A distributed data center and its quality of services (QoS) is an important element of information technology infrastructure. Data centers are required to support the critical business application continuity by providing the highest level of data availability, integrity, and data consistency. Another aspect of distributed data center QoS is real time backup and recovery process. Traditionally data center mangers rely on different techniques to keep the data centers continually working and avoid any unexpected downtime such as redundant hardware and local backup sites. In this work we investigate the correlation between the different performance parameters related to network, mirroring technology, data center, and the system resilience.
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