Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-10-09
2007-10-09
Shah, Sanjiv (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S001000, C711S004000, C711S100000, C711S111000, C711S112000, C711S114000, C711S162000, C714S005110, C714S006130
Reexamination Certificate
active
11190887
ABSTRACT:
In a cluster-structured disk subsystem, when creating a volume for an online backup separately from a volume for a normal I/O, it is desirable to be able to achieve such a creation for any volume under subsystem. Further, with an increase in the capacity of the subsystem, it becomes more difficult for a user to determine where to place a volume to which data is to be copied. Thus, a cluster-structured storage system is provided in which it is possible to reference/renew snapshot control information in shared memory of other clusters and achieve a snapshot between clusters via an inter-cluster connecting mechanism. In this system, control is performed inside/outside the cluster, and a control is performed inside/outside the cluster, and a volume to which data is to be copied is suggested to the user.
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Arai Kouji
Oeda Takashi
Satoyama Ai
Yamamoto Yasutomo
Hitachi , Ltd.
Li Zhuo H.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Shah Sanjiv
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