Automated Storage and Retrieval Systems (AS/RS) transform warehouse operations by automating how goods are stored, managed, and retrieved. These systems reduce manual handling, improve space utilization, and support faster, more accurate order fulfillment.

In this guide, we explain what AS/RS is, outline the key benefits, and break down the main types of automated storage systems, so you can better understand which solution fits your operation.

What Is an Automated Storage and Retrieval System (AS/RS)?

An Automated Storage and Retrieval System (AS/RS) is a warehouse automation solution that uses computer-controlled equipment to place and retrieve goods from storage locations automatically. These systems integrate with warehouse management software to track inventory, optimize movement, and reduce human intervention.

AS/RS is an umbrella term that includes several technologies designed for different load sizes, speeds, and operational needs. Systems may handle everything from full pallets to small parts stored in totes or trays.

Benefits of Automated Storage and Retrieval Systems

Implementing an AS/RS can deliver measurable operational improvements, including:

• Maximized space utilization: High-density and vertical storage allow warehouses to store more inventory in the same footprint.
• Improved throughput and efficiency: Automated retrieval speeds up order fulfillment and supports consistent performance during peak volumes.
• Reduced labour dependence: Automation minimizes repetitive manual tasks and helps offset labour shortages.
• Greater inventory accuracy: Real-time tracking reduces picking errors and improves stock visibility.
• Enhanced safety: Automated handling limits forklift traffic and manual lifting, reducing accidents and product damage.

Main Types of AS/RS Systems

Unit-Load AS/RS

Unit-load systems are designed for full pallets and heavy loads. Stacker cranes move pallets in high-bay racking with narrow aisles, maximizing vertical storage. These systems are commonly used in large distribution centres and manufacturing facilities with high pallet volumes.

Mini-Load AS/RS

Mini-load systems handle totes, cartons, and small cases. Fast-moving cranes or shuttles retrieve items and deliver them to goods-to-person pick stations. They are ideal for e-commerce, spare parts, and pharmaceutical operations with many SKUs and frequent small-item picking.

Carousel-Based AS/RS

Carousel systems use rotating shelves or bins to bring items to the operator.

• Vertical carousels rotate vertically and are well-suited for facilities with limited floor space.
• Horizontal carousels rotate horizontally and are often grouped into pods for high-speed order picking.

Both options improve ergonomics and reduce walking time.

Vertical Lift Modules (VLMs)

Vertical Lift Modules store trays in vertical columns and use a central extractor to deliver items to a single access opening. VLMs offer very high storage density, controlled access, and fast, accurate goods-to-person picking for small parts and components.

Shuttle-Based Racking Systems

Shuttle systems use powered carts to move pallets or totes within deep storage lanes. Forklifts load goods at the lane entrance while shuttles handle internal movement. These systems deliver high-density storage, strong throughput, and scalable automation, making them a practical bridge between manual racking and fully automated crane systems.

How to Choose the Right AS/RS

The right AS/RS depends on your inventory type, throughput requirements, space constraints, and growth plans. Start by identifying your biggest operational challenges, whether that’s space, speed, labour, or accuracy. Then, match the system to those needs.

For warehouses that may not be ready to invest in a full unit-load crane AS/RS, shuttle racking offers a step up from static racks with many of the benefits of automation.

Unlock Warehouse Efficiency

At Platform 1, we pride ourselves on being knowledgeable guides in the world of warehouse automation across Canada and the U.S. We understand that investing in an AS/RS is a big decision. One that can transform your business for the better when done right. We’re here to help you navigate the options and tailor a solution that fits your operation.

Ready to explore automated storage solutions for your facility? Contact Platform 1 today.