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Replication is a mechanism extensively used to guarantee the availability and good performance of data storage services. Byzantine Quorum Systems (BQS) have been proposed as a solution to guarantee the consistency of that kind of services, even if some of the replicas fail arbitrarily. Many BQS have been proposed recently, but comparing their performance is not simple. In fact, it has been shown that theoretical metrics like the number of steps or communication rounds say as much about thedoi:10.1109/srds.2007.4365701 fatcat:zffrdmkn5ffa3nvmhyarsp7hmu