Over time, IT systems have become more complex & difficult to manage. Without the right systems in place, you run the risk of spending too much time on operations & maintenance & not enough time on innovation. You need a flexible infrastructure that can meet today's ever-changing business demands. The IBM Flex System Storage Expansion Node is an element of the IBM Flex System family & the IBM Pure Flex system family, which combines compute, storage, networking, virtualization & management into a single system that anticipates resource, needs to help you optimize your infrastructure. The IBM Flex System Storage Expansion Node provides dedicated hard disk drives (HDDs) or solid state disk (SSD) storage to an IBM Flex System x 220 & x 240 compute node, which expands the compute node's capability.