4 Fabric switches in a full mesh - single poitns of failure?

[Megalomaniac]

I have a dilemma, I have 2 IBM DS 4700 SANs and each one has 2 controllers. The controller each have 2 Fibre Channel Ports (FC). Port 2 is always used for mirroring. So you have port 1 on Controller A and port 1 on Controller B for data.

The SANs are located 1 mile apart.
At each location, I also have 2 Cisco 9124 Fabric Switches. I can not, due to the VMware software deployed, implement a dual fabric solution. So I need a single fabric but physically redundant solution.For now, I am considering a full mesh between the 4 switches.

I am wondering what single points of failure I might have. I am also wondering if the SAN will be able to properly direct traffic for both data and replication should one of the switches fail. (when i say direct, i mean to the controller that is still connected to a fabric switch)

Thanks!

 

[sabregen]

as stated in the other subforum, give me a diagram. you can dual fabric a vmware implementation without issue...so I'm not sure what yours is until i see the pretty picture.