Method of writing data
US9047306B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2005 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/835
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An embodiment of a method of writing data begins with a first step of generating a timestamp. A second step issues a query that includes the timestamp to each of a plurality of primary storage devices. The method continues with a third step of receiving a query reply from at least a quorum of the primary storage devices. The query replies indicate that the timestamp is later than an existing timestamp for the data. In a fourth step, the data is mirrored to secondary storage after receiving the query reply from at least the quorum of the primary storage devices. Upon receiving a mirror completion message from the secondary storage, a fifth step issues a write message that includes at least a portion of the data and the timestamp to each of the primary storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.