Method for reconfiguration of RAID data storage systems
US6347359B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1096
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for reconfiguration of a disk drive array is provided. For the method of the present invention, an array controller in a disk drive array examines the original configuration of the disk drive array (the source configuration) and the desired configuration (the destination configuration). Based on this examination, the array controller determines if the reconfiguration process may be optimized. To optimize the reconfiguration process, the array controller determines if a combination of changes to system parameters and possible rebuilding operations can replace the migration process. If this is possible, the reconfiguration process is modified to eliminate data migration. Otherwise, data migration is performed. In this way, the present invention provides a method that dramatically increases the speed of reconfiguration for some source and destination configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.