I've been able to successfully upload a small windows server 2012 image(12GB) into openstack but when i attempt to upload my 2008 R2 image(23GB) into openstack it failed without any real reason in the GUI anyway.. I have a 6TB datastore allocated for openstack images so im wondering if its holding the image on one of the VIO VMs before placing it on the datastore and the VIO VM doesnt have enough space. Thoughts?