Using Idle Mode Prediction to Improve Storage System Performance
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsDonald Joseph Molaro, Jorge Campello de Souza, Richard M.H. New, Damien C.D. Le Moal
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Abstract
Techniques for optimizing hard disk drive performance. According to one embodiment, a storage system includes a storage unit that stores data and a controller. The controller receives an idle mode indication and performs at least one operation based on the idle mode indication. According to another embodiment, a host system includes a processor and a scheduler that is operative to issues commands. The processor computes the idle mode indication, and the processor sends the idle mode indication to the storage system.
Claims21
A storage system comprising:
- a storage unit that stores data;
- and
- a controller coupled to the storage unit, wherein the controller receives an idle mode indication, and wherein the controller performs at least one operation based on the idle mode indication.
A computer system that comprises code for optimizing hard disk drive performance, wherein the code is stored on a computer readable medium, the computer system comprising:
- code for receiving an idle mode indication that is determined based on a prediction of when future commands will be sent to a hard disk drive;
- and
- code for performing at least one operation based on the idle mode indication.
A host system for optimizing performance of a storage system, the host system comprising:
- a processor;
- and
- a scheduler that is operative to issues commands, wherein the processor computes an idle time, and the processor sends the idle time to the storage system.
Dependencies are inferred from the claim text.