Source cleaning cascaded volumes using write and background copy indicators
US9047233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2012 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Nov 15, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1456
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various systems, processes, and products may be used to source clean cascaded volumes. In particular implementations, a system, process, and product for source cleaning cascaded volumes may include the ability to store a primary volume and a plurality of cascaded backup volumes. The system, process, and product may also include the ability to determine whether a write to one of the backup volumes is due to a background copy being made of another volume in the cascade and adjust a background copy indicator in a volume map for the backup volume if the write is due to a background copy and to determine whether a write to one of the backup volumes is due to a write to another volume in the cascade and adjust a write copy indicator in a volume map for the backup volume if the write is due to a write to another cascaded volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.