DSM-G600, DNS-3xx and NSA-220 Hack Forum

Thanks for helping. And already help me a lot, no go for the ramskin
So, will have to go to a fan replace too

In the top is the best solution but, in fact, it will need to be ouside the case. A fine cut with a thin fan protect could work fine.
I'm studing a replace for a bigger in the same place as the oem (in the back), but it lacks dimensions for a decent cooling
Max dimensions in the back since to be around 80x80x20 mm...

Thanks for sharing the info, once again.

I dumped a few more ramsinks on the mobo which still makes no difference, here are some photos which might provide some help with the fan.  I am also considerin a top mounted slim fan with cover, just a shame that we have to mod the device and spoil its clean lines because of poor design or coding

The main board


The main board with ramsinks = no temp change


The internal frame with fan


Closeup of the fan

Last edited by d3fiant (2011-06-02 21:11:50)

You do realise that no matter how big or efficient a fan you add you will not get any improvement in air flow unless you enlarge the inlet space.  Also there is no way, short of mounting a refrigeration unit, that you will get the temperature below ambient.

Now a couple of questions assuming you have monitored the outlet temperature with a recording thermometer unit.  What do you actually want to achieve?  Where is the unit situated? Mine sits out in the open with adequate space round it and is never more than 3 degrees C above ambient - measured with a recording IR thermometer.

It would appear you are giving yourselves a lot of work with no real gain in sight.

For 5v fans look to notebook spare parts.

I don't see a lot of work for a top fan, lol.
I think too that the top solution is exactly for better flow, since the inlet is a lot bigger that the shown in the 40mm fan.
As other solutions (ix2-200), the fan always starts around 50ºC, that would resolve this "problem".

Didn't anyone tried to support for a better threshold (or manual one) ? My local support doesn't give a great answer...

Sorry, my area is construction ... but i think you are missing a crucial point.
we were talking about best airflow with lowest noise.... sure a flow (air pressure) is better in a "small hole" but what about the noise?
And the idea is not a extra fan, but replace the existing, as you could read during the topic.
The idea of a external fan or a blower (like the ix2-200) seems to be good. For example, the ix2-200 hands better than this.

About the temperature, since it is a room you aren't thinking about a +30ºC (room) temperature right?
I think again that are mixing concepts in here and missing the real point....

Last edited by Linhares (2011-06-06 01:15:51)

Hi
For some time I was looking for symilar solution for my NAS. The sound of working fan is quite irritating especially during the night time.
From my observation /and nas logs/ i know that fan kicks in around every 10-15 minutes an then switch off after similar period of 10-15 minutes.(i have only one HD drive). So what if we slow the fan's RPM by let say 50%, and at the same time we will lower the noise. Fan will be working for longer periods (or maybe all the time) but quietly.

Ok now how to slow things down. I think the best and cheapest solution is to use potentiometer, wire it to the fan's cable and manually adjust RPM. Then run some stress test with closed enclosure and use logs/temp reads as reference.

I'am aware that can be done by using fun_plug application -fanctl, (link below) but I never felt strong enough to mess around with the code.
------------
Edited: fanctl is not yet compatible with dns320
------------
http://nas-tweaks.net/85/installation-a … -fun_plug/

What do you think about this idea?

Last edited by wasyl00 (2011-06-07 13:10:11)

Been struggling with fan noise aswell. Ordered a 100x100x12mm 12V 0.16A fan, gonna try power it through an external USB (5V,0.5A) cord.
As I store my NAS in a cupboard, I can live with a removed top cover, simply fastening the fan with glue and velcro/loops would do the trick.
I'll report back on the endeavour by the end of this week.

ivan1 wrote:

carlesbjorn, I doubt very much that the fan will run if you supply only 5v - most 12v fans require at least 9v to start, once started they will run at a lower voltage without a load.

I just tried with a 12v 0.14A fan - just starts at 8.2v - dies at 5v.

If you want it to run off 5v then you will need a 5v to 12v dc/dc converter.  Unfortunately I don't have the Radio Spares catalogue handy to give you a part number.

Hello. can you tell pls if this converter will do the job? Thanks!

Last edited by ataraxic (2011-06-09 20:30:27)

Quick update, got the fan today by mail. Cut a usb cord and patched it with the molex cable. Using an external usb-power adapter it didn't start. Then I plugged the USB into the NAS itself and it ran like a charm, altough of course at a much lower speed.

Atm, the fan draws some 0.8 Watts and placed ontop of the HDDs and it reduced the device temperature from 44 degrees to 39 degrees celsius with the HDDs in hibernation. So I suppose that solved my issues.
Gonna give it some finish, possibly ditching the USB and connecting it to the internal molex instead - however I could managed to open it completely?

d3fiant, how did you remove the plastic cover? :S

ataraxic, If you read the specs that converter takes 12v input and gives  5v output - what is needed is a step up unit that takes 5v input and gives 12v output.

carlesbjorn, It looks as if you are lucky with the fan but before you make any drastic changes check that it works with the the disks running and still gives the desired cooling. It would also help to test that it starts with the container closed.

PeterB123, Try looking for something like a Sunon GM0506PFV2-AG this is a 5v 1.4W unit used for cooling a notebook CPU.

Last edited by ivan1 (2011-06-10 01:09:19)

Hi all,
I did some changes to cool down DNS-320 silent way.

http://imageshack.us/g/842/dns320fan010.jpg/

Installation was done by brute force ;-):
- disassemble DNS-320,
- unmount 40mm fan
- using screwdriver I crack/remove steal plate where fan was mounted - it was melted to bigger steal plate (have to take care not to destroy big plate)
- drill big hole to plastic cover from back of DNS-320
- uncut corner triangles from one side of fan - I could now screw fan from inside of DNS-320

Fan is flushed into back of NAS and temperatures are much lower - noise is now made from HDDs.

deltaboy wrote:

very interesting! i love my DNS-320, but hate the noise the fan makes. is it just luck the 12v fans spin?

Probably all fans will spin on 5V but much slower. In my case it is desired effect. Just try before installing if fan spins even on LOW speed setting.