Distributed storage medium management for heterogeneous storage media in high availability clusters
US9063939B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Dec 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/5083
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A high availability cluster and method of storage medium management in such high availability cluster. A number k of nodes belonging to the cluster, where k≧2 and includes a master node, are provisioned with high-access-rate and low-access-rate storage media. A file is written to the high-access-rate medium of a serving node selected from among k−1 nodes excluding the master node. The file is also written to low-access-rate medium of each of k−2 nodes excluding the master node and the serving node. A distributed storage medium management protocol supervises file migration from the low-access-rate medium of a back-up node to the high-access-rate medium of the back-up node upon disruption of file availability on the serving node. File rebalancing relies on parameters including popularity, write- and read-requests, capacity, processing load or cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.