If you can access support.emc.com, the Best Practice Guides for VNX contain the current information about disks and speeds. This document also contains information about calculating performance expectations.  [URL]  glen
Can someone provide disk type and IOPs for CX's and VNX's.  How to identify the disk type whether its EFD, SSD.... How to check the RPM of a disk What will be the IOPs for each disk. How to calculate IOPs for Storage Pool or Individual Lun or by host.      
Can someone provide disk type and IOPs for CX's and VNX's