Rackable's "MicroSlice" arrays

Companies are starting to introduce products similar to our own research on Fast Arrays of Wimpy Nodes that exploit the idea of packing more smaller computers into a single enclosure. The commercial offerings are much less radical than some of the proposed research designs, but should experience some of the benefits anyway. James Hamilton, now at Amazon, has a nice post to his (very worthwhile) blog about low cost, low-power servers. The techtarget article attributes to Rackable a statement about getting rid of the need for virtualization, but I suspect that the technologies will remain complimentary.