During this morning's Chat with the Lab on Virtualization and Cloud computing with IDS (which I thought went quite well, in that it wasn't the worst webcast I've done, though I always think of some extra things I could have said afterward), I made a vague threat to post a link on this blog to an IDS High Availability demo showing HDR and MACH11 failover across Amazon Availability Zones.
This demo, and two others can be found on the Amazon Web Services blog: http://aws.typepad.com/aws/2009/05/ibm-informix-database-in-the-cloud.html. The high availability demo is the second one.
The slides for this lab chat (and others) can be downloaded from here: http://www-01.ibm.com/software/data/informix/labchats/#24.
Links to AWS Demos (Chat with Lab follow-up)