The ESS is designed as a suite of components that enable and facilitate sensor networks, their deployment, management, and usage. In meeting its charter, the ESS spans a comprehensive set of platforms and operates in a diverse set of environments. It is, therefore, based on a tiered architecture comprised of; motes (mica2, tos, chipcon, sensor interface board), microservers (strongarm/xscale, linux, motenic, 802.11), commodity platforms (x86, linux, 802.11) platforms, and enterprise platforms (such as solaris and oracle)...