Finally, the SPARC Enterprise T5440 has arrived! It's nice to see this beast released into the market. It's amazing to think that in 4 rack units, there are 256 threads, 32 cores, 4 CMT processors, 64 FB-DIMM slots, and 8 PCI-E slots. Definitely a lot of power in a relatively small package. This would be a great fit for highly multi-threaded applications or for consolidating applications. With the use of Solaris Containers or LDoms, one could use racks of T5440's to migrate and consolidate many applications. Considering that most servers today are less than 30% utilized, this is virtualization power house.
In other news, Sun has started a Cookbook wiki for LDoms. Definitely a great start on a large topic that is becoming more complicated and challenging.