The representative facilities at NIFS are the superconducting Large Helical Device (LHD) and Plasma Simulator. An overview of such a large-scale fusion research system will be presented. LHD is the plasma confining machine with having superconducting helical and poloidal coils. The LHD experiment started in 1998, and stable operation under the condition of liquid He temperature with a continuous operation for half a year typically at each year has been so far successfully demonstrated for the period of 11 years. Real-time machine control and data acquisition of diagnostics are also established well for long pulse operation up to 54 min. For understanding the plasma properties, Plasma Simulator consists of a supercomputer having 77 TF computing speed and 16 TB main memory (these will be upgraded to 315 TF and 32 TB in 2012). The main aim of the Plasma Simulator is to construct LHD Numerical Test Reactor for designing an optimum reactor. Experimental remote participation to the LHD experiment and remote utilization of Plasma Simulator are well realized with the fast network SINET3. Such successful system integration will contribute to design of future large research systems.