I had a pre-Used SAN (fully stacked with Disks). Every once in a while the drinking glasses in the kitchen started to clink, until i found out they did that wh

I had a pre-Used SAN (fully stacked with Disks). Every once in a while the drinking glasses in the kitchen started to clink, until i found out they did that when scrubbing on the SAN was running (complete different room), not directly from the start, but the vibration amplified and after some minutes the ground/wall vibrated.