Long distance fast data transfer experiments for the ITER Remote Experiment

Yamanaka, Kenjiro*; Nakanishi, Hideya*; Ozeki, Takahisa; Abe, Shunji*; Urushidani, Shigeo*; Yamamoto, Takashi*; Otsu, Hideo; Nakajima, Noriyoshi*

Development of effective and fast data transfer system for the huge amount data between Europe and Japan is a critical issues for ITER Remote Experimentation Center (REC). To implement the system, effective data transfer methods and wide bandwidth international network are required. 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 bps data transfer from NIFS to Dubline, Ireland. Furthermore, by using MMCFTP and 100 Gbps line, we successfully achieved the stable transmission of 1 PB of data at approximately 84 Gbps, which is an order of the world's fastest transmission speed. This paper also describes the upgrade plan of SINET, which will be upgraded to the network based on 100 Gigabit Ethernet technology in April 2016.