Higher reliability redundant disk arrays: Organization, operation, and coding
ACM Transactions on Storage (TOS)
Mean time to meaningless: MTTDL, Markov models, and storage system reliability
HotStorage'10 Proceedings of the 2nd USENIX conference on Hot topics in storage and file systems
Walking toward moving goalposts: agile management for evolving systems
HotACI'06 Proceedings of the First international conference on Hot topics in autonomic computing
Beyond MTTDL: A Closed-Form RAID 6 Reliability Equation
ACM Transactions on Storage (TOS)
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High-end enterprise storage has traditionally consisted of monolithic systems with customized hardware, multiple redundant components and paths, and no single point of failure. Distributed storage systems realized through networked storage nodes offer several advantages over monolithic systems such as lower cost and increased scalability. In order to achieve reliability goals associated with enterprise-class storage systems, redundancy will have to be distributed across the collection of nodes to tolerate both node and drive failures. In this paper, we present alternatives for distributing this redundancy, and models to determine the reliability of such systems. We specify a reliability target and determine the configurations that meet this target. Further, we perform sensitivity analyses where selected parameters are varied to observe their effect on reliability.