OnApp Cloud runs on CentOS. Please note that the required CentOS versions can vary, depending which virtualization method you choose, Xen or KVM.
CloudBoot is not compatible with CentOS 6 Xen compute resources and CentOS 5 KVM compute resources.
Supported server configuration
Recommended server configuration
We highly recommend using the following server configuration:
Recommended Network Configurations
Suggested Specifications for OnApp
Types of Cloud Service with OnApp