Management of file extent mapping to hasten mirror breaking in file level mirrored backups
US6934725B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jul 24, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An enterprise storage system for performing a file level backup operation on data using a mirror disk and a primary disk includes a split mechanism to split the mirror disk from the primary disk before backing data files up from said mirror disk to said sequential storage media and an extent mapping mechanism to perform extent mapping on files to be backed up in a given backup session before the split mechanism splits the mirror for the same given backup session, and an extent map check and update mechanism to check, after the split mechanism splits the mirror for the same given backup session, whether any files have been updated in a manner so as to require additional or revised extent map information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.