When I first started examining the DS408 I was impressed with the number of features it offered. For data storage it offers a RAID 0/1/5/6 which makes it ideal for both home and small office and workgroup environments. You can mount up to four hard drives for a maximum of 6TB of storage. The DS408 also offers volume expansion support where you can add additional drives to an existing RAID 5 array as well as the ability to replace existing drives with larger disks without losing data. The unit also offers an impressive list of multimedia functions for serving and sharing video and music files. Integrating all of these features can sometimes result in a patchwork of seemingly unrelated applications, but the DS408 avoids this with its Disk Station Manager user interface.