Backing Up a Virtual Machine
Most people don't seriously consider regular backups as a necessity until they have experienced a significant data loss. You should create your own backup strategy to protect yourself from data loss. Virtual machines are vulnerable to crashes as well as physical computers.
You can back up your virtual machine using one or several of the following methods:
Copying the virtual machine files
You can locate your virtual machine in Finder and create a backup copy of the virtual machine file (PVM).
Cloning the virtual machine
You can create a complete clone of the virtual machine using Clone Virtual Machine Assistant. For details, see Cloning a Virtual Machine.
Backing up your virtual machine using Time Machine
If you choose to back up your virtual machine with Time Machine, your virtual machine's PVM file will be automatically backed up together with other files stored in Mac OS. As a consequence, files stored on your virtual machine's hard disk will be also backed up, since the virtual hard disk file (HDD) is stored inside the virtual machine bundle file (PVM).
Warning: Time Machine backups can guarantee safety only if your Parallels virtual machines were stopped or suspended during the backup.
If you want to restore some of your Windows files, do the following:
For more information about Parallels Mounter, refer to Using Parallels Mounter.
Using third-party backup utilities
You can use any third-party backup application you like. Registered users of Parallels Desktop can use Acronis True Image Home for free for backing up their virtual machines. You can download this application from Parallels Download Center.