Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2005-12-27
2005-12-27
Peikari, B. James (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S156000, C711S111000, C711S112000
Reexamination Certificate
active
06981117
ABSTRACT:
Provided are a method, system, and program for transferring data from a source storage unit, wherein storage units are configured within a storage system. A data transfer operation is processed to transfer data from source storage blocks in a source storage unit to corresponding target storage blocks in a target storage unit. For each source storage block, before transferring data from one source storage block to the corresponding target storage block, indication is made that the source storage block is in a locked state. Data in the source storage block in the locked state is not accessible to a host data request, and wherein data in storage blocks that are not in the locked state is accessible to a host data request while the data transfer operation is pending. Indication is further made that the source storage block is not in the locked state after transferring the data in the source storage block to the corresponding target storage block the data in the source storage block to the corresponding target storage block.
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Cheng Tu-An
Patel Vishal
Choi Woo H.
International Business Machines - Corporation
Konrad Raynes & Victor LLP
Peikari B. James
Victor David W.
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