First, we need to backup our entire hard drive on a regular basis. For most users, doing this once a month should be adequate.If you frequently change your software and settings, then you need to backup your entire system more frequently. If you seldom change these things, then you could put off backing up your entire system to once every 2-3 months. It’s better to backup more frequently than to put it off for many months. A drive failure will certainly catch you off guard if you haven’t backed up your entire system for many months.
I recommend you use Drive Image to backup all of your partitions by creating a condensed image of each partition and storing this image on the other hard drive’s backup partition. Each partition image file contains not only the partition information, but all of the files, settings, and hidden files contained within that partition.
Using this cross backup approach, if one of your hard drives should fail on you, you simply remove the failing drive and place a new drive in its place. Then you use Drive Image to restore all of the partitions and their content from the backup images on the other hard drive.