brigher world

USA

D5655 Hard Drive

Capacity Formatted: 153.5 MB
Unformatted: 179.8 MB
Configuration Information
Switches Drive Address Switch:
DS3 "on" = address 4; bit value = 4
DS2 "on" = address 2; bit value = 2
DS1 "on" = address 1; bit value = 1
Terminating Resistor Switches:
For a single drive configuration, set all three 4-position switches to "on."
For multiple drive configuration, device at furthest end should be all "on," and
all other devices should be "off."
Mode Switches:
Mode P = 1 enables write protect
Mode S = 1 enables hard sector mode
Mode B = 0 disables byte clock mode
Mode A = 0 disables address mark found
Mode M = 0 enables motor start at pwr-on
Mode C = 0 disables set byte/sector cmd
Dimensions
Height 1.6 in/41 mm
Width 5.7 in/146 mm
Depth 8.0 in/203 mm
Weight 3.7 lbs/1.7 KG
Disk Configuration
Bytes/Sector 256
Record Method 2,7 RLL
Rotational Rate 3,573 RPM
Start/Stop Time Start = 20 sec typical Stop = 20 sec typical
Disk Size 5.25"
Disks 4
Servo Heads 1
Data Heads 7
Data Surfaces 7
Tracks/Surface 1,224
Track Density 1,240 tpi
Bit Density 19,610 bpi
Sectors/Track 64
Environmental
Wet Bulb, Max 29° C max
Shock Operating = 2.0 G (10 ms)
Non-operating = 40 G (10 ms)
Vibration Operating = 0.2 G
Non-operating = 0.5 G
Temperature Operating = 5° to 45° C
Non-operating = -40° to 60° C
Humidity Operating = 8% to 80%
Non-operating = 8% to 90%
Performance Specifications
Seek Times Average = 18 ms
Track to track = 4 ms
Maximum = 40 ms
Latency, Avg 8.4 ms
Interface ESDI
Data Transfer 1.25 MB/sec
Power
Voltage Required +5V/+12V
Power Dissipation Read/write/seek = 20 watts
Reliability
MTBF 30,000 POH
MTTR < 30 minutes