Fewer excuses for not doing a PC backup

Online backups, where files are shuttled off to the Internet for safekeeping, are suddenly becoming effortless, capacious and even free.

If there's one New Year's resolution even more likely to fail than "I vow to lose weight," it's "I vow to start backing up my computer."

After all, setting up and remembering to use a backup system is a huge hassle. The odds are good that you don't have an up-to-date backup at this very moment.

Fortunately, 2007 may turn out to be the Year of the Backup. Both Microsoft and Apple have built automated backup software into the latest versions of their operating systems, both to be introduced this year.

At the same time, an option that was once complex, limited and expensive is suddenly becoming effortless, capacious and even free: online backups, where files are shuttled off to the Internet for safekeeping.

means never having to buy or manage backup disks. You can have access to your files from any computer anywhere. And above all, your files are safe even if disaster should befall your office--like fire, flood, burglary or marauding children.

As it turns out, the Web is brimming with backup services. Most of them, however, offer only 1GB or 2GB worth of free storage.

That may be plenty if all you keep on your PC are recipes and a few letters to the editor. But if you have even a fledgling photo or music collection, 2 gigs is peanuts. You can pay for more storage, of course, but the prices have been outrageous; at Data Deposit Box, for example, backing up 50GB of data will cost you $1,200 a year.

Nobody offers unlimited free storage, but lately, they've gotten a lot closer. Two companies, Xdrive and MediaMax, offer as much as 25GB of free backups; two others, Mozy and Carbonite, offer unlimited storage for less than $55 a year.

(Note that this roundup doesn't include Web sites that are exclusively dedicated to sharing photos or videos, like Flickr and MediaFire. It also omits the services intended for sending huge files to other people, like YouSendIt and SendThisFile; such sites delete your files after a couple of weeks--not a great feature in a backup system.)

Xdrive
This service, owned by AOL, offers 5GB of free storage. It's polished, easy to use, and as fully fledged as they come. Right on the Web site, you can back up entire lists of folders at a time, a method that works on Macintosh, Windows or Unix.

If you use Windows, however, an even better backup system awaits. You can download Xdrive Desktop, a full-blown, unattended backup program. It quietly backs up your computer on a schedule that you specify, without any additional thought or input from you.

Better yet, a new disk icon appears on your PC (labeled X), that represents your files on the Web. You can open and use its contents as though it's an ordinary, if slowish, hard drive. A Mac version of Xdrive Desktop is in the works.

As a bonus, you can share certain backed-up folders, so that other people can have access to them from their Macs or PCs. (This requires, however, that they sign up for their own free .) You can view your backed-up photos as an online slideshow, or organize and play your backed-up music files on the Web page.

Upgrading your storage to 50GB costs $100 a year, which isn't such a good deal. But if your Documents folder fits in 5GB, then congratulations; you've got yourself a free, effortless, automatic backup system. Happy New Year.

Carbonite
This one's as pure a backup play as you'll find; there's no folder sharing, photo viewing or music organizing. The Windows-only backup software is completely automatic and stays entirely out of your way, quietly backing up whenever you're not working. You get no free storage--the service costs $50 a year--but you do get something else few others offer: an unlimited amount of backup storage.

Carbonite is aimed at nontechnical audiences. It's sold in computer and office-supply stores, for example, and it's the easiest online backup software to use--in fact, to not use, since it's completely automatic. The only change you'll see are small colored dots on files and folders that have been backed up--and a Carbonite disk icon in your My Computer window that "contains" all the backed-up folders and files.

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