Dell EMC PowerFlex (previously known as ScaleIO and VxFlex OS), is a commercial software-defined storage product from Dell EMC that creates a server-based storage area network (SAN) from local server storage using x86 servers. It converts this direct-attached storage into shared block storage than runs over an IP-based network. PowerFlex can scale from three compute/storage nodes to over 1,000 nodes that can drive up to 240 million IOPS of performance. PowerFlex is bundled with Dell EMC commodity computing servers (officially called VxFlex Ready Nodes, PowerFlex appliance, and PowerFlex rack).