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US 7,873,851 B1Granted
Powering disk drive spinup
AssigneeEMC Corporation
InventorsThomas E. Linnell, Phillip J. Roux
Life of this patent
Estimating the term…
Abstract
A method is used in powering disk drive spinup. A disk drive is powered with a primary power source and is temporarily powered with a secondary power source in addition to the primary power source. The secondary power source powers the disk drive when the disk drive is spinning up.
Claims17
A method for use in powering disk drive spinup, comprising:
- powering a disk drive with a primary power source;
- applying a policy to select between first and second desired spinning states for the disk drive, wherein the first desired spinning state comprises spinning up and the second desired spinning state comprises spinning down;
- and
- based on a result of applying the policy, temporarily powering the disk drive with a secondary power source in addition to the primary power source, the secondary power source powering the disk drive when the disk drive is spinning up.
1 more element
A system for use in powering disk drive spinup, comprising:
- a primary power source powering a disk drive;
- a secondary power source configured to temporarily power the disk drive in addition to the primary power source powering the disk drive;
- a first mechanism configured to apply a policy to select between first and second desired spinning states for the disk drive, wherein the first desired spinning state comprises spinning up, and the second desired spinning state comprises spinning down;
- and
- a second mechanism configured, based on a result of applying the policy, to enable the secondary power source to power the disk drive when the disk drive is spinning up.
2 more elements
Dependencies are inferred from the claim text.