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Forum Discussion
Changing Fan in ReadyNAS ultra 4+ PSU
I've had a ReadyNAS ultra 4+ for a couple of weeks and found the fans to be a bit noisy. I've already changed the main 92mm one for a 120mm. Its helped a bit but I think the the main was actually ...
The case fan is mounted in a back panel that is about 3/4 of the back area. In order to remove the PSU, you would have to remove a screw that is under a sticker that warns that removal voids the warranty of the unit. DO NOT remove the PSU. You can actually see quite a bit without removing it. There should be a plastic shield in the PSU that prevents airflow from bypassing the metal shield over the components. The air flow must enter the case at the front and side vent holes and then enter the shield at the front, under the drives through vent holes in the shield pass over the components and exit the shield at the back to exit via the fan.
While the image above is the replacement for an NV/NV+, the PSU in all 4 bay units should be similar, unless, as demusss said they have made a change that has not been announced. At one time the original NV (Rev A) had a 40 mm fan that was plainly visible when looking at the rear of the unit, it was removed by a production change in 2006. The changed NV is referred to as (Rev B) and the PSU is similar to above without the plastic shield and metal cover over the components. That early PSU (I have one in my NV+) gave problems with early failures and the improved version is pictured above.
The 40mm fans are found in the rack mount units and run a very high speed and are notoriously noisy. One of the reasons rack mount units are normally found in their own room.
The fan on my NV+ is currently running at 2027RPM and both my NVX unit fans are running at 1956RPM. The temperature of my NV+ (3 x 1TB drives) is 90F, the primary NVX (sitting on top of hutch) with 2x3TB + 2x1TB drives is 113F and the temp of my backup NVX with the same drive configuration as my primary unit and sitting on top of a table next to my NV+ is 102F. I am sitting less than 5 feet away from them and only hear a low hum from the combined 3 NAS units and my desktop PC.
There have been comments in the past about some of the 4 bay units being noisy, and others with the same units saying they are quiet. I personally think the drives make more noise than the fan.
While the image above is the replacement for an NV/NV+, the PSU in all 4 bay units should be similar, unless, as demusss said they have made a change that has not been announced. At one time the original NV (Rev A) had a 40 mm fan that was plainly visible when looking at the rear of the unit, it was removed by a production change in 2006. The changed NV is referred to as (Rev B) and the PSU is similar to above without the plastic shield and metal cover over the components. That early PSU (I have one in my NV+) gave problems with early failures and the improved version is pictured above.
The 40mm fans are found in the rack mount units and run a very high speed and are notoriously noisy. One of the reasons rack mount units are normally found in their own room.
The fan on my NV+ is currently running at 2027RPM and both my NVX unit fans are running at 1956RPM. The temperature of my NV+ (3 x 1TB drives) is 90F, the primary NVX (sitting on top of hutch) with 2x3TB + 2x1TB drives is 113F and the temp of my backup NVX with the same drive configuration as my primary unit and sitting on top of a table next to my NV+ is 102F. I am sitting less than 5 feet away from them and only hear a low hum from the combined 3 NAS units and my desktop PC.
There have been comments in the past about some of the 4 bay units being noisy, and others with the same units saying they are quiet. I personally think the drives make more noise than the fan.
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