It sounds like you dont have a process.
Your process isin't necessarily documentation of how you do specific tasks (how to build a server), but a representation of the flow of work from input to output (what was required to build the server for the desired outcome).
Thats an incredibly hard question to answer without knowing the scope of what he's asking about, and I apologize if I dont answer your question. To be frank, it's not fair of him to ask you for a SIPOC or COPIS if you are not a part of his SixSigma or ITIL process that he is obviously involved in. It takes many many months to get a handle of SixSigma and ITIL. What he is asking you isin't fair.
I would ask him these key questions.
1. what is the scope of the project.
2. can you define which part of the scope you are referring to.
3. what process model do you need.
4. what is your expected result.
I could offer a couple of good books that helped me out. 1. Lean SixSigma for dummies. 2. http://www.amazon.com/Data-Stewardship-Actionable-Management-Governance/dp/0124103898/ref=sr_1_2?s=books&ie=UTF8&qid=1429890065&sr=1-2&keywords=sipoc