I am unsure if this categorization of food exist only in Chinese culture or if it exists in other (Asian) cultures. In China, a lot of the food is separated into either "cold" or "hot". 

Some examples of "cold" food types are:


most fruits (apples, pears, etc)
tea
some herbal remedies(gingseng, ram horn water, etc)


Some examples of "hot" food types are:


some fruits (mangoes, pineapple, etc)
deep fried foods
pan-seared/ pan fried foods
coffee


Generally since I was young, I've been brought up to eat a balance of the "hot" and "cold" food. I was curious if this "hot" and "cold" categorization can be quantified into anything concrete? Can this categorization be backed by any sort of food science that finds a similarity between all the "hot" foods and all the "cold" foods.


Question: Fiber Channel SAN hooked up to 2 ESXi Hosts
Answer: The SAN itself doesn't need an Ethernet connection in this case, all it needs is FC to the ESXi hosts. The ESXi hosts will need GigE Ethernet. During VMotion, the source ESXi starts sending machine-state to the target ESXi host over the VMKernel connection in the virtual-switch. That's actually a connection between the two ESXi hosts over your physical Ethernet switch. Meanwhile, when state is fully transferred control of the VMDK files is passed over to the target server it it goes live. So, vMotion requires both FC and Ethernet.

HA (what I presume you meant by HV) requires vMotion to work, so should be available if vMotion is working. 

Unless you meant Hardware Virtualization, or direct LUN presentation. That can also work, but is trickier. The same volume needs to be presented to both ESXi hosts using exactly the same LUN number, if it doesn't have the same LUN number that volume won't be visible when the VM is on one or the other ESXi host.