System, device, and method for detecting and configuring mirror relationships in a storage system
US8006053B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Aug 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2069
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Mirror relationships between system drives may be detected and/or configured automatically by writing a predetermined data pattern to a predetermined location within a system drive and then checking one or more other system drives for a mirrored copy of the same data pattern. If the data pattern is found in another SD, then it can be assumed that there is a mirror relationship between the two SDs. Failure to find the data pattern in another SD, or finding the data pattern in multiple other SDs, may indicate an error condition. Once mirror relationships are discovered, the mirror relationships can be configured into the file server automatically so that the engineer does not have to manually configure the mirror relationships. The same mechanism can be used to check mirror relationships from time to time, for example, to detect possible problems with the RAID system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.