Getting Cisco UCS Server's CPU Serial Numbers

Your warranty should be tied to the chassis of the server. Just like this, you should never have to give an individual component's serial number for support. This is especially true for a non-serviceable/non-accessible part like a CPU.

I agree with Ewwhite in that the warranty is tied to the chassis of the server.

The CPU serial number is inaccessible without physically looking at from what I can gather via the CIMC.

Even getting a tech support dump:

the corresponding dump tar only contains the same data the GUI contains. There's nothing in any of the files from a search regarding serial numbers of the CPUs themselves.

But again, if it's under warranty call your Account Manager and let them know the grief you are experiencing...then tell them to send a Cisco field rep onsite at that location.