What is Geo Clustering? How does Geo Clustering work? In “Geo Clustering Explained,” David Hay discusses geo clustering technology using Booth, Pacemaker and Corosync. He’ll discuss why geo clustering is an optimal technology to use when running redundant services between large distances and amongst different sites. He’ll go into detail on how the decision-making technology – Booth – uses a voting system to establish which sites are available to run a given service via the assignment of “tickets”. Lastly, David discusses how DRBD Proxy replicates application data efficiently between sites.