Datacenter Infrastructure

Jul 08, Facebook released Cassandra to open source under the Apache license. Facebook uses Cassandra as email search system where, as of last summer, they had 25TB and over 100m mailboxes. This video gets into more detail on the architecture and design: http://www.new.facebook.com/video/video.php?v=540974400803#/video/video.php?v=540974400803. My notes are below...

Google datacenter blueprint

We look at the construction and design of both types and present results demonstrating that high-density DCs are a better choice for reducing the owners cost. These results apply to new construction and mostly-unconstrained retrofits. Densities of 1000 watts per square foot of work cell are being achieved with good efficiencies. Modern designs of 200 to 400 watts per square foot of work cell are much more common, but cost more. Costs of the architectural space, power systems and cooling systems are reviewed as are the operational costs for these systems. High-density DCs do cost less. The challenges for the high-density DC are also called out and suggestions for successful operation are made.

low latency hardware based middleware and content networking

Continuous measurement of power usage by all these elements lets us monitor the health, operating cost, and relative efficiency of our data centers. As we outline below, our approach has led to state-of-the-art efficiency

cloud services operating system that serves as the development, service hosting and service management environment

includes seismic

DC Power Production, Delivery and Utilization