Disk drive power management system and method

Details Disk drive power management system and method Disk drive power management system and method

1995-04-13

1998-06-30

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 69, 369 50, 39575006, G11B 1546

Patent

active

057742928

ABSTRACT:
A system and method for optimizing power consumption by a disk drive unit. The system and method monitor and analyze historical use data and calculate a predicted inactivity duration. The predicted inactivity duration is used to power-down the rotational speed of the drive to the first of one or more intermediate rotational speeds. Continued inactivity will result in further speed reduction until the drive is ultimately powered off. The drive increases rotational speed on demand.

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F. Douglis et al, "Thwarting the Power-Hungry Disk" 1994 Winter USENIX--Jan., 17-21, 1994 San Francisco, CA. pp. 293-306.
Patent Abstract of Japan, vol. 15 No. 220 May 6, 1991, Harayuki Hard Disk Controller.

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