New Hard Drive beeps once when started

I just bought a new SATA hard drive (the Samsung HN-M101MBB) and connected it to my pc via a external drive reader (the Sharkoon Quickport), when I turned the docking station power on the hard drive beeped once. If I turn the power off and then back on again the hard drive beeps once everytime. I have connected the drive to the inside of my PC and the drive still makes this single beep when the PC starts up.

Is this normal? Why is this happening?

• It is more like a lower pitched 'dun' noise than a high pitched beep, but definitely coming from a speaker in the HDD


• This noise happened the very first time I powered on the drive, so overheating is not an issue.


• I have run the SeaTools' 'Short Drive Self Test' and it passed.

Thanks
Ben