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[rspyder]

I would like to suggest changing the DNS323 low fan speed to 2000 rpm instead of the present low default (2500 rpm?).  When I set the fan to 2000 rpm using the funplug, I can hear nothing, but still feel the air flow and the fan is definitely turning.   The current default low fan speed I can hear quite easily.

Perhaps giving users who want their fan on all the time a fan speed option would be best.

[gunrunnerjohn]

The fan seems somewhat pointless anyway, since there are no intake vents for air to come in!  I've modified the case of both my DNS-323 and DNS-321 to allow some intake vents, it made a huge difference in the temperature of the box!  I dropped the running temperatures 6-7C, they were hitting 57-58 when the box ran for a long period of disk activity.  Now I hardly ever see them hit 50C, which is plenty hot enough!

Every 10C increment in temperature reduces the MTBF of the typical hard disk by about 50%, food for thought.

[badbob]

Isnt't the vent hold on the front bottom edge? My two Samsung 500GB drives reach no higher than 50 degrees which is pretty high compared to what I get in the PC computer cases

[gunrunnerjohn]

There is no vent in the stock case, I hogged out a vent in both my DNS-323 and DNS-321 to allow decent cooling.  I obviously can't give you a picture of the stock case anymore, but just look and see if you see ANY place that air could go in.

[rcblackwell]

Isn't the vent hole on the front bottom edge?

Yes, there's a slot across the bottom of the front cover that provides an opening for ventilation.

[gunrunnerjohn]

Well, the slot was so small as to be unnoticeable on mine, and it didn't cool worth a hoot!  It does now.

[stillerz]

My fan seems to run constantly, even after long periods of no activity.  Is this the right behavior?

I was hoping that the fan would spin down when the drives and NAS were in a low power state, so I'm wondering if this is just a problem with the 1.08 beta firmware.

Thanks!

[gunrunnerjohn]

The fan on the DNS-321 has always been noisy, and that's even before I loaded new firmware.  Mine would continue to run well after the disks had gone into hibernation, AAMOF, I don't recall it ever stopping.  I put my DNS-321 in the basement, the fan noise doesn't bother me any morel 


The fan on my DNS-323 is much quieter, and also has a control to allow you to change it's behavior.

For the DNS-323, you get the following options.
--------------------
Auto: off / low / high
Auto: low / high
Manual: high
--------------------

I use the low / high option, and my DNS-321 has been active using the disks for over an hour using the two disks, and the fan is still on low speed.  The clicking of the disks are louder than the fan, and I have to get right next to it to hear anything.

A similar option would be really nice for the DNS-321, and might go a long way to addressing the loud fan complaints.

[stillerz]

I think I figured this one out.  When I set the fan to Auto/High/Low, it goes into low speed or quiet mode now.  I suspect this is a bug in the firmware because Auto/High/Low/Off should really not be any different when the DNS-323 is not in use.

Has someone reported this bug already?

[gunrunnerjohn]

Don't know, you could post it in the bug area anyway.