When obtaining a VPS you have the possibility to create snapshots. This gives you the ability to create a full image of the data on your VPS. This image can be used to restore a previous state of your VPS whenever you want. Snapshots are not backups of individual files so they can only be restored as a whole.
Snapshots can be made in the control panel via 'BladeVPS' -> 'Snapshots'. By default one free snapshot is included with all packages from the PureSSD X4 and onward. To obtain more snapshots you can order additional ones by going to Addons in your control panel and selecting Snapshots.