Apparatus and storage system for controlling acquisition of snapshot
US7461293B2 · kind B2 · utility
6Cited by
17References
20Claims
0Family size
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Key dates
| Filing date | Dec 17, 2007 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Dec 17, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A DBMS performs a checkpoint process for maintaining consistency of data. A snapshot acquisition control program detects the checkpoint process externally to the DBMS and creates a snapshot in an external storage according to the timing of the checkpoint. Correspondence between checkpoints and snapshots is maintained in a CP-SH correspondence management table to make it possible to restore in a short time data at the time of an arbitrary checkpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.