Storage control apparatus, data management system and data management method
AssigneeHitachi, Ltd.
InventorsAkira FUJIBAYASHI, Kazuhisa Fujimoto, Shuji Nakamura
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Abstract
A storage control apparatus according to the present invention includes a plurality of connecting units connected to one or more host computers and one or more hard disk drives as storage media for storing data, one or more non-volatile storage media which are of a different type from the hard disk drives and which store data WRITE requested from the host computer, a plurality of processing units for processing WRITE and READ requests from the host computer by using the hard disk drives or the non-volatile storage media and, a plurality of memory units for storing control information to be by the processing units.
Claims15
A storage system comprising:
- a plurality of disk devices storing data received from a host computer;
- a plurality of MAID controlled disk devices storing data received from the host computer;
- a plurality of non-volatile memory devices storing data received from the host computer;
- and
- a processing unit controlling read/write requests received from the host computer to a plurality of logical volumes configured by at least one of the plurality of disk devices, the plurality of MAID controlled disk devices and the plurality of non-volatile memory devices, managing relation between storage hierarchy devices including the plurality of disk devices, the plurality of MAID controlled disk devices and the plurality of non-volatile memory devices and attribution information of each of the plurality of disk devices, the plurality of MAID controlled disk devices and the plurality of non-volatile memory devices,
- wherein the processing unit determines a first storage layer of the storage hierarchy devices as a source storage layer and a second storage layer of the storage hierarchy devices as a destination storage layer, based on a user policy of I/O performance and power consumption, and migrates data stored in at least one of logical volumes of the first storage layer to at least one of logical volumes of the second storage layer based on the user policy.
Dependencies are inferred from the claim text.