Managing data in a multi-level raid storage array
US6898667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Dec 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and methods implemented within a multi-level RAID (redundant array of independent disks) storage array operate to initially write data to a lower performing RAID level within the array. In addition, data is migrated between lower and higher performing RAID levels via data migration processes that function as background processes. Benefits of the disclosed system and methods include a non-disruptive environment for servicing host I/O (input/output) requests. Array response times are significantly reduced by not allowing initial data writes to interfere with higher performing RAID levels and by migrating data between lower and higher performing RAID levels in the background when the array is less busy servicing host I/O requests.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.