Systems and methods for managing single instancing data
US9015181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2009 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1458
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described in detail herein are systems and methods for managing single instancing data. Using a single instance database and other constructs (e.g. sparse files), data density on archival media (e.g. magnetic tape) is improved, and the number of files per storage operation is reduced. According to one aspect of a method for managing single instancing data, for each storage operation, a chunk folder is created on a storage device that stores single instancing data. The chunk folder contains three files: 1) a file that contains data objects that have been single instanced; 2) a file that contains data objects that have not been eligible for single instancing; and 3) a metadata file used to track the location of data objects within the other files. A second storage operation subsequent to a first storage operation contains references to data objects in the chunk folder created by the first storage operation instead of the data objects themselves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.