Windows Server 2008 R2 Datacenter is optimized for large-scale virtualization on small to large server systems & for workloads that require the highest levels of scalability, reliability, & availability to support large, mission-critical applications. With unlimited virtualization use rights & a hypervisor-based virtualization technology, Windows Server 2008 R2 Datacenter provides the flexibility & cost savings to easily run large numbers of virtualized Windows Server instances. Windows Server 2008 R2 Datacenter supports the memory & processing needs of large-scale, business-critical workloads such as ERP, databases, server consolidations, & custom & line-of-business applications.