This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter's approach.

The minimum "best practice" backup arrangement for your vital data is to maintain three copies of the data: the original, a local backup, and a second backup offsite. With LaCie's CloudBox NAS device, you simply back up to the ethernet-connected unit, which then automatically backs up to LaCie's own online backup service. But easy as it is, CloudBox is also expensive, capacity-challenged, and slower than average.

CES 2011 has plenty to offer the consumer world, but increasingly it brings major business tech advances, too. This year, we're seeing a flood of new offerings that will make doing business on the road easier, more engaging, and a whole lot more productive. Thanks to a host of new tablets, a flurry of 4G wireless offerings, some cool new networked storage options, and a bunch of itty bitty projectors, this CES is shaping up to be a road warrior's fantasy.

A storage startup called Nasuni is unveiling a virtual NAS file server that runs on VMware and connects customers to cloud platforms such as Amazon's Simple Storage Service, adding encryption to enhance security and several features to improve performance.

Network-attached storage (NAS) can make your business easier to run and more efficient in multiple ways.

In just a few short years, storage virtualization, also known as block virtualization, has proven its worth in the large enterprise and traveled that well-worn path from pricey boutique solution to affordable commodity. As a standard feature in all but the most modest mid-tier storage arrays, storage virtualization soothes a wide range of storage management woes for small and mid-size organizations. At the same time, dedicated solutions from top-tier vendors deliver the greatest ROI to large shops managing large SANs with intense data availability requirements.