Using logical block addresses with generation numbers as data fingerprints for network deduplication
US8799367B1 · kind B1 · utility
16Cited by
52References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The technique introduced here involves using a block address and a corresponding generation number as a “fingerprint” to uniquely identify a sequence of data within a given storage domain. Each block address has an associated generation number which indicates the number of times that data at that block address has been modified. This technique can be employed, for example, to determine whether a given storage server already has the data, and to avoid sending the data to that storage server over a network if it already has the data. It can also be employed to maintain cache coherency among multiple storage nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.