EQL arrays are fully supported with ESX v3->5.1.    The arrays should be running a minimum of 5.2.5 firmware or optionally 6.0.1.   6.x firmware supports volume re-thining with ESXi v5.0 update 1+
Hi,  I am about to install our first vSphere 5.x clusters with Equallogic Storage. Do the  PS6110XV and PS6510E units support the latest vsphere ESXi 5.1 on hosts or do I need to use an earlier ESXi build e.g 5.0U1 thanks,  Gerry
ESXi Host versions for EQ PS6110XV and PS6510E