To upgrade from a noncluster Adaptive
        Server to the Cluster Edition, perform preupgrade tasks, then upgrade using the sybcluster utility.
 The command line-based sybcluster
            utility allows you to create and manage a cluster. The utility uses the SCC Agent
            Framework to "plug in" to the Sybase Control Center remote command and control agent on
            each node in the cluster. The SCC agent processes the sybcluster commands that let you manage the cluster. See the Users Guide to Clusters for detailed information about
                sybcluster, and the Sybase Control Center
                for Adaptive Server for the SCC Agent Framework.
Before you start the upgrade:
- Back up
old databases.
- Install the Cluster Edition. Make sure that the nonclustered
                    Adaptive Server that is to be upgraded and the Adaptive Server Cluster Edition
                    version 15.7 ESD #2 installation directories are located on the same machine.
                    This is the upgrade machine.
- Review how to create and start a cluster, and prepare your
                    worksheet for information you need for the upgrade.
Before you upgrade:
- Make sure that your
                    server is ready.
- Upgrade the server to Adaptive Server Cluster Edition version
                    15.7 ESD #2.
After upgrading, whether manually or using 
sybcluster, perform
            the postupgrade tasks.