A couple of months ago, we reported on Windows Live Skydrive, a free online backup service that lets you back up about 25 GB of data online. Now here is something more efficient that it. It’s the Norton Online Backup 2.0.

Norton Online Backup is a web service managed by the Symantec Corporation that lets you back up your computer’s data online in an interesting way.

Once you subscribe to an annual plan for data backup, you are allowed to back up upto five computers of your household onto the Norton’s data backup servers.

This is pretty impressive particularly if you consider how most of the online backup services confine a user to one computer, or two, in some cases.

The Norton Online Data Backup is an incredibly feature-rich web service that manages your data backup tasks with ease. Something that’s noticeable is that the latest version of Norton Online Backup allow 90-file versioning.

This means that once you’ve backed up a set of data and inevitably made undesirable changes to it, you can retrieve the earlier version of the files, and the time limit is 90 days, that’s about 3 months of time for your convenience.

The Norton Data Backup service users can also email any “backed-up file via download links sent through the redesigned web dashboard”. There is a feature called Advanced search which lets you hover or search over the desired data by file names, size and/or type of file.

The Norton Online Backup 2.0 comes with new features like cross-platform functionality for Windows and Mac computers, support for Intel-based Macs and a more intuitive redesign of the user interface.

Besides this, users can also store the file that’s currently being worked upon. That’s something what they call Open File Backup service and this is most useful when working with open emails.

The Norton Online Backup 2.0 is designed to be user friendly, intuitive and also performs automatic initial setup of the service once you are into it.

Unlike Windows Live Skydrive, Norton Online Backup doesn’t come free, at least not to the new users. However, existing users should be able to update to the version 2.0 as soon as it’s made available.

If you are interested in this online file backup service, you may try out the trial version for a period of 30 days.  If that’s impressive enough, the full version will cost you $50 for 25GB of storage space and allows up to five computers per account.

Norton Online Backup has a 30-day trial version and the full version(click to buy) costs $50 for one year, which gives you 25GB of storage and allows up to five computers on your account.

Click here to read for instructions on (re)installing the Norton Online Backup software or click here for more details about the product.