SURFsara is the National Supercomputing and e-Science Support Center in the Netherlands. As of January 1, 2013, SARA resides under the umbrella of the SURF organization in the Netherlands and has a new name: SURFsara. Among SURFsara’s customers are all of the Dutch Universities, a number of large research, educational and government institutions, and the business community. The mission of SURFsara is to support research in the Netherlands by the development and provision of advanced ICT infrastructure, services and expertise. SURFsara provides expertise and services in the areas of High Performance Computing, e-Science & Cloud Services, Data Services, Network support, and Visualisation. SURFsara hosts the large national infrastructure services, i.e. the Dutch national Supercomputer service, the National Compute Cluster, large data storage facilities and services (online capacity over 5 PB, tape capacity over 20 PB) and all important national grid services (> 5000 cores). This includes also a large part of the national grid infrastructure (the Dutch e-Science grid) that is a Tier-1 site for CERN LCG. SURFsara participates in a number of national and international HPC, e-science and grid activities. SURFsara is currently partner in the large European e-Infrastructure projects PRACE 1IP, PRACE 2IP, PRACE 3IP, EESI2, EGI.InSPIRE and EUDAT, and partner in HPC-EUROPA2. In EUDAT SURFsara leads the activity on EUDAT services and technology appraisal. SURFsara has a long history and a proven track record in providing HPCN services to the Dutch research community. Important focus is on supporting users to enable grand challenge applications. SURFsara has built broad expertise in the implementation and e-science support of grid infrastructures for the scientific research community. SURFsara provides also HPC-Cloud and Hadoop services to support research.