I have Synology DS209 + NAS II. Like most two-bay Synology, his is a fan Evercool whose specifications are described below.
Model: EC7025L12ER (Evercool)
Dimensions: 70mm x 70mm x 25mm
voltage: 12 V
Noise Level: 24 dB
Consumption: 1.68 W
Speed: 3000 rpm
Flow: 25.2 CFM
Lifetime: 40,000 hours
The problem with this is its fan noise. It is not very important, but in a quiet room, I find it embarrassing. So I decided to replace it with a quieter model. Fans in these dimensions are not many, my choice fell on a Nexus fan whose specifications are described below.
Model: SP702512M (Nexus)
Dimensions: 70mm x 70mm x 25mm
voltage: 12 V
Noise Level: 19 dB
Consumption: 3.96 W
Speed: 2400 rpm
Flow: 21.1 CFM
Connector: Molex 3 pin
This fan is fully compatible with the original in size and hardware. However, it consumes a bit more (2.28 W) breaststroke slightly less air and is not compatible at connector (it takes out his soldering iron to put a compatible connector on the fan cable). By cons, it is much quieter my ears and in the thank! I keep warm as the original fan replacement.
As nothing is ever simple in computing, there is a problem: Synology beep regularly probably due to the rotational speed of the fan that is not the same. The solution radical is to type the following command in a shell open on the NAS
DS209xII> echo 0> / sys/module/ds508_synobios/parameters/check_fan
More beep, but probably not more warning in case of fan failure ... As this manipulation is done after each reboot, you can put the command in a script called, for example, S99zz_fan_check_disable.sh in the directory / usr / syno / etc.defaults / rc.d for automate the procedure.
Note: with DSM 3.0-1137, the file check_fan now directory / sys/module/ppc85xx_synobios/parameters . To find the location of this file, the easiest way is to type the command updatedb , then locate the command check_fan .
Model: EC7025L12ER (Evercool)
Dimensions: 70mm x 70mm x 25mm
voltage: 12 V
Noise Level: 24 dB
Consumption: 1.68 W
Speed: 3000 rpm
Flow: 25.2 CFM
Lifetime: 40,000 hours
The problem with this is its fan noise. It is not very important, but in a quiet room, I find it embarrassing. So I decided to replace it with a quieter model. Fans in these dimensions are not many, my choice fell on a Nexus fan whose specifications are described below.
Model: SP702512M (Nexus)
Dimensions: 70mm x 70mm x 25mm
voltage: 12 V
Noise Level: 19 dB
Consumption: 3.96 W
Speed: 2400 rpm
Flow: 21.1 CFM
Connector: Molex 3 pin
This fan is fully compatible with the original in size and hardware. However, it consumes a bit more (2.28 W) breaststroke slightly less air and is not compatible at connector (it takes out his soldering iron to put a compatible connector on the fan cable). By cons, it is much quieter my ears and in the thank! I keep warm as the original fan replacement.
As nothing is ever simple in computing, there is a problem: Synology beep regularly probably due to the rotational speed of the fan that is not the same. The solution radical is to type the following command in a shell open on the NAS
DS209xII> echo 0> / sys/module/ds508_synobios/parameters/check_fan
More beep, but probably not more warning in case of fan failure ... As this manipulation is done after each reboot, you can put the command in a script called, for example, S99zz_fan_check_disable.sh in the directory / usr / syno / etc.defaults / rc.d for automate the procedure.
Note: with DSM 3.0-1137, the file check_fan now directory / sys/module/ppc85xx_synobios/parameters . To find the location of this file, the easiest way is to type the command updatedb , then locate the command check_fan .
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