Odd La Cie External Hard Drive Sound

Hi everyone.

I got a load of Apple stuff ranging from 1985-1996 yesterday and included was an external LaCie hard drive.

I plugged her in and noticed a really, really odd sound. I've never heard of HDD make a sound like this before, and couldn't find a similar sound on all of the "hard drive failure sounds" websites.

The hard drive itself is an IBM DORS-32160 from 1996. Below is a link to a youtube video with the hard drive producing the odd sound. I believe it repeats 3 times before I stop recording.

youtube.com/watch?v=Plbo5SJl5Go

You will need to turn your speakers up.

I assume its means the HDD is toast, but does anyone have any idea what this means? Like, what the problem is or if you have heard it before?

Thanks a bunch.