According to analyst firm IDC, IT leaders today face three brutal realities. First, data volumes are exploding. In fact, IDC expects the “digital universe” of global data to double in size every two years between now and 2020, when it will reach 44 zettabytes. 1 In more familiar terms, that’s 44 trillion gigabytes. It’s coming not just from traditional structured sources like databases and unstructured data like documents and videos, but also from a new breed of emerging workloads such as analytics, surveillance, and the Internet of Things (IoT)that demand more scale and longer data retention times.