Daisy-chained device-mirroring architecture
US7165141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Apr 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2074
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of operating a daisy-chained device-mirroring architecture (where such an architecture may include a storage node N configured to mirror data on an entity representing node N−1, a storage node N+1 daisy-chain-coupled via a first main link to, and configured to mirror data on, the node N, and a storage node N+2 daisy-chain-coupled via a second main link to, and configured to mirror data on, the node N+1, each of the nodes N and N+1 being operable under normal circumstances to forward writes received thereby to the nodes N+1 and N+2 via the first and second main links, respectively), where such a method may include: tracking, at the node N, acknowledgments by the node N+1 and by the node N+2 of writes that the node N has forwarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.