I have a new 8TB WD Purple Surveillance HDD ( WDC WD82PURZ-85TEUY0) installed in a UniFi UDM Pro.
At first is was quiet, just the normal clicking etc…
Then it started the whirring/vibration sound as per the below video, louder than the video suggests. It coincided with the light on my device, and I turned off all other devices/fans.
Lasted for around a week, then suddenly stopped again a day ago.
Today I tested the drive with the SHORT SMART TEST, all ok.
The EXTENDED SMART TEST stuck at 10% for an hour, drive getting hot (50C) so I aborted.
Any advice please?
VOLUME UP - the noise is loud enough to be heard 5m away clearly over a TV.