Start with watching the Alfresco hosted webinar: High Availability Clustering with Alfresco to get a high level overview.

Then read thru rivetlogic’s comprehensive page that includes notes on disaster recovery: Deploying HA Alfresco on Linux. This is mirrored on the AlfrescoWiki. Not sure which wiki page is definitive.

Finally, put it into practice with a working example by following Jeff Potts’s walk-thru of a simple set up to get a feel for it: Alfresco 3.1 clustering easier with JGroups.

Reference details:

AlfrescoWiki: Configuring JGroups and Alfresco Clusters

AlfrescoWiki: Cluster Configuration V2.1.3 and Later

Alfresco Webinar: High Scalability with Alfresco WCM (great information about various options)

Special thanks to Jeff Potts who answered a related query of mine on Twitter.

I’ll be sure to post progress here once I’ve a few working examples.