Patent · US Active

Data storage with snapshot-to-snapshot recovery

US7979735B2 · kind B2 · utility

5Cited by

21References

15Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Haim Helman · Ramat Gan, IL
Shemer Schwarz · Nes Ziona, IL
Omri Palmon · Nes Ziona, IL
Kariel Sandler · Nes Ziona, IL

Key dates

Filing date	Aug 15, 2008
Grant date	Jul 12, 2011
Priority date	—
Expiry date	Jul 30, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/84
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for data storage includes creating first and second copies of a logical volume, such that the first and second copies are represented by respective first and second sets of pointers to physical storage locations in which data used by the copies is stored. Responsively to a corruption of at least part of the data that is used by the first copy, the first copy is restored from the second copy by replacing the first set with the pointers in the second set.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.