Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-06-07
2011-06-07
Verbrugge, Kevin (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S112000, C711S170000, C711SE12001
Reexamination Certificate
active
07958328
ABSTRACT:
Provided is a storage system capable of saving actually used physical storage areas and of achieving a high speed in write processing. There is disclosed a computer system including a server and a storage system, in which physical storage areas of a disk drive are managed for each one or more physical blocks of predetermined sizes, and allocation of one or more physical blocks to a plurality of logical blocks of predetermined sizes is managed, and the storage system stores data written in a first logical block in a first physical block allocated to the first logical block and allocates the first physical block to a second logical block where the same data as the data stored in the first physical block is to be written.
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Japanese Office Action in JP 2006-240169, dated Feb. 17, 2009 (in Japanese) and partial English language translation of same.
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Verbrugge Kevin
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