Answer
The people who own the room and workload should sign off before the cutover.
- IT
- Facilities or data center staff
- Installer or reseller
- Workload owner
- Rack
- Power
- UPS
- PDU
- Cooling
- Cabling
- HMC
- Console
- Service-clearance plan
The sign-off should use the final configured system, not a generic model estimate. If the configuration changes after review, repeat the facilities check.