Metadata optimization for network replication using differential encoding
US9110964B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2013 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/83
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, in response to a list of fingerprints representing data chunks of a first batch for replication, a second batch previously transmitted to the target storage system is identified based on at least a portion of the fingerprints of the first batch. Differential encoding information is generated representing a difference between fingerprints of the first batch and the second batch. The differential encoding information is transmitted to the target storage system, without transmitting all full fingerprints of the first batch, to allow the target storage system to determine which of the data chunks are missing at the target storage system. In response to information received from the target storage system indicating one or more data chunks that are missing at the target storage system, the missing data chunks are then transmitted to the target storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.