Disk drive having optimized spindle speed for environment

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record

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360 9702, 360 69, 360 71, 360 75, G11B 1546

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active

06067203&

ABSTRACT:
A disk storage device in which two or more discrete disk velocities are used is disclosed. The disk velocity is selected using operating environmental conditions. Various types of sensors may be used to detect the environmental conditions or the environmental conditions may be input by a user. The allocation of track locations on a disk into zones reduces the number of zone bit frequencies the storage device must handle when multiple frequency zones are used in connection with the various spindle speeds.

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