Resynchronization of replicated data
US9449014B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Nov 29, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/178
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Mechanisms are provided for efficient resynchronization of replicated data. A hash value is generated for a chunk of data replicated from a source node to a target node. The chunk of data may be a file deduplicated and compressed at both a source node and a target node. A current sequence number is determined and a sequence number and hash tuple is maintained for the chunk of data at both the source node and the target node. Sequence numbers are modified whenever the data is modified. Current sequence numbers and sequence number and hash values in the sequence number hash tuples at the source node and the target node may be compared to determine whether data is still synchronized at a later point in time or whether data requires resynchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.