If you run an Internet site, having a backup is something really vital, especially if you have important information or you have invested time and cash in building the website. There are different scenarios why you could need a backup - if you update a script and something goes wrong, if you erase a file or a whole folder accidentally, 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 may download a copy of your content on your PC occasionally, but because you can't do that after every single change, you'll have to rely on the backups that your web hosting provider generates. As that is something rather important, you need to make certain that they keep up-to-date backups, because a backup performed 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 reservation portal.