Cloud Standby System and Quality Model

http://hipore.com/ijcc 48 CLOUD STANDBY SYSTEM AND QUALITY MODEL Alexander Lenk, Frank Pallas FZI Forschungszentrum Informatik Friedrichstr. 60, 10117 Berlin, Germany {lenk, pallas}@fzi.de Abstract Contingency plans for disaster preparedness and concepts for resuming regular operation as quickly as possible have been an integral part of running a company for decades. Today, large portions of revenue generation are taking place over the Internet and it has to be ensured that the respective resources and processes are secured against disasters, too. Cloud‐Standby‐Systems are a way for replicating an IT infrastructure to the Cloud. In this work, the Cloud Standby approach and a Markov‐based model is presented that can be used to analyze and configure Cloud Standby systems on a long term basis. It is shown that by using a Cloud‐Standby‐System the availability can be increased, how configu‐ ration parameters like the replication interval can be optimized, and that the model can be used for supporting the decision whether the infrastructure should be replicated or not.

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