Research And Implementation Of Cloud Data Center In Secondary Vocational And Technical Schools

With the development of digital campus in secondary vocational and technical schools,traditional data centers cannot meet the needs of teaching routine,office work and daily life,mainly shown in following factors: high operating costs,inequal distribution of resources,low resource utilization,reliability,stability and poor scalability,all of which make "information island" phenomenon."The development of educational information ten years(2011-2020)" and "vocational school digital campus construction norms" by Ministry of Education pointed out that the data center is an important infrastructure for a vocational school digital campus.The goal is to build safe,efficient,highly available data center systems,data center construction can take virtualization technology into consideration.Virtualization technology has been welcomed by all walks of life since the birth,which brought change for IT infrastructure.Therefore,it has important practical significance to build a new cloud data center by the introduction of virtual technology to promote the development of digital campus in vocational schools.Unlike universities and enterprises,due to funding,technology and scale constraints,in secondary vocational and technical schools,the construction of cloud data center pursues not only high-performance,large-scale and one-step,but also unified and systematic planning according to their own features.In the secondary vocational and technical school cloud data center system,the load of each business system is various,the physical host performance and structure are different.Therefore,the problem of load imbalance caused by high concurrent access and heterogeneous physical host in cloud environment is the key to improve the throughput and stability of cloud data center.The main contents of the paper are as follows:1.It analyzes the current situation of the traditional data center of the secondary vocational and technical schools,classifies the demand of the cloud data center of the secondary vocational and technical schools,and provides the theoretical basis for the establishment of the cloud data center of the secondary vocational and technical schools.2.With further study of cloud computing related knowledge,analysis of popular virtualization and storage technology,it proposes the choice of VMware vSphere as a secondary vocational school cloud data center infrastructure and shared storage platform.Besides,it proposes the choice of Openfiler as a backup storage platform.3.With further analysis of LVS four forwarding modes and four commonly used scheduling algorithms,it points out the lack of weighted polling scheduling algorithm in cloud environment,and proposes an improved weighted polling scheduling algorithm for cloud environment.4.The rationality and validity of the improved weighted scheduling algorithm in the functional modules of the cloud data center and the cloud environment are verified by computer experiment.