Disaster Recovery Architecture of Information System

Disaster backup and recovery technology can efficiently ensure the information system to work normally when the disaster occurs,so it becomes a very important field in information security. In this paper,based on the 7 tiers of disaster recovery solutions defined by SHARE 78 of IBM,the disaster recovery system is partitioned into data level,system level and application level. According to these levels,the 9 tiers of disaster recovery solutions are redefined reasonably,and each of them is qualitatively explained and quantitatively prescribed . The disaster recovery architecture of the information system is presented,and the relation,among disaster recovery objects,backup and recovery technologies and disaster recovery plans and measures,is described in a three-dimensional model,in order to provide the whole disaster recovery framework and solution of the information system.