Telescope Unterweilenbach/Garching - run by Max Planck Institute for Astrophysics Tautenburg - at the site of the Thüringer Landessternwarte Tautenburg (Thuringian State Observatory) Potsdam-Bornim - run by Astrophysikalisches Institut Potsdam Jülich - run by the University of Bochum, Jacobs University Bremen, and Forschungszentrum Jülich Norderstedt - run by Hamburger Sternwarte and Universität Bielefeld United Kingdom Chilbolton - at the site of the Chilbolton Observatory France Nançay - at the site of the Nançay Radio Telescope Sweden Onsala - at the site Onsala Space Observatory Poland Bałdy - run by the University of Warmia and Mazury in Olsztyn Borówiec - run by the Space Research Centre of Polish Academy of Sciences Łazy - run by Jagiellonian University Ireland Birr - at Birr Castle Latvia Ventspils - at the site of Ventspils International Radio Astronomy Centre in Irbene Italy - planned at the site of the Medicina Observatory NenuFAR The NenuFAR telescope is co-located at the Nançay radio telescope. It is an extension of the Nançay LOFAR station (FR606), adding 96 low frequency tiles, each consisting of a "mini-array" of 19 crossed-dipole antennas, distributed in a circle with a diameter of approximately 400 m. The tiles are a hexagonal cluster with analogically phased antennas. The telescope can capture radio frequencies in the 10-85 MHz range, covering the LOFAR-Low Band (30-80 MHz) range as well. The NenuFAR array can work as a high-sensitivity LOFAR-compatible super-LBA station (LSS), operating together with rest of LOFAR to increase to array's global sensitivity by nearly a factor of two, and improve the array's imaging capabilities. It can also function as a second supercore to improve array availability. Due to its dedicated receiver, NenuFAR can also operate as a standalone instrument, known as NenuFAR/Standalone in this mode. Other stations Additionally, a set of LOFAR antennas is deployed at the KAIRA (Kilpisjärvi Atmospheric Imaging Receiver Array) near Kilpisjärvi, Finland. This installation functions as a VHF receiver either in stand-alone mode or part of a bistatic radar system together with EISCAT transmitter in Tromsø. Data transfer Data transport requirements are in the range of several gigabits per second per station and the processing power needed is several tens of TeraFLOPS. The data from LOFAR is stored in the LOFAR long-term archive. The archive is implemented as distributed storage, with data spread over the Target data centre located in the Donald Smits Center for Information Technology at the University of Groningen,