Automated data relocation among storage tiers based on storage load
US8429346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Nov 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are disclosed for relocating data in a physical storage pool comprising a plurality of storage tiers having differing performance characteristics, the physical storage pool being mapped into one or more logical units, each logical unit comprising a plurality of logical slices of data storage. The methods and systems can involve receiving a relocation list, the relocation list including, for each of a plurality of logical slices, a slice identifier, a temperature value, and a current physical location, determining a destination tier for each logical slice on the relocation list, evaluating for each logical slice on the relocation list a performance gain expected to be achieved by moving the logical slice from its current physical location to a new location in the destination tier, and relocating data in a logical slice from its current physical location to the new location based on the evaluation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.