Storage system and method of storage system path control
US7603507B2 · kind B2 · utility
11Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2008 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | May 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention uses memory resources effectively and connects each storage device by a plurality of paths in a switchable manner, thus improving reliability and ease of use, by virtualizing external memory resources as internal memory resources. External storage 2 is connected to the main storage 1, and the actual volume 2A is mapped onto the virtual volume 1A. A plurality of paths is connected between the storage 1 and 2. When a failure occurs in a path in use (S3), the path having the next highest priority is selected (S4), and processing is continued using this path (S5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.