A modelling strategy is presented that links three major policy issues
associated with the distribution systems serving a random process of
item retrieval demand. These issues include inventory management, spac
e allocation between reserve and retrieval storage areas, and storage
area layout. The analytical base for system cost components related to
these policies is derived and incorporated into a computational evalu
ation model. A sample problem is used to demonstrate the model for ana
lyzing costs associated with the design and operation of a distributio
n system.