Could an HGST Deskstar NAS 4TB 3.5" drive make a very quiet click click click noise.? And is that bad?

[PeterZ640]

I just noticed after say 5 hours running if the pc ramps down to idle, when the fans drop to circa 300rpm I can just hear a very slight underlying noise ... Its very quiet like a click, click, click. As soon as the pc does some work and the fans ramp up, it either goes away or is drowned out.

I am not sure if its a fan playing up and clicking at low revs, or the new hdd
Its hard to isolate this noise, as one has to run the pc for a long time - hours, and then undo each fan in turn, and then the hdd.

I just wondered if this was normal with a 3.5" hdd.
I have another HGST just arrive so will fit that too to compare, but wonder if this noise ( if its the HDD is acceptable) or should it be totally silent.

Note I did have a 2.5" HDD fail on me and that had a very distict CLICK CLICK NOISE . This is much quieter
NB The Deskstar NAS 4TB is 7,200 rpm.

Any advice appreciated

 

[das_stig]

Head adjusting for thermals, normal click now and again if under prolonged use, clicky all the time, start backing up, just in case it dies.

HGST NAS drives are very reliable in general.

 

[PeterZ640]

Head adjusting for thermals, normal click now and again if under prolonged use, clicky all the time, start backing up, just in case it dies.

HGST NAS drives are very reliable in general.

Thanks its got very little on it yet - it may be the fans.

Yes I Will keep it scrupulously backed up. Just in case ... Its a very slow, almost soft click , click ,click. Not the harsh click I heard when the WE drive failed.

I assume there is nothing on a MB that can click? As I did see a status code of 73 on the LED but not sure what that means.
Everything in Device manager says all is working properly. :-0

 

[PeterZ640]

It ran all day yesterday, virtually silent!
By that I had to put my ear on the side of the case to try and hear anything, and then a sort of slight perpetual whoosh of air flowing ?? No clicks at all!