For both old and new applications, IT customers will need to evaluate which workloads should continue to run on scalable servers and which are ready to go into scale-out deployments, such as server farms, bladed server enclosures, clusters, and grids. IDC believes that, while many scale-out configurations are being deployed as part of the process of IT transformation, scalable servers will continue to play important roles in the datacenter as foundations, or platforms, for housing the most demanding mission-critical workloads and providing high degrees of RAS and high availability for those workloads. In addition, many will look on their consolidated workloads in the same fashion, requiring a much higher level of RAS capability than typically found in scale-out architecture systems.