Fast verification of computer backup data
US7421551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1448
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A backup method for a computer system that affords fast verification of source data written to backup media includes reading a portion of the source data from a source storage volume and generating a hash of the source data. The source data is written to the backup media as backup data, and the hash generated from the source data is written to the backup media and associated with the backup data corresponding to the source data from which the hash was generated. Verification of the backup data can be subsequently performed by reading the backup data from the backup media, generating a hash from the backup data read, and comparing that hash with the hash originally stored on the backup media. This enables the backup data to be verified as corresponding to the original source data without the necessity of rereading the source data from the source volume, and enables faster, more accurate off line verification subsequent to the backup process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.