Method and apparatus for determining using least recently...

Data processing: database and file management or data structures – Database design – Data structure types

Reexamination Certificate

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C707S793000, C707S793000

Reexamination Certificate

active

10630603

ABSTRACT:
A method to copy information to two data storage devices. The method provides a first data storage device and a second data storage device, where the first data storage device is capable of communicating with the second data storage device. The method provides first information and a write command to the first data storage device at a first time. The method determines if the write command comprises a synchronous copy attribute. If the write command comprises a synchronous copy attribute, then the method synchronously provides the first information to the second data storage device. Alternatively, if the write command does not comprise a synchronous copy attribute, then the method provides the first information to the second data storage device at a second time, where that second time is later than the first time.

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