Persistent restore of virtual devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 23, 2008
Grant Date -
May 26, 2005
app pub date -
Nov 24, 2003
filing date -
Nov 24, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Restoring data includes providing data in a first storage area of a first type that contains sections of data, providing data in a second storage area of a second type wherein the second type has, for each section of data thereof, either a pointer to a corresponding section of data of the first storage area or a pointer to corresponding section of data of a third storage area of the first type, providing data in at least one other storage area of the second type, and, for each particular section of data of the second storage area having a pointer to the third storage area, providing to a corresponding section of the first storage area an indirect pointer to a corresponding section of the third storage area if no storage areas of the at least one other storage area point to the corresponding section of the first storage area.
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