Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-06-16
2009-10-27
Kim, Matt (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S113000
Reexamination Certificate
active
07610460
ABSTRACT:
A method of managing data by a storage system having first and second volumes according to a command from a server computer, including receiving a data access command from the server computer; specifying a data area that is designated in the data access command and reading data in the data area from the first volume; judging whether the data access command contains a data evacuating instruction; judging whether the data in the data area has been evacuated to the second volume when the data read command contains the data evacuating instruction; evacuating the data in the data area to the second volume when the data in the data area has not been evacuated to the second volume; and sending the data in the data area to the server computer. The invention reduces loads on the storage system when a differential snapshot is used.
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“Run-Time Load Balancing System on San-Connected PC Cluster for Dynamic Injection of CPU and Disk Resource” by K. Goda, et al. pp. 182-193 of Proceedings of 13thInternational Conference on Database and Expert Systems Applications (DEXA 2002), Sep. 2002.
Fujiwara Shinji
Suzuki Yoshio
Watanabe Satoru
Brundidge & Stanger, P.C.
Hitachi , Ltd.
Kim Matt
Schnee Hal
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