Seagate NAS 2-Bay 2TB Network Attached Storage Drive (STCT2000100)
While there are a somewhat limited number of budget NAS models that include storage with them, this is one of the best ones out there. The 2TB model is the best overall value, but you might also consider either the 4TB model also available, since it does not cost much more for quite a lot more storage space. This budget NAS has two bays, one of which is taken up by a 2TB hard drive, with support for a maximum of 10TB of total data storage. It has 512MB of DDR3 memory and a 1.2GHz processor, which helps it run fast and keep your data accessible. You get a lot of connectivity with this one, which has two USB 3.0 ports, as well as two Ethernet ports.