System and article of manufacture for consistent copying of storage volumes
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United States of America Patent
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Mar 8, 2011
Grant Date -
Jun 4, 2009
app pub date -
Nov 19, 2008
filing date -
Jun 18, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Provided are a system and article of manufacture for copying storage. Copy operations are performed on source storage units to copy to target storage units, wherein the copy operations create a consistent copy of the source storage units in the target storage units. While performing a copy operation to copy from one source storage unit to one target storage unit, a write operation is restricted from being performed on the one source storage unit, until the copy operations have been performed on the source storage units.
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