IBM: Part Number, FRU, or Feature Code?
Trying to navigate IBM hardware presents a seemingly endless array of numbers to describe processor speed, drive storage space, transfer rates, and a host of other characteristics. In the sea of IBM numbers, none are more confusing than part numbers, which are subdivided into marketing numbers, FRUs, and feature codes. In any IBM server installation there thousands of these numbers. Understanding the difference between a part (marketing) number, a FRU, and a feature code can save both time and money.