I am doing my first full backup of my two internal hard drives (C and T). Is it best practice to backup these drives separately i.e. create a backup file (with restore point) for each individual drive? Or would you just create one massive backup file for both C and T? I was veering in my thinking to doing two separate backups then if just one drive failed I could restore it individually? Or, if I create one file for both drives, does Norton give you the option of which drive to restore?