OPS1E application has been tested and supports following VMware host versions:
- ESX 4.0 and later hosts
- ESXi 4.0 and later hosts
- Free ESXi 4.0 and later hosts*
- vShpere 4.0 and later Virtual Center management servers
*Note: Free ESXi servers are supported by OPS1E applications. However, VMware allows read-only Host server management, full server management requires ESXi server license upgrade to a paid version.