3.3 Logistics and facility costs in logistics network configuration
The logistics and facility costs of a supply chain are dependent on:
- the number of facilities
- the locations of the facilities
- the capacities allocated among the various facilities.
The decisions regarding these are complex. There are many trade offs involved and these include not only the cost elements of the individual elements, but also the service level attainable by a particular configuration.
Read your text for more discussion about the relationships between the number of facilities, their location within a supply chain network, the allocation of capacities with the system wide cost and the logistics service level of the network. These are summarised below:
- The number of warehouses determines how close the products are to the customers. It is apparent that with warehouses increasing in number, the specific locations served by each warehouse gets smaller and so does the average distance from the warehouse to the retailer. This allows quicker response to customer orders and better service levels.
- The inbound transportation costs generally increase as warehouses are located closer to the market. The outbound transportation costs decrease as distances to retailers decreases.
- As the number of warehouses increases, the total safety stock, the aggregate of safety stocks required at each warehouse, also increases. This increases the inventory holding cost connected with safety stock required for the entire network.
- Setting up and operating more warehouses involves additional expenses related with set up and overhead costs.
Network configuration. As we saw in the previous chapter, the logistics network design decisions are decisions taken at the strategic level of the firm. The decisions are usually complex because the design requires analysis involving a large number of data with many variables concerning distribution, customer service level, transport and inventory. Additionally, the design must accommodate strategic visions regarding growth with practical constraints in consideration. In supply chain management and logistics, the network design is invariably carried out with the aid of a DSS (decision support system).