Service Action to Prevent PSU Failures in ReadyNAS NV/NV+

Has any one looked at HD temps after vs. before the fan reversal?

I think I'd rather lose a PSU than an HD.

Also, what about a rear dust filter for reversed cooling fans if that turns out to be non-detrimental to the HD cooling.?

Maybe Infrant could provide such a filter kit for a reasonable charge?

Kudos for being proactive and notifying the user base.

Dave

What about the problems that dust may cause? We have cats and live in the midwestern US- there is lots of stuff in the air like dust, pollen, cat fur. This doesn't sound very safe.

Will I need some kind of air filter in my room?

yoh-dah wrote:

SJMarty wrote: After installing via local update and rebooting, I received this message in a pop-up window when I accessed via FrontView... This add-on (Enhance_NV_Thermal_Characteristics) does not apply to this system. What should I do at this point? There's a EnableFanMinRPMOverride addon at http://www.infrant.com/wiki/index.php/Add-Ons that allows you to override the minimum fan RPM. You can install this and manually set it for 2100. This will essentially do the same thing.

Regarding this add-on, http://www.infrant.com/wiki/index.php/Add-Ons says

Use of this addon is discouraged as misuse can lead to fan circuitry failure on the mainboard. Please also understand that use of this addon will void your ReadyNAS warranty.

Are you suggesting that we pursue an option that would void our warranties?

glam wrote:

yoh-dah wrote: SJMarty wrote: After installing via local update and rebooting, I received this message in a pop-up window when I accessed via FrontView... This add-on (Enhance_NV_Thermal_Characteristics) does not apply to this system. What should I do at this point? There's a EnableFanMinRPMOverride addon at http://www.infrant.com/wiki/index.php/Add-Ons that allows you to override the minimum fan RPM. You can install this and manually set it for 2100. This will essentially do the same thing. Regarding this add-on, http://www.infrant.com/wiki/index.php/Add-Ons says Use of this addon is discouraged as misuse can lead to fan circuitry failure on the mainboard. Please also understand that use of this addon will void your ReadyNAS warranty. Are you suggesting that we pursue an option that would void our warranties?

It's been updated to say "Please also understand that use of this addon to lower the fan RPM below the default will void your ReadyNAS warranty."

Simply, what we're really trying to say is if you lower it below what the fan circuitry can handle, you could be putting a strain on the motherboard and forcing a failure -- just don't do that!

bashkin001 wrote:
What about the problems that dust may cause? We have cats and live in the midwestern US- there is lots of stuff in the air like dust, pollen, cat fur. This doesn't sound very safe. Will I need some kind of air filter in my room?

If dust is of concern, go for the add-on.

Fox Mulder wrote:

yoh-dah wrote: New ReadyNAS NV+ that will get into the field will be shipped with 2100 min RPM. Earlier you said that reversing the fan provides better cooling. How will new NV+ units be shipped from the factory? (i.e. which of the following will be true) Minimum 2100 RPM fan speed? Reversed fan? No mesh on front door? Will a future firmware update enforce this without an add-on? I want my ReadyNAS NV+ to be both reliable and quiet, but if I had to trade one for the other, I'd pick reliability. I feel most confident doing the same thing here that you are going to do with your newly shipped boxes. Can you clarify?

The new systems are being shipped with 2100 RPM.

yoh-dah wrote:
The new systems are being shipped with 2100 RPM.

With no other changes? (i.e. identical to what will happen if I install the add-on mentioned in the technote?)

Fox Mulder wrote:
yoh-dah wrote: The new systems are being shipped with 2100 RPM. With no other changes? (i.e. identical to what will happen if I install the add-on mentioned in the technote?)

Yes.

Idle temp on the drives looks to have increased 1-2 degrees C after doing the fan reversal.

The dust issue is a bigger one. Since there is now no filter, dust will be deposited all over the inside of the unit/drives. Even though our unit operates in a relatively clean, server room environment, I will probably create some sort of filter to place under the chrome grill outside of the fan on the back and remove the filter from the front. Or I may switch it around back the way it was; 1:100 is pretty good odds that there will not be trouble ;)

Users with a NAS unit operating in a dustier environment should definitely be concerned as dust can cause circuit failures after it builds up.

Thanks yoh-dah. If Infrant is going to make 2100 RPM without fan reversal the factory configuration, I'll do the same (rather than second guess your hardware folks and reverse the fan.)

That alleviates the dust concerns too. May make for more noise, which is never pleasant, but probably the best compromise under the circumstances.