Storage recovery from total cache loss using journal-based replication
US9146878B1 · kind B1 · utility
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128References
14Claims
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Key dates
| Filing date | Jun 25, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Apr 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/313
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one aspect, a method includes receiving write I/Os for storage in a primary storage array, splitting the write I/Os to a replica site, storing the write I/Os for storage in the storage array in a cache, periodically de-staging the write I/Os in the cache to a volume and after a cache data loss, restoring lost write I/Os from the cache by using the write I/Os split to the replica site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.