Producing tertiary instant virtual copies without volume...

Details Producing tertiary instant virtual copies without volume... Producing tertiary instant virtual copies without volume...

2006-03-21

2009-08-04

Thomas, Shane M (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C707S793000

Reexamination Certificate

active

07571292

ABSTRACT:
Provided are a techniques for copying data. It is determined that it is time to execute a quick copy command indicating one or more control volume pairs for which a freeze indicator is set to indicate that a freeze is to occur and one or more data volume pairs for which a freeze indicator is set to indicate that a freeze is not to occur. A consistent instant virtual copy operation is performed for each of the one or more control volume pairs for which the freeze indicator is set to indicate that the freeze is to occur. An instant virtual copy operation is performed for each of the one or more data volume pairs for which the freeze indicator is set to indicate that the freeze is not to occur.

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