Behind NSX, VSAN was the next most talked about item at VMworld US 2013 and for a good reason. VSAN introduces the opportunity to change the way storage is used in the datacenter. VSAN also introduces a paradigm shift for VMware. Prior to VSAN, VMware encouraged the use of shared storage to leverage features like DRS and HA. The importance of locally attached disks was minimized even more with the support of boot from SAN and auto deploy. Now with VSAN and vFlash, local disks are important again, but is the change coming too late?