Oracle ILOM includes a top-level indicator (TLI) auto-update feature that ensures the TLI stored in the server's field-replaceable units (FRUs) is always correct. The TLI, which is unique to each server, is used to track the server's service entitlement and warranty coverage. When a server requires service, the server's TLI is used to verify that the server's warranty has not expired.
The TLI is stored in the FRUID (field-replaceable unit identifiers) of these components: power supply 0 (PS0), motherboard (MB), and disk backplane (DBP).
The TLI components stored in each component FRUID include:
PPN (product part number)
PSN (product serial number)
When a server FRU that contains the TLI is removed and a replacement module installed, the TLI of the replacement module is programmed by Oracle ILOM to contain the same TLI as the other two modules.