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National Stock Number:
7025-01-572-0918
Federal Supply Class:
7025
National Item Identification Number:
015720918
Description:
DISK DRIVE UNIT
Detail:
An electromechanical item which accepts and systematically retains digital input data in such a manner as to facilitate the rapid recovery of stored information. The item may or may not consist of disk(s) some of which are removable, hard, removable disk packs, fixed disks, or removable flexible, each surface coated with a material susceptible to spot magnetization, integral writing, a drive motor and its mechanical linkage, and data translating heads for impressing on or removing from the disk surface data in digital form. The item is a component of an electronic computer. See also, MAGNETIC DRUM, DATA STORAGE; CORE MEMORY UNIT.
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Manufacturer Information:
| 1074744 | 1KH72 | CDW GOVERNMENT LLC | | ST940815A | 1KH72 | CDW GOVERNMENT LLC | | ST940815A | 65867 | SEAGATE TECHNOLOGY |
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Techincal Specification:
| ACCESS TIME IN MILLISECONDS | 5.60 | | DATA STORAGE CAPACITY | 40.0 GIGABYTES | | OPERATING TEMP RANGE | -1.0 TO 60.0 CELSIUS | | OVERALL HEIGHT | 0.374 INCHES NOMINAL | | OVERALL LENGTH | 3.945 INCHES NOMINAL | | OVERALL WIDTH | 2.750 INCHES NOMINAL | | SPECIAL FEATURES | GUARANTEED SECTORS: 78,340,160;BYTES PER SECTOR: 512; PHYSICAL READ/WRITE HEADS: 1; DISCS: 1; CACHE: 8 MBYTES; RECORDING DENSITY: 835K BPI;TRACK DENSITY: 150K TPI; AREAL DENSITY: 132 GBITS PER INCH(SQUARED);SPINDLE SPEED: 5400 RPM; INTERNAL DATA TRANSFER RATE: 352 MBITS/SEC MAX; I/O DATA TRANSFER RATE: 100 MBYTES/SEC MAX; AVERAGE LATENCY: 5.6 MSEC; POWER-ON TO READY: 3.0 SEC; STANDBY TO READY: 3.0 SEC; TRACK-TO-TRACK SEEK TIME: 1.0 SEC (READ), 1.5 SEC (WRITE); AVERAGE RANDOM SEEK, WRITE: 13.0 MSEC; AVERAGE RANDOM SEEK: 11.0 MSEC; AVERAGE RANDOM SEEK: 12.5 MSEC; FULL-STROKE SEEK: 22MSEC, 24MSEC MAX; STARTUP CURRENT: 1.0 AMPS; SEEK POWER: 2.0 WATTS; READ POWER: 2.0 WATTS; WRITE POWER: 1.8WATTS; AMBIENT TEMPERATURE: 0-60C (OPERATING), -32-70C (NONOPERATING) | | UNPACKAGED UNIT WEIGHT | 0.216 POUNDS |
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