Is that because you require a certain distribution?
As I understand it, currently only Debian Wheezy is officially supported, but many of us are successfully running MC on other linux distros (I run it on Arch and Debian Jessie, many others run it on Ubuntu and Fedora, etc.). So the distro isn't necessarily a hard bar.
Two rate-limiting factors to getting MC running on a commercial NAS is that MC requires certain CPU instruction sets that some lower powered NAS processors may not have, and MC relies on several libraries that may not be present/available on a commercial NAS build. See the first post of
this thread for the basic requirements. That info may be a little dated, but will give you an idea (I think there are some additional libs required in newer builds as well).
I don't know if any commercial pre-fab NAS boxes meet the hardware and software requirements. As far as I know no one on the forum has gotten MC to run successfully on a pre-fab NAS yet. There have been a few valiant efforts, but so far no success stories, see:
http://yabb.jriver.com/interact/index.php?topic=89981.0http://yabb.jriver.com/interact/index.php?topic=88990.0If you have a computer with a processor that has the necessary instruction sets and you have full control over the software installed on it, you may be able to use it as a NAS and get MC running on it, but unless it's running a regular 32-bit Debian Wheezy install you'll need to work out some of the steps yourself (although there are several threads on MC setup in different distros).
If you're interested in DIY, I built a home-NAS around the following $70 MoBo with an integrated 1037U dual-core processor:
http://www.newegg.com/Product/Product.aspx?Item=N82E16813138393Total system cost to assemble (excluding harddrives) was about $150*, which is a good deal cheaper than many commercial NAS boxes. And it does much more: it runs MC alongside a x86 Debian install with plenty of breathing room, it has headers for 4 hard drives, and the system draws about 15 or 20 watts at idle with three disks in it (much less when asleep, but I don't let mine sleep).
*That was with some parts on sale; regular price would have been more like $180 or $190, which is still competetive with the Synology NAS systems.