How to properly configure Fiber channel switching?

Question

Iron

Good afternoon
There is a relatively ancient promise vtrak e610f shelf, there are fc controllers with a speed of 4Gb / s.
Now 1 more server needs to be connected to this shelf, and all ports are busy, so I wanted to ask for advice.
shelf supports only 2 port types N-port and LN-port
Polling
1 - Should Multipath I/O be supported only on the host side? or should there be something unspeakable about this on the shelf? (I want to create and combine several rings)
2 - tell me a not very expensive FC switch?

Answer 1

It's better to ask this question on the naga forum.