In general, in traditional laboratories, when the experimental machines and some operable equipment are limited, students can only go to the experimental courses separately, and can't use some of the students' spare time to complete teaching and practical operations, which will have a certain impact on students' experiment conclusion. In addition, if the equipment and model in some laboratories are different, the failure rate will also increase accordingly, which will spend a lot of time and energy on repairing the equipment, which will lead to many network security vulnerabilities, easy to give malicious viruses the opportunity to invade, so that the campus network security can not be guaranteed.
The dual system working mode of "primary" and "local operating system startup and operation as auxiliary" is a way of virtual cloud desktop design to start and run a networked virtual system. For the construction of a unified management platform, the use of a unified application server virtual resource pool, storage resource pool, unified installation of network anti-virus software to prevent virus intrusion, and efficient installation and maintenance of system software are the greatest guarantee for experimental teaching.
The construction and application of the virtual cloud desktop provide a safe, efficient and shared service guarantee for the experimental teaching of the college and the whole school students. The virtual cloud desktop "expands" the experimental teaching site in the form of a network virtual experimental teaching room, eliminating the space and facility restrictions in the practical teaching link. Students can complete experiments anytime and anywhere, enhancing students' practical ability, and better promoting the teaching reform of combining theory with practice. The laboratory management is also more convenient and efficient, improving the maintenance efficiency, and realizing the sharing of experimental equipment and experimental resources
The essence of the virtual cloud desktop architecture is to virtualize the computer desktop and generate a large number of independent desktop operating systems, namely virtual desktop devices, on the virtualized servers in the data center. The security and flexibility of desktop usage can be achieved by sending the private virtual cloud desktop protocol to the terminal. Virtual cloud desktops rely on server virtualization. Students can access their personal desktop systems through the network through any device, anywhere, and at any time to conduct course experiments. Students' fragmented time can be well used, and the workload of the server in the laboratory can also be dispersed. This virtualization technology realizes the requirement of single machine serving multiple users, and improves the utilization rate of equipment.
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