Problem Description
Computer programming usually used only 250G space, c and d drive tray, ready today to do the experiment and found that deleting the contents of the virtual machine system not only failed to reduce space, but increased when I realized that inside the virtual machine might imagine with our mode of operation is not the same.
Solution
My solution is to remove unnecessary snapshots, snapshot indeed we do experiments to ensure a secure virtual machine cluster, but it also takes up a lot of storage space.