Long distance fast data transfer experiments for the ITER Remote Experiment

• Published in: Fusion engineering and design 2016-11, Vol.112, p.1063-1067
• Main Authors: Yamanaka, Kenjiro, Nakanishi, Hideya, Ozeki, Takahisa, Abe, Shunji, Urushidani, Shigeo, Yamamoto, Takashi, Ohtsu, Hideo, Nakajima, Noriyoshi
• Format: Article
• Language: English
• Subjects: Bandwidths; Data transfer (computers); Data transmission; Ethernet; Experimentation; Fast data transfer; Fusion; GÉANT; ITER; MMCFTP; Packet pacing; Packet switched networks; Plasma; Remote experimentation; SINET
• ISSN: 0920-3796; 1873-7196
• DOI: 10.1016/j.fusengdes.2016.07.008

•This paper presents fast data transfer experiments using packet pacing and mmcftp and results.•An upgrade plan of Japanese Academic Network SINET is also described.•To send the huge amount of data from ITER to the ITER Remote Experiment Center (REC), effective transfer method and super high-speed international network are required.•This paper presents a progress of the investigation for fast transfer method. Developing effective and fast data transfer system for the huge amount data between Europe and Japan is a critical issue for the ITER Remote Experimentation Center (REC). To implement the system, effective data transfer methods and wide bandwidth international network are required. This paper describes results of data transfer experiments. We have evaluated two data transfer methods: Packet Pacing and MMCFTP. By using Packet Pacing and 2.4 Gbps line, we achieved 2.2 Gbps data transfer from NIFS to IFERC. By using MMCFTP and 10 Gbps line, we achieved 2.5 Gbps data transfer from NIFS to Dublin, Ireland. Furthermore, by using MMCFTP and 100Gbps line, we successfully achieved the stable transmission of 1PB of data at approximately 84 Gbps, one of the world’s fastest transmission speeds. This paper also describes the upgrade plan of SINET (a Japanese academic backbone network), which is used for ITER and REC communications. SINET will be upgraded to the network based on 100-Gigabit Ethernet technology in April 2016. Furthermore, direct lines of 20 Gbps (10 Gbps×2) between Japan and Europe will be introduced. These direct lines will reduce latency between Europe and Japan and will realize higher speed data transfer.