When you upgrade to TeamForge 16.7 on RHEL/CentOS 7.2, you can have Black Duck Code Sight on a separate RHEL/CentOS 6.8 server. Choose the instructions that fit your case.
TeamForge 16.7 supports RHEL/CentOS 7.2. However, it also supports RHEL/CentOS 6.8 if you choose to upgrade on the same server that runs RHEL/CentOS 6.8.