Should I use Brocade Access Gateway or ISL to connect an HP c-class enclosure to SAN?

I've had an HP EVA 8000 SAN with brocade 4/32 and 4/64 switches. Now I want to connect blades in an HP c-Class enclosure to the SAN using brocade 4/24 switches in the blade enclosure.

I've been reading about the Access Gateway feature in the brocade 4/24 switch. Is that the best/easiest way to make this connection, or should I be looking into ISL links instead?
ft4249Asked:
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andyalderConnect With a Mentor Commented:
Well it eliminates hetrogeneous switch-to-switch interoperability problems but that's not a problem since you only have Brocade anyway. In that way it is similar to Virtual Connect.

It's April 2009 now and I haven't implimented it yet although the marketing bumf is dated May 2007. Traditional Brocade switches in their normal mode are known to most storage engineers, so I would stick to ISLs. I guess it depends on how big your SAN is though, if you're talking several hundred servers and tens of storage boxes it might be worth considering, but if not I wouldn't bother.
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