Automated racking can increase storage density and reduce some manual handling, but capacity alone is a poor basis for choosing a system. The right design must move the right stock to the right work area at the pace fulfillment requires. Start by mapping how pallets arrive, where they wait, how orders are picked and when outbound loads leave. Then compare system types against those movements, your warehouse layout, safety needs and total operating costs. A solution that stores more pallets but constrains replenishment or dispatch can shift congestion rather than remove it.
Automated racking is a storage system in which equipment moves or retrieves stock within the rack structure. Depending on the design, that equipment may include a storage and retrieval crane, powered shuttles, lifts, conveyors or mobile rack bases. Software and controls coordinate stock locations and equipment movements. Some systems automate retrieval; others mainly reduce travel or make dense storage accessible.
That distinction matters. A high-density rack may hold more inventory in a given area but still rely on separate equipment and labour to feed picking or dispatch. Before comparing suppliers, define what “automated” needs to mean for your operation: fewer forklift movements, automatic pallet retrieval, more consistent replenishment, reduced travel, or a combination of these.
Begin with the paths that stock and orders take through the warehouse. Trace a typical pallet from the receiving dock to its storage location, then from retrieval through replenishment or order fulfillment to dispatch. Mark where pallets wait, cross paths with other traffic or require an extra transfer. These handoffs often reveal more about the right system than a target storage-capacity figure does.
Build the design around actual operating patterns, including busy periods. Daily averages can hide short peaks that overload a lift, conveyor, retrieval station or staging area. Record the movements required in the periods that matter most, and distinguish full-pallet retrieval from replenishment and order-picking demand. If demand varies by shift, season or customer, include that variation in the design discussion.
Review the stock profile as well as the movement profile. Useful information includes:
Ask how the system will allocate storage locations and prioritise retrievals. If high-velocity lines are spread across distant locations, the design may create unnecessary equipment travel or repeated replenishment. Conversely, storing every fast-moving line near the same work area can concentrate demand at one station. The layout and control logic should balance travel, access and workload.
System names can cover different configurations, so compare the functions and interfaces in each proposal rather than relying on a label. The table below describes broad system types; the actual performance depends on the design, stock profile and surrounding material-handling equipment.
| System type | How it stores or retrieves stock | Potential fit | Key limitation to assess |
|---|---|---|---|
| Unit-load AS/RS with a storage and retrieval crane | A crane travels within a storage aisle to place or retrieve pallet loads from rack locations. | Operations seeking automated pallet storage and retrieval with defined transfer points. | Throughput depends on the complete system, including aisle design, transfer equipment and station capacity. |
| Shuttle-based pallet storage | Powered shuttles move pallets within rack channels, with lifts or other equipment transferring loads between levels or work areas. | Operations with repeated pallet movements and a need to use storage lanes densely. | Lane access, retrieval sequence and the way stock enters and leaves the system must suit the required flow. |
| Automated mobile racking | Rack sections move to create an access aisle; separate handling equipment may still retrieve the pallet. | Sites where reducing the number of permanently open aisles is a priority. | Rack movement is not the same as automated retrieval, so assess access time and traffic at the opened aisle. |
Use this comparison to narrow the discussion, not to select a system on its own. For example, if pallets must be delivered automatically to a production or picking point, establish exactly which equipment performs each transfer. If the main objective is denser storage, check that the access pattern and stock rotation remain workable. A vendor should be able to show the proposed flow from receiving through storage and out to the required destination, including where pallets queue.
Automated racking changes how space is used around it. The design needs room for input and output stations, replenishment, exception handling and any conveyors or lifts that connect the system to other processes. Receiving and dispatch areas also need enough capacity to absorb variations in arrival and order timing. If those areas are undersized, rack performance may be limited by queues outside the storage system.
Check the relationship between the racking and existing operations. Consider forklift routes, pedestrian routes, packing and picking locations, dock access and any production areas that exchange stock with the warehouse. Avoid designing a layout where inbound pallets and outbound orders compete for the same narrow transfer point without a clear operating plan.
Confirm the building conditions early. The available height, floor capacity, clearances, services and existing structures can affect system design. In New Zealand, have appropriately qualified professionals assess the building and the proposed installation, including relevant seismic, fire-protection and workplace-safety considerations. Do not assume that a system shown in a supplier’s standard layout will fit an existing site without changes.
Automation changes where people interact with moving equipment; it does not remove the need for safe work planning. Define which areas are accessible to staff, how access is controlled during operation and how maintenance or recovery work is carried out. The equipment supplier, facility team and health-and-safety personnel should agree on the operating and maintenance procedures before commissioning.
Plan for exceptions as carefully as normal movements. A damaged pallet, an incorrect load, a blocked transfer point or a stock-record error can interrupt flow. Ask what operators see when an exception occurs, how the affected pallet is recovered and whether the rest of the system can continue operating. The answer should identify who responds and what equipment or manual process is available.
Also discuss downtime and maintenance. Clarify how the system reports faults, which components need planned servicing, what support is available and how critical parts will be managed. The appropriate fallback depends on the site: it may involve alternate storage or handling, manual work within a defined safe process, or temporarily changing fulfillment priorities. Avoid treating “manual override” as a complete continuity plan unless its steps, staffing and safety controls are understood.
The purchase price is only one part of the investment. A sound comparison includes installation and commissioning, software and controls, integration with existing systems, building work, training, maintenance, energy use and the cost of operational downtime. The scope varies between projects, so request clear assumptions and inclusions from each supplier before comparing proposals.
Estimate the benefits using measures that matter to your operation. These might include handling movements, travel, replenishment effort, storage use, order turnaround or the space available for other work. Use the same baseline and demand assumptions for every option. If the business case depends on faster fulfillment or lower labour requirements, identify the process change that would produce that result and check that the system design supports it.
Test the business case against more than one operating scenario. Consider a period of lower demand, a change in order mix and the peak period the system must handle. A design that performs well only when stock, staffing and demand follow a narrow set of assumptions may be difficult to operate in practice. Ask suppliers to explain what happens when movements exceed planned capacity or a key component is unavailable.
It can increase storage density, but the result depends on the system, building and access requirements. A denser layout may also change how quickly stock can be reached or how replenishment works. Compare usable storage and operating flow together rather than treating capacity as the sole measure.
It can be considered in a smaller facility, but available space alone does not establish whether it makes sense. The business case should reflect movement patterns, stock characteristics, integration needs and the cost of changing the current process. Compare automation with simpler layout or equipment changes before committing.
Provide a current stock profile, pallet and load details, order patterns, movement volumes, peak-period requirements and a layout of the facility. Include how inventory is managed and where the system must connect to receiving, picking, production or dispatch. Better input makes it easier to compare proposals on a consistent basis.
That depends on the software, equipment controls and interfaces proposed for the project. Ask suppliers to describe how stock locations, movement instructions and exception messages will be exchanged, and which party is responsible for each integration. Test those processes before the system goes live.
Include the complete project and operating costs, such as integration, building work, training, maintenance and downtime, alongside the expected operational benefits. State the assumptions behind any projected savings or throughput improvements. Compare scenarios so the decision does not depend on a single demand forecast.
Automated racking is most useful when its storage method, retrieval process and surrounding work areas support the same operating plan. Define the flow first, compare system types against that requirement, and validate layout, safety, integration and lifecycle costs before selecting a design. The strongest proposal is the one that handles your real inventory and fulfillment patterns without moving the bottleneck somewhere else.
