Storage system with prioritized RAID rebuild
US11036602B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jan 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system is configured to establish a redundant array of independent disks (RAID) arrangement comprising a plurality of stripes each having multiple portions distributed across multiple storage devices. The storage system is also configured to detect a failure of at least one of the storage devices, and responsive to the detected failure, to determine for each of two or more remaining ones of the storage devices a number of stripe portions, stored on that storage device, that are part of stripes impacted by the detected failure. The storage system is further configured to prioritize a particular one of the remaining storage devices for rebuilding of its stripe portions that are part of the impacted stripes, based at least in part on the determined numbers of stripe portions. The storage system illustratively balances the rebuilding of the stripe portions of the impacted stripes across the remaining storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.