The purpose of the backup software is simply to keep an image of your system disk so you can quickly recover from a situation where there is a major failure. Typical situations would be:
- the system disk fails;
- there is a nasty virus infection that can't be cured;
- your operating system gets corrupted and can't be fixed.
You can use software such as Clonezilla or Macrium Reflect to generate an image of your disk that you can use to recreate your system disk/partition. Note that Windows 8 does include provisions for "Refreshing" your PC (look under Settings/PC Settings). In theory, this can fix most software related OS problems.
There is also "File Backup" functionality. I got around to trying this and it seems to work OK. This feature will periodically back up the contents of your libraries, such as the files in your Documents folder (you can also link other folders, even if they are on other drives).
Of course, no matter what you do, it is important to have a separate drive to use as the backup location - you don't want to fill your SSD and you don't want to lose everything if the SSD fails.
My suggestion is that you need to decide on the nature and extent of the backup protection you need.
- If you are mainly using your computer for surfing and playing games, you might get by with little or none. If worst comes to worst, you just reinstall (makes sure you keep your software CDs and keys!).
- If you have documents or media that you cannot easily replace, you definitely need to back it up on one or more of another hard disk, writable DVDs, or memory sticks. The File Backup functionality would be adequate for this.
- If you need to guarantee availability of your computer since you need it for work and can't afford to spend a day or more reconstructing your system software configuration, then you need disk imaging software such as Clonezilla or Macrium Reflect. The latter is very easy to use - you install it as a windows application, run it and select what partitions are to be imaged and where you want to store the images. If your system disk dies, you can boot with a recovery CD (the software will offer to burn this for you) and recreate it using the image.
You can find out more about these programs if you do a Google search.