Resynchronization of a remote storage site after replication failure
US9710189B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1456
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for replicating a local storage entity to provide a remote storage entity, the method may include receiving, by a local storage site, after an occurrence of a replication failure, after-failure remote storage site difference information indicative of differences between (i) a certain point in time version of the remote storage entity and (ii) an after-failure point in time version of the remote storage entity; calculating, by the local storage site, after the occurrence of the replication failure, after-failure local storage site difference information indicative of differences between (i) a certain point in time version of the local storage entity and (ii) an after-failure point in time version of the local storage entity; and sending, by the local storage site to the remote storage site, local storage entity portions listed in at least one of the after-failure remote storage site difference information and to the after-failure local storage site difference information, during an after-failure replication cycle; and wherein the certain point in time is associated with a last successful replication cycle that preceded the replication failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.