INFORMATION STORAGE SYSTEM FOR REDISTRIBUTING INFORMATION TO INFORMATION STORAGE DEVICES WHEN A STRUCTURE OF THE INFORMATION STORAGE DEVICES IS CHANGED
First Claim
1. An information storage system for storing information, comprising:
- a plurality of information storage devices;
a division processing unit dividing the information to be stored in the information storage devices and distributing the divided information to said information storage devices; and
a division control unit controlling said division processing unit so as to divide the information in accordance with a number of said information storage devices, wherein, when the number of said information storage devices is changed, said division control unit controls said division processing unit so that the information stored in said information storage devices is divided by a dividing method suitable for the number of said information storage devices after being changed.
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Accused Products
Abstract
An information storage device stores data evenly in each of a plurality of external information-storage devices even if the number of external information-storage devices provided in the information storage system is changed. A division processing unit divides the information to be stored in the information storage devices and distributes the divided information to the information storage devices. A division control unit controls the division processing unit so as to divide the information in accordance with a number of the information storage devices. When the number of the information storage devices is changed, the division control unit controls the division processing unit so that the information stored in the information storage devices is divided by a dividing method suitable for the number of the information storage devices after being changed.
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Citations
18 Claims
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1. An information storage system for storing information, comprising:
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a plurality of information storage devices;
a division processing unit dividing the information to be stored in the information storage devices and distributing the divided information to said information storage devices; and
a division control unit controlling said division processing unit so as to divide the information in accordance with a number of said information storage devices, wherein, when the number of said information storage devices is changed, said division control unit controls said division processing unit so that the information stored in said information storage devices is divided by a dividing method suitable for the number of said information storage devices after being changed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A processor readable medium storing program code for causing a computer to store information in a plurality of information storage devices, comprising:
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first program code means for dividing the information to be stored in the information storage devices and distributing the divided information to said information storage devices; and
second program code means for controlling a dividing operation according to said first program code means so as to divide the information in accordance with a number of said information storage devices so that, when the number of said information storage devices is changed, the information stored in said information storage devices is divided by a dividing method suitable for the number of said information storage devices after being changed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification