There is a small percentage of unstructured data that needs high performance, potentially even flash based storage but there is a much larger percentage that requires cost effective capacity. Premium NAS systems meet the performance demand of the first type, but there is room for improvement for the second type where cost efficient storage is so important. In this article George Crump, Storage Switzerland’s Lead Analyst discusses the need for a new type of Hybrid NAS, one that integrates disk and tape, instead of disk and flash.