Method, system and program products for providing user-managed duplexing of coupling facility cache structures
US6539495B1 · kind B1 · utility
25Cited by
20References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Coupling facility store-in cache structures are duplexed in order to improve data availability. That is, once duplexing is established, selective data is written to both a primary structure instance and a secondary structure instance. Thus, if one of the structure instances fails, then the other structure instance is used in order to prevent data from being lost. Duplexing can be started manually and/or automatically by the operating system. Further, a structure may be removed from duplex mode and enter simplex mode, if duplexing is not desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.