You can use a rolling cluster update approach to upgrade from Novell Business Continuity Clustering (BCC) 1.2.2 to BCC 2.0 on your fully patched Novell Open Enterprise Server (OES) 11 Support Pack 1 (SP1) clusters.
Section H.1, System Requirements for the BCC 2.0
Section H.2, Preparing to Upgrade to BCC 2.0 on OES 11 SP1
Section H.3, Upgrading to BCC 2.0