Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2007-08-07
2007-08-07
Peugh, Brian R. (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S169000, C707S793000
Reexamination Certificate
active
10868266
ABSTRACT:
A remote replication solution for a storage system receives a stream of data including independent streams of dependent writes. The method is able to discern dependent from independent writes. The method discerns dependent from independent writes by assigning a sequence number to each write, the sequence number indicating a time interval in which the write began. It then assigns a horizon number to each write request, the horizon number indicating a time interval in which the first write that started at a particular sequence number ends. A write is caused to be stored on a storage device, and its horizon number is assigned as a replication number. Further writes are caused to be stored on the storage device if the sequence number associated with the writes is less than the replication number.
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BainwoodHuang
Peugh Brian R.
Rutz Jared
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