This is the top of the page.
Jump to main content.

Please note that JavaScript and style sheet are used in this website,
Due to unadaptability of the style sheet with the browser used in your computer, pages may not look as original.
Even in such a case, however, the contents can be used safely.

Orchestrating a brigher world

USA

D3142 Hard Drive

Capacity Formatted: 44.7 MB Unformatted: 53.4 MB
Configuration Information
Switches Drive Address Switch: SW2-1 "on," all others "off" = addr 1
SW2-2 "on," all others "off" = addr 2
SW2-3 "on," all others "off" = addr 3
SW2-4 "on," all others "off" = addr 4
Terminating Resistor Switch:
Serial configuration-SW1-1 always "off";
if one drive, set SW1-2 thru 8 to "on."
If more than one drive, set SW1-2 thru 8 to "off."
Parallel configuration-SW1-1 may be "on" or "off" depending on HDD controller.
Set SW1-2 thru 8 to "on."
Dimensions
Height 1.6 in/41 mm
Width 4.0 in/101.6 mm
Depth 5.8 in/146 mm
Weight 2.0 lb/0.9 KG
Disk Configuration
Disk Size 3.5"
Disks 4
Data Heads 8
Data Surfaces 8
Tracks/Surface 642
Track Density 850 tpi
Bit Density 14,000 bpi
Sectors/Track 17 (RLL = 26 sectors)
Bytes/Sector 512
Record Method MFM
Environmental
Temperature Operating = 5° to 50° C
Thermal Grad 10° C/Hr max
Shock Operating = 2 G (10 ms) Non-operating = 40 G (10 ms)
Vibration Operating = 0.2 G Non-operating = 0.5 G
Performance Specifications
Rotational Rate 3,600 RPM
Start/Stop Time 15 seconds typical
Seek Times Average = 28 ms Track to track = 8 ms Maximum = 54 ms
Latency, Avg 8.33 ms
Interface ST412
Data Transfer 625 KB/sec
Power
Voltage Required +5V/+12V
Power Dissipation Ready mode = 9.2 watts
MTTR 30 Minutes
Reliability
MTBF 30,000 POH
Error Rate Recoverable = <1 per 10-10th bits