If your host machine is short on storage and you have virtual machines that you seldom use but still want to keep, you may consider archiving them to save space.
To archive a virtual machine, do the following:
Right-click the Parallels Desktop icon in the Dock and choose Control Center.
Right-click a virtual machine and select Archive.
Archived virtual machines cannot be launched. To start an archived virtual machine, you need to unarchive it first. Do the following:
Right-click the Parallels Desktop icon in the Dock and choose Control Center.
Right-click an archived virtual machine and select Start.
In the dialog prompting to unarchive the virtual machine, click Unarchive.