Mozy,
is a great online backup service. It is one of 2 commercial products that has marketed themselves directly to the consumer and offer an unlimited download plan, as well as some business packages.
It is simple and easy to setup and not only lets you do an online unlimited backup, but it also lets you setup a local backup. It is the most common automatic backup solution that I setup for my clients. Importantly, it encrypts your data, so that it can not be sniffed out in transit.
You can download the Mozy client for Mac or PC at the website, but you need to create an account (and enter in a credit card number) to use it. I think they have some sort of 30 day trial, but I do know they offer a 2 year discount.
The installation is a breeze and takes several minutes. The default configuration should create a backup profile which includes all the files in the Users or Documents and Settings. It does not pickup files that are not in those areas, but you can add directories to the backup profile, by setting it in the options area, however you need to be online to see or change the options.
The length of the first backup can take hours, to days, to several weeks depending on how much data you are backing up and how fast your internet connection’s upload speed is. You can check your upload speed at Speedtest.net Some backup solutions cap file sizes at 4 gigabytes, but Mozy has no size restrictions for there premium home service, however they limit the backup to hard disks stored within your computer (which can be 8 terabytes if you have a MacPro). I am not sure how they can tell, but there obviously has to be a way.
Restoring from Mozy can happen in two ways, you can select the files to restore and then Mozy will email you when they are ready for download and you can either download them or elect to have them sent to you on DVD with costs starting at $29.95, and they can next day mail them to you for an extra fee of course.
Restoring is usually the achilles heal of any backup system, and Mozy does a decent job of making that process more simple than some of the other products that I have used. It is important to test your ability to restore no matter what backup system or method you choose.
Testing this out before you actually need it can save your sanity, because the last thing you want to do is learn that your system is flawed when you actually need a file restored.