System and method for providing thin-provisioned block storage with multiple data protection classes
US10613933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2014 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/805
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In some examples, a multi-node system may access physical storage divided into extents and further arranged into extent groups that may be allocated on demand as thin provisioned storage in response to write requests. Protection class instances are set with specified data protection capabilities. Each instance acts as a logical unit having a distinct addressable block storage space from the extent groups allocated thereto. The extents in an extent group to be allocated to a given protection class instance may vary depending on the protection class capabilities. Management information for the extents, extent groups, and protection classes may be stored in mirrored devices separate from the write data stored in the extents for providing redundant protection to the management information and for increasing the availability of write data in the event of a failure that may cause data loss at one or more locations in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.