Cisco DNA Center installs very well, using the original DNAC ISO installation file, directly into an ESXI environment, absolutely no issues. You need a server with dual CPU with at least 12 cores each, better 16 or 20 cores and a minimum 256GB of RAM. The secret of a successful installation is in giving enough CPUs, enough RAM(256GB min) and very important thing - to simulate the number of disks and storage space exactly as on a DNAC physical appliance. Absolutely same disk space and number of disks, otherwise DNAC will install but it will be very unstable and do weird things, like not showing or opening different things on the GUI. DNA Center will install perfectly if you follow the specs of a real physical DNAC appliance or server from Cisco. I have already installed DNA Center on different servers using the ISO file from the Cisco website. I can add and manage Cisco devices, no issues.
No need for an OVA file or anything like that.
Good luck!
