y. In production we tend to use clusters of 5 or 9 machines. Ideal configurations are one master node with a power-of-two number of storage nodes. Any number of storage nodes can be used, but 2<sup>n</sup>+1 should be avoided for performance reasons.
</p>
<h2 id="Distribution">Distribution</h2>
<p>
Our productions systems all run on the 64bit versions of <a class="ext-link" href="http://www.centos.org/"><span class="icon">​</span>CentOS 5 or 6</a>, but any 64-bit Linux distribution should be OK.
</p>
<p>
