An oVirt host image. On boot (via cdrom, flash drive, or PXE), the host image loads its keytab and kerberos configuration from the oVirt management application or from local storage and announces itself.

A kerberos/LDAP server for authentication and authorization (oVirt ships with FreeIPA).

A database for storing oVirt data. oVirt comes bundled with Postgres. Future releases will support additional databases.

DNS/DHCP services on the local LAN. If not available, oVirt can provide them for oVirt hosts over a private network if desired.

Network attached storage (NFS, iSCSI or Fibre Channel) for hosting oVirt Guests running on any machine reachable from the oVirt host. The oVirt host will automatically make the storage targets on the iSCSI server it is configured for available for oVirt guest installs.