replace fans in RS819

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replace fans in RS819

50
17
NAS
RS819
I am thinking to replace the fan of the RS819 by noctua fans to make it more silent. Is the NF A4x20 FLX ok? Or should I take the 5v modele? Does it worth the change?
 

jeyare

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I like Noctua fans, I have them everywhere.
as I remember for some my recommendations for the single U cases from Synology, you need really heavy airflow, then silent fans. up to your common environment operation temperature.
But Noctua can do it in both way.
 
50
17
NAS
RS819
I like Noctua fans, I have them everywhere.
as I remember for some my recommendations for the single U cases from Synology, you need really heavy airflow, then silent fans. up to your common environment operation temperature.
But Noctua can do it in both way.
yeah i may try it i am wondering if it will really help to reduce the noise...
 

jeyare

Subscriber
1,587
537
the noise is your friend in single U case :) , it's really tiny place for airflow inside, specially in room without air-condition
 
50
17
NAS
RS819
yeah but my faster supermicro is far less noisy. these are really the fans, the hds are pretty silent. i sometimes wonder if i shouln't just by a shelve and a new nas...
 
2
0
NAS
RS819
Operating system
  1. macOS
  2. Windows
Mobile operating system
  1. iOS
I tried to replace all 3 fans with the Noctua mentioned and fan 3 would stop after running for a few minutes. So don't waste your time. Fan 1 and 2 worked fine, but 3 would not. Must be a non-standard pin assignment, though visibly the colors matched and only fan 3 would stop. Weird.
 

jeyare

Subscriber
1,587
537
what exact product number of the Noctua fan?

in 40x40x20cm size of fans Noctua has two kind of electric specifications 5V and 12V. Three wires (one for a rpm regulator)
but
original fans in RS819 has been manufactured by Sunon with part no MB40201V2-0000-A99 = 12V/50mA, two wires red(+), black(-)

for such hobby, as is tuning of computers is highly recommended usage of multimeter and be pretty sure, what are you doing. Just to be sure. So don’t waste your time and read before this replacement FAN product specifications. Because you will find, that the Sunon has >30% more airflow capacity than the same Noctua, finally no variable rpm. OFC Noctua is more silent (but in this case with low airflow).
 
2
0
NAS
RS819
Operating system
  1. macOS
  2. Windows
Mobile operating system
  1. iOS
The original fans in my unit are 3 wire: yellow, red, black. they are Sunon, not sure of model. The Noctua were NF-A4X20 FLX. All is good, just posting for a couple of folks who said they would try the swap with the model I used.
 

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