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2020
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04
Virtual Desktop Technology Architecture
The advantages of VDI (Virtual Desktop Infrastructure) virtualization lie in the fact that computing is centralized on the server side, making it particularly suitable for the following two environments: 1. In environments with very low wide area network bandwidth, such as lines below 500 Kbps, VDI products like VMware can be deployed, allowing users to access their desktop environments using tablets or smartphones, enabling work anytime and anywhere; 2. In newly established full gigabit network environments, where business applications are relatively simple, users can deploy VDI virtualization and purchase cloud terminals for around 100 yuan as clients, significantly reducing hardware investment for client machines.
The advantage of VDI desktop virtualization lies in the centralization of computing on the server side, making it particularly suitable for the following two environments: 1. In environments with very low wide area network bandwidth, such as lines below 500Kbs, VDI products like VMware can be deployed, allowing users to access their desktop environment using tablets or smartphones, enabling work anytime and anywhere; 2. In newly established full gigabit network environments, where business applications are relatively simple, users can deploy VDI desktop virtualization and purchase cloud terminals for around 100 yuan as clients, significantly reducing hardware investment in clients and leveling the hardware investment on the server, making the total investment more reasonable.
VDI Virtual Desktop Infrastructure (Virtual Desktop Infrastructure, abbreviated as VDI) is a new model that many organizations are currently evaluating. It has gradually evolved from the early RDP protocol and thin clients, and is a model that foreign virtualization manufacturers like VMware have long promoted. VDI aims to provide excellent responsiveness and customized user experience for intelligent distributed computing, and offers management and security advantages through a server-based model. It allows for centralized management of the entire desktop image, but this model also has its inherent issues. The main issues are: due to its use of hardware emulation and thin protocols, video, Adobe Flash, IP voice (VoIP), and other compute or graphics-intensive applications are not suitable for this model, and VDI requires a persistent network connection, making it unsuitable for scenarios that require offline mobility. Additionally, its server-based model has extremely high requirements for server configuration, and these issues cannot help but make many users reconsider the practical significance and cost of deploying VDI. From a practical application perspective, the VDI model still has many problems that need to be solved, and related virtualization desktops, such as remote hosted desktops, remote virtual applications, remote hosted dedicated virtual desktops, local virtual applications, and local virtual operating systems, also have various issues; furthermore, there are issues related to terminal hardware support, excessive reliance on network and server hardware, and data security issues. VOI Virtual Operating System Infrastructure (Virtual OS Infrastructure, abbreviated as VOI) has become a new direction for desktop virtualization development. In China, Hexin was the first to launch a virtual terminal management system based on the VOI desktop virtualization architecture. VOI desktop virtualization technology not only enables on-demand delivery of server-based remote virtual OS, APPS, and UserProfiles, but also allows for local caching of OS, APP, and UserProfiles on the client side. This not only utilizes local terminal resources to handle compute and graphics-intensive applications, such as audio and video, large design, and industrial software, but also supports various computer peripherals to adapt to complex application environments and future application expansions. At the same time, the dependence on networks and servers will be greatly reduced; even if the network is interrupted or the server crashes, the terminal can continue to be used, data can be centrally stored in the cloud, and local encrypted storage can be achieved on the terminal, ensuring that terminal application data will not be lost due to network or server failures.
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