Point-in-time copy restore
US9747171B2 · kind B2 · utility
36Cited by
15References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Managing storage volumes in a point-in-time copy cascade. The cascade includes a first source volume, a first target volume and a second target volume. The method detects a corruption of the first source volume and, if a first restoration of the first source volume from the first target volume is in progress, creates a third target volume from the second target volume and directs I/O operations for the first source volume to the third target volume. The first restoration is stopped. The first source volume is restored from the third target volume, and the third target volume is deleted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.