Scalability Windows Server 2003 takes the scalability gains on Windows 2000 Server Family to a new height. Windows Server 2003 is designed for both scale-up and scale-out scenarios. Scale-up scenarios are enabled by symmetric multiprocessing (SMP) and CC-NUMA (Cache Coherent Non-Uniform Memory Access) optimizations, and scale-out by the various types of clustering provided by Microsoft. Windows Server 2003 scales from single processor solutions all the way up to 64 processors in a single partition and offers 8-node clustering with Enterprise and Datacenter Editions. In comparison, Windows 2000 Server scaled to 32 processors and offered up to 4- node clustering. Internal tests indicate that, compared to Windows 2000 Server, Windows Server 2003 delivers up to 140 percent better performance in the file system and significantly better performance in various other features, including Microsoft Active Directory service, Web server, Terminal Server components, and networking services.