If you manage a website, having a backup is something rather vital, specifically if you have important information or you have invested cash and time in developing the website. There are different situations why you may need a backup - if you update a script and something goes completely wrong, if you eliminate a file or a whole folder by mistake, etc. 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 computer system from time to time, but because you cannot do that after each and every change, you'll have to rely on the backups which your host company generates. Since this is something extremely crucial, you have to make certain that they keep up-to-date backups, given that a backup generated once every one or two weeks won't do any good in case you run an Internet site like an online store or an accommodation booking website.