I just bought a WD Blue 6TB HDD
So far everything operation wise (read and write), the HDD has been pretty silent which is satisfactory.
The only thing that stood out to me was whenever I unpower the HDD (shutdown, sleep or HDD going idle), there is a squeak noise (not very loud) which I have not heard from my other WD HDDs. Usually my older WD HDDs produce a click noise when it is getting unpowered.
Here’s a clip of the squeak noise (the computer case was closed in this recording): https://clyp.it/iuckqcsi
Diagnostics shows everything as satisfactory. I have seen a reddit thread with maybe the same issue (noise sound link doesnt work for me to compare): https://www.reddit.com/r/DataHoarder/comments/bhy4ef/strange_spindown_noise_with_new_6tb_wd_blue/
Is this squeak noise a normal sound with this HDD? Please let me know if you need more information.