Summary: We have been using this unit for about a year now. We configured 2x 2TB WD20EARS hard drives in it and configure it as RAID 1 (mirror) so keep a backup of all our digital photos, music and movies. The first improvement over the unit we were using before was the improved access speed. We have it installed on out home network that we upgraded to a 1Gbps using Netgear Gigabit switches and CAT6 cable. Now we can access the content from any computer in the house very quickly.
Summary: Product works as described. You can use it as a "cloud" storage device and access all your information from the web. You can use it as a "NAS" storage device and access at high speed across your network. You can use it as a RAID in mirror or RAID w/o mirroring. Works reliably although a-bit complicated to set up.