Synology Disk Station 2-Bay Network Attached Storage - DS715
There are a lot of different NAS models available from Synology, but this one in particular is ideal for someone with a home entertainment or small office setup in mind. It has a quad-core 1.4GHz processor and 2GB of DDR3 memory which lets it run fast while giving you great read/write speeds when accessing your data.
This pick comes with two bays but you can connect a separate expansion unit that adds five more if you need additional storage down the road. Each bay supports up to an 8TB hard drive for 16TB of total storage support so just about anything you could need to store and access in your home is available. This NAS has two USB 3.0 ports, an eSATA port that lets you connect additional external storage to the NAS, and two RJ-45 Ethernet ports for all your connectivity needs.