Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-02-28
2006-02-28
Elmore, Stephen C. (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S114000, C711S154000, C711S163000, C711S112000, C711S111000, C711S006000, C711S004000, C714S006130
Reexamination Certificate
active
07007147
ABSTRACT:
A storage subsystem that has detected the necessity of the data relocation determines whether the data relocation is possible or not from one storage unit to another within the particular storage subsystem. A virtualization device is notified in the case where the data relocation in the particular subsystem is impossible. The manager of the virtualization device gives an inquiry to the storage subsystems as to whether any one of them can become a relocation destination or not. A storage subsystem determines, based on the related information, whether the data relocation requested is possible or not within the particular storage subsystem. In the case where such a relocation is possible, the copying process is carried out for data relocation from one storage subsystem to another in compliance with an instruction from the virtualization device.
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Arai Kouji
Arakawa Hiroshi
Eguchi Yoshiaki
Iwamura Takashige
Yamamoto Yasutomo
Elmore Stephen C.
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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