Hello, On Wed, 10 Feb 2016 16:27:47 +0000 (UTC) Darren <darren...@yahoo.com> wrote:
> 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. So, you're using USB, not the SATA port? > dd if=/dev/zero of=/usr/testfile > dd if=/usr/testfile of=/dev/null try a larger block size, otherwise you're reading/writing in 512 byte snippets. > 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. Most 7200rpm drives will get hot just spinning. The motor that moves the heads isn't adding much. That said, I usually don't get more than 16MB/s over USB just reading like this: dd if=/dev/rwd0a of=/dev/null bs=1m count=256 Through the Cubietruck's SATA controller I get about 80MB/s out of an old laptop drive. have fun Michael