Point-in-time copy with chain cloning
US9632724B1 · kind B1 · utility
2Cited by
24References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Oct 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for storage copy with chain cloning are provided, including providing a volume with one or more snapshots in the form of a dependency chain, where the volume and one or more snapshots are volume nodes in the dependency chain and providing associated metadata required to maintain the one or more snapshots; cloning the dependency chain to create at least one a sparse copy chain including sparse copies of the volume and the one or more snapshots resulting in sparse volume nodes, resulting in a lattice structure of the dependency chain of volume nodes and one or more sparse copy chains of cloned volume nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.