Method and apparatus for data recovery system using storage based journaling
US7398422B2 · kind B2 · utility
10Cited by
59References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | May 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system maintains a journal and a snapshot of one or more data volumes. Two journal entry types are maintained, an AFTER journal entry and a BEFORE journal entry. Two modes of data recovery are provided: “fast” recovery and “undo-able” recovery. A combination of both recovery modes allows the user to quickly recover a targeted data state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.