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National Stock Number:
7025-01-232-7371
Federal Supply Class:
7025
National Item Identification Number:
012327371
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:
| QC-ST225 | 0H021 | QUADRANT COMPONENTS INC | | ST-225 | 0M0E2 | HAMPTON ROADS COMPUTER COMPANY INC. DIV HAMPTON ROADS COMPUTER CO. INC | | ST-225 | 1Y977 | AMERICAN COMPUTER RESOURCES INC | | ST225 | 65867 | SEAGATE TECHNOLOGY | | Z-217-22 | 66285 | ZENITH DATA SYSTEMS CORP FEDERAL SYSTEMS GROUP | | ST-225 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | | Z-217-22 | 67177 | ZENITH ELECTRONICS CORPORATION | | Z-217-22 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |
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Techincal Specification:
| DRIVE QUANTITY | 2 | | DRIVE SIZE | 5.25 | | DRIVE HEIGHT | HALF | | ACCESS TIME IN MILLISECONDS | 65.0 | | DATA STORAGE CAPACITY | 21.40 MEGABYTES | | DESIGN TYPE | HARD DISK | | OVERALL HEIGHT | 1.630 INCHES NOMINAL | | OVERALL LENGTH | 8.000 INCHES NOMINAL | | OVERALL WIDTH | 5.750 INCHES NOMINAL | | SPECIAL FEATURES | 21.4 MEGABYTES OF FORMATTED CAPACITY; DESIGNED FOR SINGLE USER DESKTOP SYSTEMS OR AS AN UPGRADE FOR A PERSONAL COMPUTER; 65 MILLISECOND AVERAGE ACCESS TIME; STANDARD HALF-HEIGHT; DATA TRANSFER RATE OF 5.0 MEGABITS PER SECOND | | TRANSFER RATE IN MEGABYTES PER SECOND | 5.0 | | UNIT DESIGN | INTERNAL |
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