dorough 0 Posted November 18, 2014 I have a new 4CH Tiny NVR (Dahua) that was bought without a hard drive since I have some new drives on my shelf. After installing, the NVR doesn't recognize the drive. It's a Seagate ST4000DM000. Called the reseller & they said this drive is not compatible but gave no reason. Wondering if it's just an RPM speed? This is 5,600 and the NVR manual says to use 7,200. Would the NVR reject it simply because of that? What kind of drive should I be looking for? Share this post Link to post Share on other sites