The old oVirt (3.x?) ISO image wasn't requiring a big hard disk in order to install the node part on a physical machine, since the HE and other parts were running using NFS/iSCSI etc.

oVirt 4.X if I understand correctly - does require hard disk on the node.

Can this requirement be avoided and just use an SD Card? Whats the minimum storage for the local node?

Thanks,

Hetz