The StorPool solution is fundamentally about scaling out (i.e. scale by adding more drives or nodes), rather than scaling up (i.e. adding capacity by buying a larger storage box and then migrating all of the data to it). This means StorPool can scale out storage independently by IOPS, storage space and bandwidth. There is no bottleneck or single point of failure. StorPool can grow seamlessly without interruption and in small steps – be it one disk drive, one server and one network interface at a time. Not only is the scale out approach simpler and less risky, it is also a far more economical method.