ABSTRACT
DBR itself was first described in detail by Goldratt and Fox in
The Race,
and in even more detail in
The Haystack Syndrome
.
The “drum” in DBR was first considered to be the internal capacityconstrained resource (CCR) that limited the overall production of a company. Later, it came to represent the production schedule for the CCR. The constraint is likened to a drum because it establishes a pace, or frequency, to which the whole organization synchronizes itself. By using the capacity of the most limited (constrained) resource in a dependent chain as the drum, the whole process is safeguarded against overloading, which slows down the flow of work. When no CCR is active, the drum is merely the list of shipments due to customers.
