Creating copies of space-reduced files in a file server having a redundant data elimination store
US9152628B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2008 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1744
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A file server having a redundant data elimination store responds to requests from clients for copies of space-reduced files. For reduced storage requirements and reduced processing time, a baseline version of unshared data blocks is created in the file server, and then the baseline version is space reduced by conversion to a stub version of shared data blocks, and then the file server responds to a request from a client for creation of one or more space-reduced copies by cloning the stub version. The file server may also respond to a request for creation of a modified space-reduced copy having specified data written at a specified offset. For example, the file server creates a respective modified copy of a virtual server image file for use by each client of the file server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.