Examples Of Redundant Architectures Using Serial Storage; Dual-Domain Sas - HP 381513-B21 - Smart Array P800 Controller RAID Technology Brief

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
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Server
Server Controller
Controller
IO Module IO Module
IO Module IO Module
Expander Expander
Expander Expander
IO Module IO Module
IO Module IO Module
4 4
Expander Expander
Expander Expander
IO Module IO Module
IO Module IO Module
Expander Expander
Expander Expander
IO Module IO Module
IO Module IO Module
Expander Expander
Expander Expander
IO Module IO Module
IO Module IO Module
4 4
Expander Expander
Expander Expander
IO Module IO Module
IO Module IO Module
Expander Expander
Expander Expander
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
JBOD
JBOD
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
JBOD
JBOD
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
SAS drive
JBOD
JBOD
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