If you run a website, having a backup is something extremely important, specifically if you have important info or you have invested cash and time in developing the site. There are different situations why you may need a backup - if you update a script and something goes wrong, if you eliminate a file or a whole folder by accident, and so forth. Having regular backups will help you avoid any loss of information or at least minimize the damage, which is still better than losing the entire site. You'll be able to download a copy of your content on your PC from time to time, but because you cannot do that after every single change, you need to rely on the backups your web hosting provider generates. Because this is something rather crucial, you must make certain that they keep up-to-date backups, given that a backup created once every one or two weeks might not do any good when you run an Internet site such as an online store or an accommodation booking site.