Multi-layered storage administration for flexible placement of data
US9733867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jun 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0671
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage administrator may maintain location information in separate layers. A data storage system may identify the location of particular data by identifying the virtual location of data, such as the logical extent to which the data belongs. Object stores may maintain mappings of virtual locations to physical locations, such as mappings of extent identifiers to virtual storage objects and mappings of virtual storage objects to storage unit locations. When particular data is relocated to a new location, a storage administrator may update mappings used to translate virtual locations to physical locations, such as an extent-object mapping or an object-storage unit mapping. References to the virtual locations, such as references to logical extent identifiers, may not be updated in response to the relocation of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.