For the entire data center, as a private cloud, I believe that user management, expert management, and the virtual data center is completely magic for the users.
OpenNebula is a lightweight and customizable solution that integrates well with SAP Storage, offering features like live migration and effective scaling. Users appreciate its easy deployment and maintenance, but it lacks object storage, billing software, and a simple REST API. Some vital features, like backup, are limited to the enterprise edition. It relies on XML-RPC and lacks the efficiency of JSON outputs. Improvements are needed in hosting platform options and deployment processes.
