Self archiving log structured volume with intrinsic data protection
US6732125B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2000 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Dec 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data backup system for use with a server running a storage application that writes and reads data blocks. The system includes a self archiving log structured volume for copying blocks from an active volume while the application is running without contending with the application for access to data blocks. The volume records the result of every write event in a new location in primary storage, forming a chronological log of the state changes the volume undergoes. The volume records in the log the points in time (synch events) when the blocks of the volume are in a consistent state with respect to the application. The system further includes backing storage to store the archived blocks and synch events of the volume. The volume migrates inactive segments of its log to the backing storage and ensures that a volume can be reconstructed from a fixed number of log segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.