Tested this harddrive on more than one system, it is good. Just for fun I tested another drive with a usb port with the same results. I am getting transfer speeds of approximately 20mb/s using dd.
dd if=/dev/zero of=/usr/testfile dd if=/usr/testfile of=/dev/null NetBSD armv7 7.99.26 NetBSD 7.99.26 (CUBIETRUCK) #1: Wed Feb 10 16:03:52 UTC 2016 root@netbsd.192.168.1.1:/usr/obj/sys/arch/evbarm/compile/CUBIETRUCK evbarm This is the drive HGST Deskstar NAS H3IKNAS30003272SN (0S03660) 3TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" High-Performance Hard Drive for Desktop NAS Systems Bare Drive It is running very hot while presumably not doing anything. I also tested with Seagate Backup Plus Slim Portable Drive 2TB Any insight welcome!
