Storage system and data recovery method
US8060468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2008 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Dec 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Proposed are a storage system and a data recovery method capable of guaranteeing data recovery processing at a service level sought by a user. This storage system and data recovery method uses one or more data recovery candidate points and specifies a section containing the journal and the replication of write data, checks a redundancy relation of a write range in the volume of write data written from host into the volume contained in the journal regarding one or more the journals in the section, and executes redundancy elimination processing of merging a plurality of the replications of write data or a plurality of the journals into a single replication of write data or a single journal based on the check result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.