Physical incremental backup using snapshots
US6665815B1 · kind B1 · utility
369Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jan 21, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A backup apparatus and method suitable for protecting the data volume in a computer system function by acquiring a base state snapshot and a sequential series of data volume snapshots, the apparatus concurrently generating succedent and precedent lists of snapshot differences which are used to create succedent and precedent backups respectively. The data volume is restored by overwriting the base state data with data blocks identified in one or more succedent backups. File recovery is accomplished by overwriting data from a current snapshot with one or more precedent backups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.