Red Hat Enterprise Virtualization 3.1 - Advanced Storage Features Subscriber content preview. For full access to the Red Hat Knowledgebase, please log in.Not a subscriber? Learn more about the benefits of Red Hat Subscriptions. Published 2013-02-12T20:54:17+00:00 This video showcases the "floating disk" feature of RHEV 3.1. A floating disk is virtual disk that is not attached to any virtual machine, but can be moved around or shared between virtual machines.