Submitted by “Solaris Cluster provides high availability and global disaster recovery to suit the evolving needs of virtually any datacenter in any industry: across local distances, campuses or metropolitan areas, and across the world, ensuring business continuity without compromise. With out-of-the box support for the largest number of commercial and open-source applications, open and flexible configurations for both horizontal and vertical scaling, integration with the Solaris kernel and support on both SPARC and x64 platforms, Solaris Cluster provides industrial-strength high availability to your applications.” There’s documentation too.
Just to let know everyone that ZFS is finally supported in Sun CLuster and works like a charm in that configuration. For some other folks new Quroum Server could be interesting – it lets you setup Cluster without any shared storage. There are other new things others can find as much cool.