Method, computer readable medium, and data storage system for selective data replication of cached data
US7552282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2004 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0802
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described are techniques for selective data replication. Cached data is replicated if it is characterized as critical. Critical data may include data associated with a write I/O operation. Cache locations are selected for replicated data so that a first location is mapped to a first memory board and a second location is mapped to a second memory board. Data for a read operation is not replicated in cache. Other non-cache data that is critical and thus replicated includes metadata. Cache locations for data of read and write I/O operations are selected dynamically at the time the I/O operation is made from the same pool of cache locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.