For the steps below, rkm1 is considered the existing Primary appliance running 2.7 SP1, and rkm2 is the new standby appliance to be added to the cluster.

1. Re-image rkm2 using the 2.7 Appliance ISO. If a failed installation already occured, you can simply run the script /opt/rsa/setup/uninstall to revert back to 2.7.
2. Run the install script in /opt/rsa/setup, and select the option to install a single secondary. Follow the steps as if you were doing a normal standby installation.
3. Download the 2.7.1.2 migration utility. Follow the normal steps to upgrade the appliance to 2.7 SP1 up to the reboot.
4. After the reboot, verify that rkm2 is running as a primary. If it is not, download the cs_scripts_addons.tgz scripts (contact RSA Support) and run /opt/rsa/setup/sh/cs_switchover.sh. This will switch the roles so that rkm2 will now be running as a Primary.
5. Keep going with the Post-Restart steps from the migration guide.

Once completed, verify via the DB Status pages (/status/db) that everything is running as expected.