Power usage of fans?

[keja]

Hello clever people at the LTT forum,

 

Im more a software kinda guy, so this might be a stupid question.

 

I want to replace the HDD Fan mounted in my Chieftec SNT-2131

 

the current fan are a Young Lin DFC802012H Server - Square Fan (DC 12V 2.8W)

and i was thinking to replace it with a Noctua NF-R8 REDUX 1200 (DC 12V 0,42W) to reduce noise

 

im not sure if that will work, due to the low W on the new fan, do i need to but some resistors between the fan and the board, or no need to worry ?

or can you maybe recommend another low noise fan thats a better for the job ?

[FloRolf]

Nope, you are fine. Noctua Fans are also the best out there so why recommend anything else. 

[m0k]

the fans will work just fine without anything additional

just make sure the fan header isnt proprietary and uses a standard 3pin or 4pin 

[keja]

Thanks guys, just added/borrowed a picture from google, as you can see its a normal 3pin  

[mariushm]

Note that the fan seems to be 20mm thick - most 80mm (and other common sizes) fans are 25 mm thick. Make sure you can use 25mm fans on your thing.

 

You don't have to worry about the power, the fans will take as much as needed.

 

What you would normally concern yourself about is the type of fan you use and if it's a fan optimized for static pressure (to push air through radiator fins) or if it's fan optimized for air flow (the kind you put on the back of your case to move air around)

 

It seems to me you need fans optimized more for air pressure since the fan has to push or suck air through whatever free space is around the hard drives and that circuit board, so be careful. Check the label of the current fan, maybe try to determine the parameters using that fan code and try to match those.

 

Your fan seems to be 80x80x20mm , 37 CFM (cubic feet per minute) , up to 3500 rpm , up to 34dbA noise .. can't find the datasheet for 20mm thick, only 25mm thick fans, and those are different enough to not be useful.

[keja]

Ill make it fit im not too worried about the airflow, its in my nas and the disks are only 5400rpm plus its mostly for backup / clod storage, so ill think it will be fine, i was just worried about the fan's dying, or the buzzer going off as it might think the fan are broken.