The Cray brochure for this system has more information, including detailed specs: <a href="http://www.cray.com/Assets/PDF/products/cs/CrayCS-Storm.pdf" rel="nofollow">http://www.cray.com/Assets/PDF/products/cs/CrayCS-Storm.pdf</a><p>A few fun points from the brochure:<p>- The internal network ("interconnect") is Infiniband in either a torus or fat tree topology<p>- Up to 512 GB RAM per node<p>- Power usage is up to 63 kW per rack<p>- You have the option of including liquid-cooled rear door heat exchangers, if your datacenter air cooling isn't up to the task ;-)<p>- Compute nodes can have disks installed, but the system supports diskless booting<p>- Each compute node weighs 88 lbs<p>One thing to remember about these machines is that the internal high-bandwidth, low-latency network is a <i>big</i> part of why they get such good performance. Most applications that run on these machines are long-running computations consisting of many processes spread across the entire machine, with lots of inter-process communication throughout the lifetime of the job. Think weather prediction, simulations of fluid dynamics, or complex mechanical systems.<p>(I work on similar systems to these every day. Huge amounts of fun, but quite different needs than your typical web service, or even most Hadoop-ish data analysis problems.)