The difference between host machine and target machine

The host is a computer running a hypervisor that manages virtual machines, while the target machine is a virtualized environment created and run on the host and has its own operating system. The main differences include hardware foundation, operating system, resource allocation, management and isolation. The host consolidates resources and provides flexibility, but may have performance overhead; the target provides isolation and security, but is limited by hardware and management complexity.

The difference between the host machine and the target machine

Definition

• Host: A physical server or computer running a hypervisor that is responsible for managing virtual machines.
• Target machine: The virtualization environment created and run on the host machine is essentially an independent operating system.

Main differences

1. Hardware foundation

• The host has physical hardware resources, such as CPU, memory and hard drive.
• The target machine shares the hardware resources provided by the host machine.

2. Operating system

• The host runs a virtual machine hypervisor, which is a lightweight operating system responsible for managing virtual machines. machine.
• The target machine runs its own complete operating system, just like on a physical computer.

3. Resource allocation

• The host allocates hardware resources to the target machine, including CPU time, memory and storage.
• The target machine can be allocated resources customized by the user.

4. Management

• The host is controlled and managed by the hypervisor.
• The target machine can be managed through the host machine or directly through its own operating system.

5. Isolation

• Target machines are isolated from each other, which means that changes on one target machine will not affect other target machines or host machines.
• The host machine is responsible for coordinating and isolating all target machines.

Advantages and Disadvantages

Host advantages:

• Resource integration
• Improve server utilization
• Flexibility and scalability

Host disadvantages:

• Possible performance overhead
• Hardware dependency

Target machine advantages:

• Isolation and security
• Operating system independence
• Portability

Target machine disadvantages:

• Resource limitations
• Management complexity

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