Fabric zoning best practices (new to FC)

[Steve2point0]

I'm new to FC (we're an iSCSI shop), but I'm trying to learn for my DCD. I've been reading on various blog posts about zoning, which I believe over all makes sense. I came across this blog article and am slightly confused by the diagram:

http://vmfocus.com/2012/05/31/fabric-zoning-best-practices/

If you look at the graphic it makes sense, but above that look at the text:

http://vmfocus.files.wordpress.com/2012/05/capture.png

E1 to S1 via Fabric Switch 1

E1 to S3 via Fabric Switch 2

E2 to S2 via Fabric Switch 1

E2 to S4 via Fabric Switch 2

E3 to S1 via Fabric Switch 1

E3 to S3 via Fabric Switch 2

E4 to S2 via Fabric Switch 1

E4 to S4 via Fabric Switch 2

How can the same physical port on the HBA connect to switch 2? Is the text in the article incorrect? I don't presume to know more than any one about FC zoning but I don't see how E1 can be plugged into more than one switch.

Totally confused....

Steven

[skadann · Accepted solution]

Utilizing my incredible art skills, I drew a diagram for you:
http://i.imgur.com/WU6iGGv.png

A high level view of a fibre channel SAN should look incredibly similar, if not identical to your iSCSI network. The text is just describing the logical connections the various server ports can make, just like ethernet. Let me know if this this clears it up, or I'll go into more detail with whatever you'd like.

[Steve2point0]

Ok that makes much more sense, thank you very much for the art work.

Steven