Surviving storage system takeover by replaying operations in an operations log mirror
US7774646B2 · kind B2 · utility
4Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Feb 20, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for rapidly resuming the processing of client requests after a system failure event are disclosed. Accordingly, a surviving storage system, upon detecting a system failure event at a partner storage system, executes a takeover routine and conditions its system memory to reflect the state of the system memory of the failed storage system by processing client requests or commands stored in an operations log mirror. Then, the storage system converts the unused portion of the log mirror for use as an operations log, and resumes processing client requests prior to flushing any data to storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.