System and method for maintaining cache coherency and data synchronization in a computer system having multiple active controllers
US6247099A · kind A · utility
141Cited by
3References
41Claims
0Family size
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Key dates
| Filing date | Jun 3, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Jun 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
System, method and computer program for maintaining cache coherency amongst a plurality of caching storage controllers operating in unison supplying data in response to requests from one or more host computers. The method comprises the steps of defining a reservation data structure to maintain reserved, partial, and full ownership status of data extents that are part of the logical unit or storage volume, and using the reservation data structure to verify that a new update to the data is allowed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.