Examples Of Redundant Architectures Using Serial Storage; Dual-Domain Sas - HP 381513-B21 - Smart Array P800 Controller RAID Technology Brief
Redundancy in enterprise storage networks using dual domain sas configurations
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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
.
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
5
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