This is a Synology DS214 NAS device.  This included two 3TB WD RED NAS drives.  This unit features 1gbit network connectivity as well as USB ports to add additional storage or make add a USB wifi adapter or printer to share.  I have upgraded to a larger unit (Synology Rackstation) and need to get rid of some devices to consolidate.  

Both 3TB WD RED NAS drives show zero bad sectors, and write performance in RAID1 was wire speed at 80-95MBps.  

I will offer a 30-day no-DOA warranty, as well as free shipping!