ESXi 5.5 free limitations has been removed by VMware. VMware ESXi 5.5 Free version limitations to 32 GB of physical RAM only is no more. VMware has introduced the new enhanced version of VMware vSphere 5.5. System Admins, It Engineers, everyone using the Free version of ESXi for their Lab purpose , the hard limit of 32Gb of RAM on the Free ESXi 5.1 and the RAM limit was very difficult for them to work on wasn’t really a good thing.
ESXi 5.5 Free version of VMware hypervisor is now available for download, but for lab purpose you need minimum vCenter Essential Kit. By using Free Version of ESXi 5.5 you can overcome that . Also with help of free license key which unlock some advanced features for testing.
Upgraded Supports
320 physical CPUs per host
4 TB of Memory
16 NUMA Nodes
4096 vCPUs can be allocated to VMs
Features of ESXi 5.5 Free version