Keep good records of the system location, names, and management addresses.
System identification becomes more difficult when you have multiple systems in your data center and multiple systems in the same rack. Keep your records up to date for the system location, names, and management addresses. Use the serial number on the front and back of the enclosure to help you distinguish the systems. It is useful to label the enclosures themselves with the system name and the management IP addresses.
If you have only one system, it is relatively easy to identify the enclosures that make up the system. Identification becomes more difficult when you have multiple systems in your data center and multiple systems in the same rack.