Propose a high available information system infrastructure for business continuity and a specification of the fault-tolerance proving test

Abstract

Many important data such as medical records are lost in the Great East Japan Earthquake. Not only the quake damaged the storages but also the tsunami washed out them. The backup data in cloud storages are not lost but they cannot be retrieved in the disaster area because of a disruption of the Internet. In this paper we propose a new high availability information storage infrastructure. The storage devices are distributed in a local community not in a globe. Even in the case the communication network is lost, walking or driving to the backup location you can retrieve the data. In order to realize high availability, risk-aware replication is proposed. The infrastructure will be tested in disaster scenario.