[Users] Do I really have to use ISO uploader?

I’m trying to move from ESXi to KVM/OVIRT. To attach an ISO to a CDROM under ESXi, I just have to add the NFS share with all my ISOs, then go to the CDROM and attach one of the ISO images and away I go. Under OVIRT, it seems like I have to create yet another datastore, use engine-iso-upload which will create yet another copy of the ISO, before I can attach it to a virtual CD device. Please tell me I missed something in my hours of searching that this isn’t true, that I don’t really have to duplicate each ISO that I already have on a NAS NFS share, to yet another copy that OVIRT can use. There also doesn’t seem to be a nice way to take a disk image and simply click “add to inventory” like I can with ESXi, that I have to use image uploader to create yet another copy of the image and wait for it to copy a 100G file before I can create a VM out of it. Thanks for any suggestions on making this process easier.