It sounds like a loading noise, you know when it reads.
Like a eee eee eee noise.
All HDD's these days should be silent. Only loud and clicky ones are from a decade ago.
Ok I be more specific. It doesn't make any noise on idle, only when I'm loading something or making the hard-drive in use abit. It sounds like a beepy loading noise. Like a scanning noise. If you know what I mean. Only makes the noise when it loads something or finding something etc.... other than that, it's quiet.