More documentation for this product is available at
https://documentation.suse.com//sle-ha-12/.
For example, the Geo Clustering Quick Start guides you through
the basic setup of a Geo cluster, using the Geo bootstrap scripts
provided by the ha-cluster-bootstrap
package.
A document with detailed information how to on data replication via
DRBD across Geo clusters has been published in the SUSE Best Practices
series:
https://documentation.suse.com/sbp/all/html/SBP-DRBD/index.html.