KISTI said on April 21st that it will expand its GSDC data bandwidth to 10 Gbps. Korean scientist can receive LHC source data 10 times faster than now and real-time utilization of its data is expected to improve the competitiveness of R&D on basic science. By building up 10Gbps data bandwidth between Daejeon and Geneva, KISTI can transmit 1 PB data in 23 days which took 289 days with 2Gbps before. The expansion of 10 Gbps is a follow-up action of CERN’s approval on April, 2014 of Tier-1 center for Ministry of Science, ICT and Future Planning(MSIP) and KISTI. KISTI expanded the bandwidth of Daejeon-Chicago section to 10Gbps and secured Chicago-Geneva section by collaborating with “SURFnet” of Netherlands. Korea scientists were not easy to access to CERN In the meantime, Korean scientists were not easy to approach CERN and used to suffer from data delay till now.