Selection of migration methods including partial read restore in distributed storage management
US8055724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Sep 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/185
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hierarchical storage system is constructed from file servers and a policy engine server by building upon a file migration service. Offline attributes are added to file system inodes in a primary file server, file system parameters are added in the primary server, an offline read access method field is added to a connection database, and the primary file server is programmed to use these attributes and parameters for selecting a particular method (such as a partial read migration or a pass through read method) for read access to an offline file. In this fashion, the primary file server is provided with flexibility for selecting a particular one of a number of migration methods depending on various conditions, in order to improve the trade-off between the cost of storage and delay in file access.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.