While popular among storage-hungry PC enthusiasts, network-attached storage has proven to be particularly useful in office environments, where sharing large amounts of data between several desktop PCs can become quite problematic. Having followed its development for some time, the move to NAS just made sense in my own workplace and today provides a central point to share and store data on a daily basis.With the availability of 2 terabyte hard drives, a majority of users will be satisfied with a 2 or 4-bay NAS solution. However, as data accumulates over time there are those who might require even more than that -- people in the graphic design, photography or video editing business, for example.Performance and feature set are two things you'll definitely want to keep in mind. From our experience in testing a range of devices we can assure you there can be huge differences from one offering to another.