Guide 01 · storage systems
Five pallet racking systems, compared
Learn the operational trade-offs before choosing a system for your inventory.
Storage density is only one part of a good decision. Consider how many unique SKUs you have, how often you retrieve pallets, whether rotation matters, and how lift trucks will access the loads.
| System | Typical strength | Important trade-off |
|---|---|---|
| Selective rack | Direct access to each pallet position | Requires more aisles than many high-density options |
| Drive-in rack | Dense storage for larger quantities of similar products | Limited selectivity; often suited to last-in, first-out workflows |
| Push-back rack | Multiple pallets deep with fewer aisles | Typically last-in, first-out within each lane |
| Pallet flow rack | High-density, first-in, first-out movement when configured correctly | More complex design and maintenance considerations |
| Mobile pallet rack | Reduced fixed aisle requirements | Higher equipment complexity and aisle-access coordination |
Example: A distributor with many different SKUs and frequent single-pallet retrieval may prioritize selective racks. A business storing large batches of the same product may explore higher-density options. This is a simplified example, not an engineering recommendation.
Questions to ask before comparing quotes
- How many SKUs and pallets must be stored at peak inventory?
- Do workers need direct access to every pallet?
- Is FIFO rotation required for the product?
- What forklifts and aisle widths will be used?
- Are the pallet dimensions, weights, and load conditions consistent?
- What building constraints, seismic requirements, and fire protection rules apply?