WD My Book Due 16Tb LED Won't Stop

Spec: WD My Book Due 16Tb, it is set to raid 1 (mirroring); not connected with any other USB drives
My machine: Mac Mini 2012 Server

I brought the WD for about a week, and it never stop the “breathing” rhythm even my computer is asleep; the LED will only stay still when my system is booting up (it means for about 5 seconds). All the rest of the time it is non-stop (which indicates there is data going in and out, which i have not done anything on my computer.)

And I have excluded Time Machine from backing up this drive.

Hi shoppingkai,

It’s best to identify the background services which are accessing the My book.

You can contact WD’s Technical Support about this for live assistance and troubleshooting

To Contact WD for Technical Support

http://support.wdc.com/support/case.aspx?lang=en

The link below will allow you to call support

Create a Support Case
Create a support case with our world-class service and support team.