See attached image. Looks like you are good as long as you have the HBAs listed in the attached image  [IMAGE]
Hello experts,  we have been asked to validate the hardware infrastructure described below for use with a very small VMware vSphere 4.1 Update 1 deployment described below:  ==================================================  - 1x EMC CLARiiON AX4-5F Dual SP enclosure with Fibre Channel front-end ports.  - 2x FC Direct Attached IBM x3650 M3 hosts each running VMware vSphere 4.1 Update 1. Each host will be equipped with 2x QLogic 4Gb FC Single-port HBAs  ==================================================  As per VMware Compatibility Guide I understand FC Direct Attached configurations should be supported to connect ESXi hosts to an EMC CLARiiON AX4-5F System, however VMware has put some footnotes (see image below): [IMAGE]  Could you please confirm whether an EMC CLARiiON AX4-5F FC Direct Attached configuration is actually supported for use with the very simple VMware vSphere 4.1 Update 1 deployment described above and whether known limitations exist ?  As per VMware Compatibility Guide I also understand EMC CLARiiON AX4-5F Systems are currently supported for use with VMware vSphere up ESX/ ESXi 4.1 Update 1.  Could you please confirm whether EMC CLARiiON AX4-5F Systems are about to be supported for use with VMware ESXi 5 too ?  Thank you in advance for your support.  Best Regards,  Massimiliano Rizzi 
EMC CLARiiON AX4-5F + VMware vSphere 4.1 Update 1 FC Direct Attach support 
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