Storage device and control method for the same
First Claim
1. A control method for a storage device having a first volume for storing discontinuous data transmitted from a host computer and a second volume for storing continuous data produced by address-converting the discontinuous data, the method comprising:
- a first step of converting the discontinuous data transmitted from the host computer into continuous data and storing the continuous data in one of a plurality of third volumes formed by dividing up the second volume;
a second step of managing, from among the continuous data stored in the third volumes in the first step, transfer target data that has to be transferred from a third volume to the first volume; and
a third step of transferring transfer target data stored in the third volume having the smallest amount of the transfer target data managed by the data management unit to the first volume, thereby clearing the third volume.
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Accused Products
Abstract
A storage device according to the present invention has a first volume for storing discontinuous data transmitted from a host computer and a second volume for storing continuous data produced by address-converting discontinuous data, and includes: a data storing unit for converting the discontinuous data transmitted from the host computer into the continuous data and storing the continuous data in one of a plurality of third volumes formed by dividing up the second volume; a data management unit for managing transfer target data that has to be transferred from the third to the first volume, from among the discontinuous data stored in the third volume by the data storing unit; and a volume clearance unit for clearing the third volume having the smallest amount of transfer target data managed by the data management unit by transferring the transfer target data in the relevant third volume to the first volume.
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Citations
12 Claims
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1. A control method for a storage device having a first volume for storing discontinuous data transmitted from a host computer and a second volume for storing continuous data produced by address-converting the discontinuous data, the method comprising:
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a first step of converting the discontinuous data transmitted from the host computer into continuous data and storing the continuous data in one of a plurality of third volumes formed by dividing up the second volume; a second step of managing, from among the continuous data stored in the third volumes in the first step, transfer target data that has to be transferred from a third volume to the first volume; and a third step of transferring transfer target data stored in the third volume having the smallest amount of the transfer target data managed by the data management unit to the first volume, thereby clearing the third volume. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A storage device having a first volume for storing discontinuous data transmitted from a host computer and a second volume for storing continuous data produced by address-converting the discontinuous data, the storage device comprising:
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a data storage unit for converting the discontinuous data transmitted from the host computer into the continuous data and storing the continuous data in one of a plurality of third volumes formed by dividing up the second volume; a data management unit for managing, from among the continuous data stored in the third volumes by the data storing unit, transfer target data that has to be transferred from one of the third volumes to the first volume; and a volume clearance unit for transferring transfer target data stored in the third volume having the smallest amount of transfer target data managed by the data management unit to the first volume, thereby clearing the third volume. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification