Over the past couple of years, online backup services have become more and more attractive, as pricing has dropped to levels ordinary people can afford, and as broadband Internet connections have become both faster and more common. One of the early entrants into the affordable online backup category was Mozy, which offered secure online storage of unlimited data from a single computer (Mac or Windows) for $4.95 per month. Mozy was later acquired by EMC, and its personal backup service was renamed MozyHome. Now, the company's MozyPro service, aimed at businesses and previously available only for Windows, has been released for Mac OS X. The service is referred to as a "beta," but that designation seems to be used in roughly the way Google often uses it; MozyPro is clearly finished enough to go on sale with full support.

Like MozyHome, MozyPro offers encrypted online backups and restoration, complete with archives of every version of files backed up within the last 30 days. This business-oriented version, however, offers several additional features:

• It can back up files on mounted network volumes (whereas MozyHome can back up files only on local volumes).
• It can run on Mac OS X Server, backing up server applications including iCal Server, Mail Services, and Directory.
• It includes an Admin Console, a Web page where an administrator can manage the backup and restoration of files on all the business's computers (both Mac and Windows).
• Phone support is available 24 hours a day.

Licenses for MozyPro are $3.95 per computer or $6.95 per server. In addition, data storage costs $0.50 per gigabyte per month - unlike MozyHome, no flat-fee, unlimited data storage option is available.