Rackable Systems OmniStor 4900F Series, Руководство пользователя

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Chapter 2 - Topologies and Operating Modes
Dual Port Multi-Host Dual Connection
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Dual Port Multi-Host Dual Connection
This topology provides a base shared RAID storage solution for up to four host systems. It
offers the following advantages: clustered storage between multiple host system (no
requirement for external hubs or switches). It has a few disadvantages: the controller and
the single fibre loop are single points of failure, for clustering operations third-party
clustering software is required and it also has limited bandwidth performance due to a singe
Fibre loop (200 MB/sec).
Simplex Operating Mode Logical View - Dual Port Multi-Host Dual Connection
In this topology the Host I/O card switches 1, 2, and 4 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 4 provides the link between the Host I/O card “H0” and “H1” ports to the
same Fibre loop.