Non-disruptive storage device migration in failover cluster environment
US8775861B1 · kind B1 · utility
12Cited by
11References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 28, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of performing data migration from a source storage device to a target storage device in a failover cluster includes use of a roll-forward flag to signal successful completion of a migration operation from a migration node to failover nodes of the cluster, reliably controlling host access to the target storage device to ensure that it is used only when it has been successfully synchronized to the source storage device and a commit operation has occurred that ensures that subsequent read and write operations are directed exclusively to the target storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.