Cloud computing system reliability modeling method considering common cause fault

A modeling method and cloud computing technology, applied in reliability/availability analysis, computing, program control design, etc., can solve problems such as ill-considered common-cause failures of virtual machines, and achieve the effect of improving modeling efficiency
CN105740084AActive Publication Date: 2016-07-06BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2016-07-06

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Abstract

The invention discloses a cloud computing system reliability modeling method considering a common cause fault, and belongs to the technical field of network reliability. The method comprises the steps of determining a state combination of a similar single server of a cloud computing system and performing simplification; calculating an existence probability of the simplified state combination of the similar single server by adopting a fault tree method; determining state combinations of similar servers of the cloud computing system, performing simplification, and calculating an existence probability of each state combination; enumerating state combinations of different servers of the cloud computing system, and calculating an existence probability of each state combination; and according to the state space of the cloud computing system, calculating the system reliability according to a given demand. According to the method, a common cause fault of all virtual machines running in the servers, caused by server faults, is considered, the state space modeling is adopted, and the state space is simplified, so that the problem of state space explosion during system scale increment is solved and the modeling efficiency is improved.
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Description

technical field

[0001] The invention belongs to the technical field of network reliability, and in particular relates to a reliability modeling method considering common cause failures of cloud computing. Background technique

[0002] As a new computing model, cloud computing combines a large number of computing resources into a data center and provides them to users in the form of services, which brings convenience and reduces computing and storage costs, and has been widely used. However, the frequent failures of cloud computing systems also draw people's attention to its reliability, and its complex structure makes it difficult to analyze the reliability of cloud computing. At the same time, virtualization, as a key feature of cloud computing systems, is realized by creating multiple virtual machines (VMs) on physical servers. On the one hand, it realizes the sharing of cloud computing infrastructure and improves resource utilization. When , multiple virtual machines run...

Claims

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