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National Stock Number:
7025-01-384-1601
Federal Supply Class:
7025
National Item Identification Number:
013841601
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:
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Techincal Specification:
| DRIVE QUANTITY | 1 | | DRIVE SIZE | 3.50 | | ACCESS TIME IN MILLISECONDS | 15.0 | | DATA STORAGE CAPACITY | 212.80 MEGABYTES | | DESIGN TYPE | HARD DISK | | HEAD TYPE AND QUANTITY | 2 READ AND 2 WRITE | | INTERLEAVE RATE RATIO | 2.83 | | OVERALL HEIGHT | 1.000 INCHES NOMINAL | | OVERALL LENGTH | 5.750 INCHES NOMINAL | | OVERALL WIDTH | 4.000 INCHES NOMINAL | | POWER SOURCE | EXTERNAL | | UNIT DESIGN | INTERNAL | | TRANSFER RATE IN MEGABYTES PER SECOND | 9.0 |
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