[ovirt-users] VDI question: How much disk space used?

Hello, I have a question about VDI and the use of a VM pool. Are the VMs that are part of the pool linked clones or full clones of the pool's template VM? Let's say my template VM has a HDD of 64GB, fully allocated. I create a VM pool that uses that template and the pool consists of 5 VMs. Do I need to have 64GB x 5 = 320GB of disk space available (actually 384GB, counting the template VM), or just the 64GB of the template VM + whatever temporary space is used by each VM for the temporary changes made while a user is using the VM? (I hope that makes sense?) Thanks! :-) Regards, Alan