The invention discloses a QoS-aware service chain backup method and system. The service chain backup method comprises the following steps: a QoS-aware service chain backup problem is subjected to mathematical modeling, and QoS constraint conditions and a target function of the service chain backup problem are set; a service chain with the reliability lower than a reliability threshold is subjectedto backup of a virtual network function according to the QoS constraint conditions of the service chain backup problem, if the to-be-backed up virtual network function exists, an existing backup virtual network function is preferentially selected to serve as a shared backup, and if the to-be-backed up virtual network function does not exist, a new backup is created; and a final service chain backup scheme is determined according to the QoS constraint conditions and the target function of the service chain backup problem. According to the QoS-aware service chain backup method and system, the QoS requirement is combined with the backup process, the sharability of the backup network function is considered, therefore, excessive backup of the VNF is reduced, and the resource utilization efficiency and reliability of the service chain are improved.

QoS-aware service chain backup method and system

The invention discloses a deployment method of software middleware of a multi-tenant data centre. The physical topological information of a data centre and the requests of tenants are taken as input; the demands of the tenants for virtual machines, the middleware and network resources are set based on a tenant virtual machine demand model; bandwidths are reserved for the tenants through the steps of searching a minimum subtree, deploying the tenant virtual machines and reserving network bandwidths; the deployment problem of storing the application virtual machines and the middleware virtual machines of the tenants can be effectively coordinated; the data centre can both ensure the demands of the tenants for the virtual machines, the middleware and the network and receive the quantity of the tenant requests to the maximum extent; and the income of the data centre is improved.

Deployment method of software middleware of multi-tenant data centre

The invention provides a virtual streaming cluster cooperative migration method based on a DCN, comprising: first, building a flow communication topological graph among virtual streaming servers; performing small cluster topological division specific to physical machines and large cluster topological division specific to partitions according to the flow communication topological graph among virtual streaming servers; designating the corresponding relation between a partition large cluster and a partition, and the corresponding relation between a physical machine small cluster and a physical machine according to positions where the virtual streaming servers are located and two level topological division results; and finally, migrating all virtual machines to be migrated to target physical machines through a virtual streaming cluster cooperative migration method.

Virtual streaming cluster cooperative migration method based on DCN

The invention discloses a cross-domain mapping method for a virtual data center. The virtual data center is mapped to multiple distributed data centers in a bottom layer, the total mapping cost is minimized, and the energy consumption is saved. In order to adapt to the mapping flexibility of the VDC (Virtual Data Center), a simple and general solution is remapping the VDC from start, dynamic VDC mapping is mapping newly increased virtual resources to physical infrastructure of the bottom layer, physical resources are allocated to newly increased virtual nodes or virtual links, moreover, the reduced virtual resources are deleted from the physical infrastructure, and the occupied physical resources are released.

Cross-domain mapping method for virtual data center

The invention provides a method for reliability perceptive cross-domain mapping of a virtual data center, which belongs to the technical field of cross-domain mapping of the virtual data center. The cross-domain mapping of the VDC (Virtual Data Center) is implemented through dividing levels of a server, grouping virtual machines, mapping working virtual machines in the groups and computing reliability of a current scheme. The mapping method provided by the invention does not utilize excessive resources as backups to guarantee reliability, but the conventional over-supply strategy utilizes more resources than the method provided by the invention. In comparison with the prior art, through the method, the reliability of the VDC is improved, the lower bandwidth cost is implemented, and the blocking rate of the VDC is reduced.

Method for reliability perceptive cross-domain mapping of virtual data center

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Method for reliability perceptive cross-domain mapping of virtual data center