US 12,656,967 B2Granted

Methods for reducing time to resume data operations in spun down hard drives

AssigneeSeagate Technology LLC

InventorsRiyan Alex Mendonsa, Jon D. Trantham, Joshua Ward Christensen, Jack Vincent Anderson, Jr., Kenneth A. Haapala

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Abstract

Disclosed are systems and methods for reducing the amount of time required before resuming full data operations after a hard disk drive has been spun down and/or placed in a standby mode. Such systems and methods may make use of thresholds to changes in environmental parameters, such as temperature, that may affect hard disk drive calibrations. Environmental parameter changes below a threshold may allow a subset of calibrations to be skipped or otherwise reduced to resume data operations. In addition or alternatively, a hard disk drive may be placed in a read-only mode prior to performing all calibrations needed to resume full write operations.

Claims13

Dependent claims

A method for use with a hard disk drive that utilizes calibrations during data operations of the hard disk drive, the method comprising:

while the hard disk drive is in a standby mode, monitoring one or more environmental parameters of the hard disk drive that may affect the calibrations;
responsive to receiving a spin up command for the hard disk drive, comparing the one or more environmental parameters to similar parameter information obtained when the calibrations were last updated;
based on the comparing, determining a subset of the calibrations needed for resuming data operations of the hard disk drive;
and
resuming data operations of the hard disk drive using only calibration calculations within the subset of the calibrations.

2 more elements

Dependencies are inferred from the claim text.