You can reconfigure a cluster to add instances, change trace flags, and so on. Edit the cluster input file and then create a new run file for the instance you intend to boot first that includes dataserver with the cluster_input option. This option tells Adaptive Server to write the new configuration information to the quorum device.
Log in to any instance, and shut down the cluster.
If you use sybcluster or the Adaptive Server plug-in, you do not need to shut down the cluster before reconfiguring it.
Extract the current configuration to a file using the -extract_config command to the qrmutil utility. See the Users Guide for more details:
Edit the cluster input file.
Copy the run file for the instance you intend to boot and add the --cluster_input option to the dataserver statement. For example, change RUN_ase1 in this way:
$SYBASE/$SYBASE_ASE/bin/dataserver\ --cluster_input=/<input_file>\ --quorum_dev=/dev/raw/raw11\ --instance=ase1\
Start the cluster.