Synchronizing RAID configuration changes across storage processors
US10146646B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Aug 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/85
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for maintaining RAID (redundant array of independent disks) configuration metadata across multiple SPs (storage processors) includes receiving a change request by a controller within a first SP, writing, by the first SP, a RAID configuration change described by the change request to a persistent intent log, and informing a second SP that the intent log has been written. The second SP, upon being informed of the write to the intent log, reads the RAID configuration change from the intent log and writes the RAID configuration change to a persistent configuration database. In this manner, the first SP and the second SP both receive the RAID configuration change and thus are both equipped to service reads and writes directed to a affected RAID storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.