HP 418800-B21 Redundancy in enterprise storage networks using dual domain SAS - Page 5

Examples of redundant architectures using serial storage This section illustrates some of the redundant storage scenarios made possible by serial storage, Smart Array, and cluster computing technologies. Dual-domain SAS This dual-domain SAS architecture provides redundant pathways for cascaded JBODs. Using two IO modules for each enclosure and SAS dual-port drives, this configuration provides redundancy throughout the storage network and eliminates any single point of failure. Figure 3. Dual-domain SAS for cascaded JBODS 4 Server Controller 4 IO Module Expander IO Module Expander IO Module Expander IO Module Expander IO Module Expander IO Module Expander SAS drive SAS drive SAS drive JBOD SAS drive SAS drive SAS drive JBOD SAS drive SAS drive SAS drive JBOD 5