This is a high level list of the steps necessary to install and configure a Calendar Server HA configuration.
Log in as Superuser
Prepare Each Node in the Cluster
Install Sun Java Enterprise System Products and Packages
Configure the Logical Host
Activate the Storage Resource
Run Postinstallation Configuration Programs
Locate Automatic Backup Directories on Shared Storage
Relocate the Calendar Server config Directory
Edit the Calendar Server ics.conf File
Start the HA Calendar Server
Verify the HA Configuration