Currently, our whole infrastructure stack is residing on the VMware hypervisor. Everything we use is running on VMware. We have multi-site vCenter data centers. We have four sites, but they are two separate pairs of sites that provide redundancy. We will shortly also use VMware Site Recovery Manager for the two to four hours disaster recovery strategy.
We are on version 6.5 or 6.7, and we are moving to version 7.0 shortly.