Abstract
The increased demand for continuous operation of data centers in recent years has created great interest in remote backups, which allow systems to continue their application and operation even in the presence of disasters. Data centers (DCs) provide computing service, storage service and network service. All of these different services mean that DCs management is a complex task. Disaster such as power outage and natural hazard may happen at a certain probability, so DCs management is not easy, and essential measures should be taken. In this paper we discuss the technique of disaster recovery (DR) and classification of disaster tolerance (DT). Then to cope with the various risks as mentioned before, a matrix of IT DT measures and different ranks for DCs applications is created. Experts who are specialized in DT assessed the validation of the matrix. The result is an effective tool to improve DCs high availability, and to accelerate the employment of DR. At last a SDN-like distributed DT architecture is described.
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