I got a brand new Toshiba 4tb 7200rpm internal hard drive on amazon. The hard drive made a semi loud grinding sound whenever I downloaded something on it. I looked it up and a lot of websites said that it was normal, others said that my hard drive was dying. I asked my friends and they said that I should have it replaced, which I did. My new Toshiba 4tb 7200rpm hard drive which I got as a replacement is making the same sound, but it's a little less extreme and occurs every few seconds. when downloading large downloads that last 2 hours or so the grinding sound increases. The grinding sound then resumes to what it originally was once the download is finished and I'm downloading something new. What should I do? should I return this hard drive and also just refrain from buying them online?