Systems, methods and devices for performing efficient patrol read operations in a storage system
US10001947B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2016 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | May 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0409
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An example computer-implemented method for performing efficient patrol read operations in a storage system including a plurality of disks organized in a RAID array can include determining an I/O load on the storage system, identifying at least one portion of an available storage capacity containing valid data and reading the portion of the available storage capacity containing the valid data. Optionally, the portion of the available storage capacity containing the valid data is the only portion read during the patrol read operations. The method can also include determining whether a medium error exists in the portion of the available storage capacity containing the valid data. If a medium error exists, the method can include fixing the medium error. Additionally, the above operations can optionally be performed only when the I/O load on the storage system is less than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.