Having read the previous posts, you know that one backup might not be enough. There are many ways to make backup and if you want to be well protected without paying too much, you must make a backup strategy for your situation.
In order to make a backup strategy you must know about different backup technologies, their price, ease of use and how they fails.
Then you must weight the pros and cons of each technology and make sure that the advantages of one technology will cover for the disadvantages of another. One technology might be fast and easy to use, but will not protect against a major disaster. That can be combined with one that takes more of your time, but can be applies less often, because a major disaster does not happen a lot.
Some of the upcoming posting will talk about such technologies, pros and cons.