System and method for replicating disk images in a cloud computing based virtual machine file system
US8352482B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Jul 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45595
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A replicated decentralized storage system comprises a plurality of servers that locally store disk images for locally running virtual machines as well as disk images, for failover purposes, for remotely running virtual machines. To ensure that disk images stored for failover purposes are properly replicated upon an update of the disk image on the server running the virtual machine, a hash of a unique value known only to the server running the virtual machine is used to verify the origin of update operations that have been transmitted by the server to the other servers storing replications of the disk image for failover purposes. If verified, the update operations are added to such failover disk images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.