Online replacement of physical storage in a virtual storage system
US9250823B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2014 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2094
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Physical storage is replaced online in a data integrity storage system comprising RAID groups of physical disks in separate enclosures (shelves). All disks of a RAID group are located on a corresponding shelf, and each shelf is mapped by an internal file system to a separate independent logical address space partitioned into a plurality of blocks forming a blockset containing data and metadata. Source shelf disk data is moved online to disks of a target shelf using invulnerable data movement that ensures the integrity of the data, and source shelf blockset metadata is migrated to a corresponding target shelf blockset. After verifying the correctness of the target data and metadata, the source shelf and blockset are removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.