Method and apparatus for selective volume swapping in a data storage device based on merging multiple sets of candidate storage devices
US7281106B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Feb 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an optimization dispatch process for a storage system, M storage devices are identified for an optimization analysis process to be executed to identify logical volume swaps for improving system performance. The M storage devices are identified by merging candidate storage devices obtained from separate identification algorithms employing distinct identification criteria. The analysis process is dispatched for execution based on the M storage devices until (i) a successful completion upon which a best swap has been identified, or (ii) a resource-based stop condition such as an execution time limit. M is adjusted for a subsequent iteration such that over time a desired rate of successful completions is achieved. For example, M is increased by a first amount upon a successful completion and decreased by a second amount upon the stop condition. A variety of identification algorithms can be employed, including an algorithm based on assigning swap scores to the storage devices during relatively short sample intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.