Rackable Systems OmniStor 4900F Series, User Manual, Page: 50 / 196

Chapter 2 - Topologies and Operating Modes
Multi-Port Mirrored SAN Attach Single Switch Connection
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Multi-Port Mirrored SAN Attach Single Switch Connection
This SAN topology provides another robust high-performance active-active RAID storage
solution for multiple host systems with dual fibre ports.
It has the following advantages: system level fault-tolerance, high access, high-performance,
shared storage, and a lower cost to deploy then the multiple switch configuration.
Its disadvantages are a SAN heterogeneous environment software or volume management
for homogenous environment software to effectively manage it.
Duplex Mode Logical View - Multi-Port Mirrored SAN Attach Single Switch Connection
In this topology the Host I/O card switch 1, 2, and 6 are set to the “Up” position.
Switch 1 sets the bus speed mode on the Host I/O card to 2 GB/sec.
Switch 2 configures the enclosure for the Wahoo2 RAID Controller.
Switch 6 enables automatic internal hub failover during a controller failure.