Virtual Server and Physical Machine are two different types of computer systems. They have significant differences in architecture, performance, resource utilization, management, and application scenarios.

　　1. Architecture:

　　Physics: Physical machines refer to a practical, independent hardware server, including processors, memory, hard disks, network interfaces and other components. It runs on physical hardware and interacts directly with hardware resources.

　　Virtual server: Virtual server is multiple logical instances created by virtualization technology on the physical server. Each instance is called a virtual machine (VM). Virtual server sharing the hardware resources of the physical server, but isolate through the virtualized layer.

　　2. Performance:

　　Physical machines: Due to the exclusive hardware resources of physical machines, they usually have higher performance. The performance of physical machines is limited to the physical capacity of hardware, but it can make full use of these resources.

　　Virtual server: Although the virtual server can provide sufficient performance, there may be performance losses due to shared physical resources. This is particularly obvious in the task of dense computing or a large amount of memory and processor resources.

　　3. Resource utilization:

　　Physical machines: The resource utilization of physical machines is direct, and a physical machine can only run an operating system and application. When the resources of the physical machine are not fully utilized, some hardware resources may be wasted.

　　Virtual server: Virtual server can use hardware resources more effectively, because multiple virtual machines can run on the same physical server to share hardware resources. This helps to use the server's computing power more fully.

　　4. Management:

　　Physical machines: Manageing physical machines usually require direct physical access or remote management tools. System administrators need to handle tasks such as hardware maintenance and operating system upgrade.

　　Virtual server: The management of virtual servers is more flexible, and remote management can be performed through the virtualization platform. The creation, start, stop, migration and other operations of virtual machines can be easily completed through virtualized management tools.

　　5. Applicable scenarios:

　　Physical machines: It is suitable for the need to maximize performance, high demand for hardware resources, and direct control of physical servers.

　　Virtual server: It is suitable for scenarios with high resource sharing, improvement of hardware utilization, and high flexibility requirements, such as cloud computing, testing and development environment, and server integration.

　　Virtual servers and physical machines have their own advantages. Choosing depends on specific business needs and resource utilization. In modern data centers and cloud computing environments, virtualization technology has been widely used to improve the utilization and flexibility of hardware resources.