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exactly,
therefore for such scenario, you need an Airflow fan (the Noctua fan) and not a Static pressure fan (the Taiwanese one) = two diff purposes in the setup.
Static pressure of the Noctua is about 2.37 mm H2O vs the Y.S.Tech is about 8.5 (same fan dimensions). The reason why you could feel the “pushing” of the original fan.
Airflow fan with perfect blade geometry and effective bearings has better efficiency in low rpm for the transport of big air masses. The Static pressure fans are useful for keeping their performance when you are using some resistance behind them (a dust filter, a cooling radiator,); the reason why they need more rpm = more pressure = more power consumption. The reason, why you can’t use them in a low rpm environment setup (e.g. defined by the DSM setup).
However, Synology doesn’t use mentioned resistances behind their fans. Then Static pressure isn’t the dominant requirement for the fan.
When it’s not about cost (mentioned above), then just one idea is behind this.
Wrong engineering: sw/hw features vs hw (fan) capabilities. Or they just don’t care. Or I’m wrong.
It’s simple to calculate an air mass value necessary to change per defined time to achieve an optimal airflow in the case; based on defined air obstacles (case parts).
therefore for such scenario, you need an Airflow fan (the Noctua fan) and not a Static pressure fan (the Taiwanese one) = two diff purposes in the setup.
Static pressure of the Noctua is about 2.37 mm H2O vs the Y.S.Tech is about 8.5 (same fan dimensions). The reason why you could feel the “pushing” of the original fan.
Airflow fan with perfect blade geometry and effective bearings has better efficiency in low rpm for the transport of big air masses. The Static pressure fans are useful for keeping their performance when you are using some resistance behind them (a dust filter, a cooling radiator,); the reason why they need more rpm = more pressure = more power consumption. The reason, why you can’t use them in a low rpm environment setup (e.g. defined by the DSM setup).
However, Synology doesn’t use mentioned resistances behind their fans. Then Static pressure isn’t the dominant requirement for the fan.
When it’s not about cost (mentioned above), then just one idea is behind this.
Wrong engineering: sw/hw features vs hw (fan) capabilities. Or they just don’t care. Or I’m wrong.
It’s simple to calculate an air mass value necessary to change per defined time to achieve an optimal airflow in the case; based on defined air obstacles (case parts).
