Not sure what you're using for backup purposes, but every modern backup tool that I know of including the aforementioned imaging utilities don't copy the pagefile when doing a backup. If you're using imaging software like True Image or Ghost they don't image the pagefile either they effectively skip over that file when imaging, and the hibernate.fil is skipped also). Most backup software won't back up the pagefile.sys file - they're smart enough to know that's not something you want in a backup file anyway.
