Rackable Systems OmniStor 4900F Series, Руководство пользователя

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Chapter 2 - Topologies and Operating Modes
Multi-Port Mirrored SAN Attach Dual Switch Connection
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Multi-Port Mirrored SAN Attach Dual Switch Connection
This SAN topology provides the most robust high-performance active-active RAID
storage solution for multiple host systems with dual Fibre ports.
It has the following advantages: full solution level fault-tolerance, high access,
high-performance, redundant switches, supports upstream path failover, no single point of
failure when using clustering and path failover software, and it provides shared storage.
Its disadvantages are the requirement for third party failover software when upstream path
failover is implemented, and it requires dual HBA’s in each host and dual switches.
Duplex Mode Logical View - Multi-Port Mirrored SAN Attach Dual 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.