Method of, and apparatus for, power management in a storage resource
AssigneeXyratex Technology Limited
InventorRobert P. ROSSI
Life of this patent
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Abstract
There is provided a method and apparatus for power management in a storage resource. The storage resource comprises at least one RAID array including a plurality of physical drives. The method comprises: determining a reduced number of physical drives within a RAID array upon which data is to be concentrated; moving data stored on said RAID array and/or targeting data written to said RAID array to one or more of said reduced number of physical drives such that said data is concentrated on said reduced number of physical drives in said RAID array; and selectively applying power management logic to enable, based on at least one power management criterion, one or more physical drives in said RAID array to be powered down or to be supplied with reduced power.
Claims45
A method for power management in a storage resource, the storage resource comprising at least one RAID array including a plurality of physical drives, the method comprising:
- determining a reduced number of physical drives, said reduced number being less that the total number of physical drives, within a RAID array upon which data is to be concentrated;
- moving data stored on said RAID array and/or targeting data written to said RAID array to one or more of said reduced number of physical drives such that said data is concentrated on said reduced number of physical drives in said RAID array;
- and
- selectively applying power management logic to enable, based on at least one power management criterion, one or more physical drives in said RAID array to be powered down or to be supplied with reduced power.
A controller for power management in a storage resource, the storage resource comprising at least one RAID array including a plurality of physical drives, the controller being operable to:
- determine a reduced number of physical drives, said reduced number being less that the total number of physical drives, within a RAID array upon which data is to be concentrated;
- move data stored on said RAID array and/or target data written to said RAID array to one or more of said reduced number of physical drives such that said data is concentrated on said reduced number of physical drives in said RAID array;
- and
- selectively applying power management logic to enable, based on at least one power management criterion, one or more physical drives in said RAID array to be powered down or to be supplied with reduced power.
Dependencies are inferred from the claim text.