Checkpointing for recovery of channels in a data processing system
US6687853B1 · kind B1 · utility
4Cited by
7References
36Claims
0Family size
Assignee
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Key dates
| Filing date | May 31, 2000 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Apr 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1443
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, program product and apparatus for checkpointing for recovery of channels in a data processing system using a protocol which allows for multiplexing operations at the frame level and streaming of commands and data. For unsuccessful retries, the correct primary CCW address is reported back to software indicating the extent to which the channel completed modifying and accessing S/390 storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.