根据这个兼容性指南，VMware Compatibility Guide: Storage/SAN Search, Clariion应该是不行的。
另外EMC有一个KB86056:There is no plan for a firmware upgrade to the CX4 family to achieve VMware HCL with ESXi 5.0.
The EMC CLARiiON CX4 family of arrays is not certified on VMware HCL with VAAI block acceleration Primitives on VMware ESXi 5.x. Using configurations where VAAI block acceleration is enabled on CX4 with ESXi 5.x is considered an unsupported configuration by VMware. If you encounter an issue that is reproducible after disabling the VAAI block acceleration primitives, VMware Global Support Services can be engaged to continue troubleshooting the reported issue in collaboration with EMC Support Staff.