Question, quick: What is virtual memory? What problems are mainly solved?

Virtual memory is virtual memory, which is a technology of memory management in computer system. In view of many disadvantages of directly mapping physical addresses, virtual design-virtual memory is adopted in computer design. The CPU sends out a virtual address, which is translated into a physical address by MMU, and finally gets the data.

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Precautions:

Host-based virtualization storage technology, which is the virtualization storage technology management software located in the third layer. In practical application, the software is usually implemented by logical volume management software under the operating system.

Such as automatic volume management software under Windows operating system. However, from my experience, it is better to use the volume management software that comes with the operating system. Compatibility and performance are better, which is still good. Through this virtual layer, storage devices can be grouped into logical disks and logical volumes.

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