IBM TotalStorage FAStT700, Installation Manual, Page: 50 / 86

Connecting hosts using external devices
Use the information in this section to connect five or more hosts to the FAStT700
Storage Server. When you use external Fibre Channel switches, the FAStT700
Storage Server supports up to 64 hosts (128 host adapters, 64 host adapters per
controller) and two host adapters for each host.
Important: Host mini hub 1 and host mini hub 3 correspond to Controller A (top).
Mini hub 2 and mini hub 4 correspond to Controller B (bottom). To ensure
redundancy, connect each host to both controllers. You can use either the upper or
lower connectors on either mini hub.
You connect additional hosts to the FAStT700 Storage Server by adding host-side
mini hubs and Fibre Channel switches, (one Fibre Channel switch for each mini
hub).
Figure 36 shows an example of dual path configuration using Fibre Channel
switches. Host 1 contains two host bus adapters that are connected to host mini
hubs. To configure a host with dual path redundancy, connect the first host bus
adapter (HA1) to SW1 and connect the second host bus adapter (HA2) to SW2.
Then, connect SW1 to host mini hub 1 and SW2 to host mini hub 2.
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You can directly attach up to four Fibre Channel switches (one per mini hub) to a
FAStT700 Storage Server. Figure 37 on page 35 shows an example of attaching
Figure 36. Using two Fibre Channel switches to connect a host
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IBM
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TotalStorage
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FAStT700 Fibre Channel Storage Server: Installation Guide