To those of you who have been following Sun's software strategy, it should come as no surprise that we've been thinking about open-sourcing Sun Cluster. As the first (public) step in this direction, I've recently proposed an HA Clusters community on opensolaris.org. You can read the initial post here, and find the whole discussion in the June archives here.

To quote from my community proposal email:

Sun Microsystems will contribute to the community the source code for
Solaris Cluster, Sun's commercial HA Cluster product group, under the
name “Open High Availability Cluster.” This contribution will start at
the time of community formation with the Sun Cluster Agents source for a
wide portfolio of applications.

Stay tuned for more details!

Nick Solter
Solaris Cluster Development