I'm reading through the ZCM 10 SP2 Installation Guide, and in the Gathering Installation Information section it refers to Certificate Authority information. The Preinstallation Tasks section then includes a section pertaining to Creating an External CA. I don't see anything about why to use an internal or external CA.

We're implementing ZCM in an environment that includes eDir, OES Linux 2 SP1 servers, with an existing CA. Should I be using our existing CA to issue a certificate for the ZCM Primary Server, or use (what I assume is) the ZCM internal CA? Or what are the pros and cons of each, if it's not a simple yes or no?

Thank you.