Multi-track density direct access storage device

Details Multi-track density direct access storage device Multi-track density direct access storage device

1996-08-27

1999-12-07

Faber, Alan

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 9801, 360 7702, 360 7804, G11B 509

Patent

active

059993510

ABSTRACT:
A multi-track density direct access storage device is disclosed. In accordance with a preferred embodiment of the present invention, a direct access storage device for data storage within a data processing system comprises a housing, a rotatable spindle, at least one disk, and several heads. The disk is fixedly mounted to the rotatable spindle, and the rotatable spindle is rotated by a motor within the housing. A first disk surface of the disk has a first track density and a second disk surface of the disk has a second track density; wherein the second track density is preferably greater than the first track density. Each of the several heads contains a transducer to read and write information from and to the disk during the disk rotation. Under this configuration, the lower storage density first disk surface is utilized to store data that are frequently accessed while the higher storage density second disk surface is for storage capacity supplementation such that the total data storage capacity of the direct access storage device can be increased without degrading the data-accessing performance.

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