Unfortunately, unfortunately, ... 2

Do I have the negative reviews ignore.
When unpacking the impression was positive, although all made of plastic, but relatively valent, for the price.
After the two hard drives installed, here lacked a damping holder with a slide.
But when you turn came a resounding disappointment. The fans sing a loud and such up and decongestant song that a concentration is sentenced to some thing in the same room to fail.
The NAS is about 2m away and the fan is totally unnerving.
I fear that even replacing the fans creates no improvement because it's the same in my opinion the control.
Too bad, the price would be more than fine.

Update 12/11/2013:
Sat down today with the Zyxel support in connection and it will be sent to me a free Ersatzlüfterkit.
Delivery time about 1 week; I will then update my report.
Very pleasantly surprised by the professional support!

Update 12/21/2013
The package is on the way with UPS and is probably only at 27.12. delivered.
Guess I can create in week 1 or 2 in the next year the report then.

Update 23.12.2013
The little packet with the replacement fan did come today.
I could not resist to install the fan immediately.
Then restart NAS, wait a bit until the boot process is complete, and then ..., the fan starts up and is really at this stage barely perceptible.
In operation, it is now really as different as day and night, barely perceptible.
Zyxel has here a 80mm fan from Coolink, the Swif2-80L sent (see photos.), These costs here at Amazon ca. 10.- - 15.-.
This alone makes the fan about 10% of the purchase price (currently about 90.-), but the conversion is worth really.
I would not have thought of before.
Therefore, I go from two to four stars, only the touching up with Zyxel or own conversion in a new market
Product costs of the past five.
Outstanding I find professional support (mail and phone), I was already pleasantly surprised.
I would recommend to anyone to disturb the noisy fan to venture to the conversion.

Update 30.12.2013:
Have the NAS completely filled and it now runs for two days without interruption.
The fan is barely audible, rather I hear the hard drive noise.

Conclusion:
By me sent to them fan model, the NAS is really quiet.
Hopefully Zyxel sent all 'plagued' customers this model.
Now I really enjoy my NAS, as it is now also become the living room suitable for me.