Campus topology – HP Surestore Disk Array 12h and FC60 User Manual

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Topologies for HP-UX 125

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Campus Topology

The campus topology uses the same hardware components as the high availability,
distance, and capacity topology. The components for each instance of this topology
include:

• Up to four host systems or servers

• Two Fibre Channel I/O adapters per host

• Two pairs of cascaded 10-port HP Fibre Channel-AL Hubs

• Two controller modules per disk array

• Maximum of nine dual-controller module disk arrays

• Maximum 500 m fibre optic cable distance on each connection between each host and

HP Fibre Channel-AL Hub and between each HP Fibre Channel-AL Hub and disk array,
for a total Fibre Channel-AL cable length not to exceed 5000 m

This topology is almost identical to the high availability, distance, and capacity topology.
The difference is that in the campus topology one-half of the host systems, HP Fibre
Channel-AL Hubs, and disk arrays are located in one building while the other half of the
hosts, HP Fibre Channel-AL Hubs, and disk arrays are located at another site. The
distribution of systems and hardware between two physical sites provides protection
against a power failure or some other catastrophic site-wide failure.