Distributed storage system, data management method, and data management program
US11151045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jan 17, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/313
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a distributed storage system which can reduce a load on a network between storage apparatuses when an access request is received and improve responsiveness. In the distributed storage system, the storage device includes a data area and a cache area; a node becomes an owner node when receiving a transfer of charge of an LU from another node in a non-storage state where LU data is not stored in a data area; the processor of the owner node receives a read request for an LU that is in charge, obtains data of a target area based on data of the storage device of another node when the data of the target area is not stored in the data area or the cache area of the owner node, and transmits the data to a request source and stores it in a cache area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.