Two-tier backup mechanism
US7197520B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Aug 3, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
System and method for performing two-tier backups in file systems without requiring Hierarchical Storage Management (HSM). A two-tier backup mechanism may perform first-tier backups of dynamic and candidate static data, and second-tier backups of candidate static data. Data is examined by the two-tier backup mechanism and, if the data qualifies as candidate static data, metadata is created for the data. Candidate static data and its metadata are copied to first-tier backups along with dynamic data, and are also copied to second-tier backups a specified number of times, after which the static data is reclassified as “static copied data”. Only metadata for static copied data is written to the first-tier backups. Embodiments may be implemented in file systems that do not support HSM and in file systems that support HSM, whether HSM is operational or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.