ESXi 3.5 is VMware’s next-generation hypervisor technology, co-developed with Dell to facilitate embedded virtualization. Dell recommends evaluating embedded VMware ESXi 3.5 for simplified deployment and higher security in shared-storage environments. As the virtualization ecosystem is adapting to VMware’s new hypervisor architecture, the CD-ROM based VMware ESX 3.5 will still have the broadest compatibility with 3rd-party management tools and provide the most robust management environment.
According to Dell