The paging file of Windows, called pagefile.sys, is used to offload the RAM to the hard disk and other disks!
If the available random access memory or random access memory (RAM) on the Windows PC is no longer sufficient to allow the Windows to continue operating normally, All Windows uses in this case the hard disk space.
So, Windows simulates the needed memory in the Pagefile.sys.
The memory simulated in the paging file is also often called as virtual memory. In Linux, this file is called a swap file.
After installing Windows, this virtual memory, which is in the paging file, is allocated 1 to 2 times larger than the actual random access memory (RAM).
To optimize virtual memory, you can spread the space between drives, but it will only work if it is a separate physical drive. It is even better if it is an SSD drive. Because slower drives do not help to optimize the virtual memory, even slow it down!
So, a distribution on many physical and fast hard drives leads to success!
You should also avoid using multiple swap files in different partitions on the same physical drive, which will result in parallel access and this will have a negative effect.