It's A Digital Disease!

The original post: /r/datahoarder by /u/AlternativeNo1389 on 2025-03-28 08:12:19.

Hi, there is some interesting fast ticking HDD (I am using 2x WD Ultrastar HC520, 12TB) noise in Synology DS224+, and it is not a fan, even tho the fan make annoying noises on its own.

Here is archived post with the same exact problem, but no solutions.

And Here I made clear audio recording of the WD HC520, (Google drive link) where you can hear the HDD noise (as well as background fan noise)

Does anybody know, if this is normal noise for this kind of drive? Never heard of it, different drive made just normal seeking noises and the PWL noises.

S.M.A.R.T. tests are all good for both drives, also did the Synology extended test.

I appreciate any information. Thanks!