Backup data management on a fractionally reserved storage system
US8032725B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2007 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Mar 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide a mechanism by which a server system executing a host application monitors utilization of overwrite reserve space on a volume storing application data. The server system executes space reservation policies to ensure that the volume cannot run out of space due to snapshot creation. In one implementation, the server system initiates deletion of backup datasets stored on the volume if certain criteria provided by a system administrator are met. If deleting backup datasets cannot not stop the volume from running out of space due to continuous snapshot creation, the server system prevents the host application from temporarily issuing I/O requests to the storage system until space is recovered. Preventing the host application from issuing I/O requests, rather than failing I/O requests by the storage system, eliminates undesirable consequences, such as loss of data and the need to perform data recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.