[Users] How to efficiently share templates between datacenters which have local storages?

Hello, I use oVirt 3.1.0. Does anyone have an idea how to efficiently share VM templates between multiple datacenters which use local storages for VM images? I tried two methods: 1. Add another cluster to "local storage datacenter" which failed with oVirt error that this isn't allowed 2. Tried to create new NFS data domain but this isn't possible because oVirt interface allows me to create only NFS export or NFS ISO domains (not data domain) So every time when I would like to use some template in other datacenter, I have to export it to export domain and then import it in other datacenter. This isn't optimal way because templates are duplicated over datacenters. Duplication causes problems - when I want to update template, I must update it and copy to all datacenters again. And, of course, duplicated templates consume disk space. "Non-oVirt" solution, when I manually export part of local storage of one datacenter with templates via NFS and then mount it in other datacenters is also ok but I'm not sure if it will work. Thank you in advance for any advice. Regards, Adam