Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-03-06
2007-03-06
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C714S015000
Reexamination Certificate
active
10674845
ABSTRACT:
Provided are a method, system, and program for forming a consistency group of data. A command is received to form a consistency group with respect to data received at a first storage site that is mirrored to a second storage site. A first data structure is provided indicating updates to the first storage site not included in the consistency group that are received after the command and a second data structure is provided indicating updates to the first storage site in the consistency group to be formed. A command is transmitted to cause data copied to the second storage site that is part of the consistency group to be copied to a third storage site. Indication is received when the data in the second storage site that is part of the consistency group is copied to the third storage site.
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Bartfai Robert Francis
Jarvis Thomas Charles
Micka William Frank
Spear Gail Andrea
Stanley Warren K.
Kim Matthew
Konrad Raynes & Victor LLP
Thomas Shane M.
Victor David W.
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