USO™ delivers unprecedented Scalability, fully featured NAS, and IP SAN in one easy to manage appliance. You do not have to decide which technology to use when you can have one solution that gives you both. USO™ series of appliances are created based on customer's feedback in past 10 years for needing a powerful storage solution that can scale out storage capacity while scaling up the performance. That is what StoneFly is delivering with USO™. Stonefly delivers ISCSI + NAS storage.