The three parties assume a situation in which a wide area network such as the Internet is disrupted due to a large-scale disaster and the data backed up in a remote location cannot be used.We jointly developed a data replication method that protects data in the disaster area and enables continuous provision of information services.

　In the simulation in the research, it is assumed that 24% of the 50 servers installed in the local government areas at the prefecture or city level are damaged.At the same time, it was confirmed that 94% of the data can be protected by replicating the data between servers that are unlikely to be damaged.In addition, by changing the number of data to be duplicated according to the risk of data loss, we succeeded in protecting the same amount of data with half the number of data duplicates compared to the conventional method.With this technology, it will be possible to build a disaster-resistant information platform at low cost.

　In the future, we will install the developed data replication method on the server, place many on three campuses of Tohoku University to build a large-scale verification environment, and create an "electronic medicine notebook application" in collaboration with the Miyagi Prefecture Pharmacist Association. Conduct a demonstration experiment using the "system".It is said that it will promote technological development in collaboration with the "Tohoku IT Reborn Consortium" established after the earthquake.