DI Suite components are, by default, installed in the /opt/sybase directory. During installation, the installer checks the $SYBASE environment variable for any existing Sybase directory that was created for another Sybase product. If the installer locates a Sybase directory, it by default installs the components in this directory. If the installer cannot locate such a directory, it creates one and installs all components in the new directory.
Sybase recommends that you install DI Suite components into the existing Sybase directory, if one exists.