1. Fibre Channel Connection Type:

Use the↑↑ ↓↓ keys to scroll down to “View and Edit Configuration Parameters,” "Host-side SCSI Parameters," and then "Fibre Connection Option." A prompt will display all the options. Select one appropriate for your Fibre channel topology. If connection to host is through a Fibre hub, choose "Loop only."

If connection to host is through a Fibre switch F_Port or directly to a server, choose "Point to point only." Proper selection is necessary and will decrease overhead on data transmission.

A redundant controller configuration should always have its host connection configured in FC-AL mode. For a switched fabric configuration, a redundant controller system can be connected to the FL_ports on an FC switch and then the host computers connect to its F_ports.

View and Edit Drive-Side Parameters

2. Drive-Side Dual Loop:

Fibre drives are usually configured in a JBOD enclosure. Through the enclosure backplane, these drives form one or two circuit loops. You may choose to assemble certain number of disk drives into a dual-loop configuration using two of the controller channels.

To configure a dual-loop, connect two of the drive channels each to an FC-AL port on the drive enclosure (JBOD). Please refer to the related documents that came with your drive enclosure for the connection details.

The dual-loop configuration not only doubles traffic bandwidth by separating the transmitting and receiving paths but also provides path redundancy. I/O traffic will be continued should one data path fail.

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Infortrend

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Compaq Infortrend manual Fibre Channel Connection Type, View and Edit Drive-Side Parameters Drive-Side Dual Loop