There are three basic elements of performance in a data center; its processing power harnessed by servers, its network harnessed by switches and routers, and its storage which consists of the disks harnessed by SAN and NAS controllers. Each of these elements is under constant strain to keep up with the digital demands of their users. Servers and networks have kept pace through added power and intelligently utilizing that power, but storage has not and has become the bottleneck of the enterprise. Now the storage bottleneck has moved beyond being an IT problem and has created a perilous situation for the organization as a whole. So what’s Causing the Storage IO Bottleneck?