Complete information about setting up a track data hub is available at http://genome.ucsc.edu/goldenPath/help/hgTrackHubHelp.html. A hub requires three components: one or more datasets formatted in a compressed binary format supported by the Genome Browser, a set of text files that specify properties for the track data hub and for each of the data tracks within it and a server with Internet access to host the data and text files. The data files underlying a track do not have to reside in the same track hub directory or server as the text files, but they must be accessible through the Internet.
