Priority management of a disk array
US6839817B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Feb 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a first form, a method for managing requests in a disk array having a number of disks includes associating priorities with respective requests. A new request is processed, which includes determining a maximum priority for at least certain ones of requests received and comparing the priority of the new request to the maximum priority. Responsive to the comparison, a selection is made between i) categorizing the new request as a foreground disk operation and ii) categorizing the new request as a background disk operation. A selection is also made between i) working the new request on at least one of the disks and ii) placing the new request in a queue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.