What Actually Belongs in a VLM, and What Doesn’t? – A Webinar

On June 16th, 2026, REB hosted the webinar “What Actually Belongs in a VLM, and What Doesn’t? Real Inventory Comparisons Against Existing Storage Methods” through Modern Materials Handling. If you missed this, below is more information on the webinar along with the recording of it!

Many operations struggle with limited storage space, growing SKU counts, and inefficient picking processes. Companies are often unsure whether a Vertical lift module (VLM) will deliver meaningful operational improvements or if another storage solution would provide greater value.

This webinar addresses those challenges by using actual inventory profiles and storage layouts to evaluate where VLMs create measurable gains in density and efficiency, and where other storage systems may be the better solution.

What You Will Learn / Key Takeaways

• How to identify which inventory profiles are well suited for VLM storage
• How VLMs compare against existing storage methods using real layout and density examples
• Common inventory characteristics that reduce VLM effectiveness
• How storage density, footprint reduction, and labor impacts can be evaluated before implementation
• Which alternative storage systems may be better suited for inventory that is not ideal for a VLM

Questions From Our Viewers

After the webinar the viewers were able to submit questions that they had while watching. Below are some of the great questions that were asked, along with the answers:

Q: If business needs or product sizes change, will a fixed automated machine become an expensive bottleneck?

A: VLM is very versatile. If your product sizes change, we simply use the VLM software to change the parameters of the space needed for the item.

The software allows you to allocate a storage location based on size and weight of items being stored. If your inventory profile changes, the tray can be reconfigured, and the software will aid you in continually optimizing storage locations to accommodate new products.

The VLM changes with your inventory needs. Unlike static racking, there is no permanence to your storage location. If you sell out of widget A you can reassign that space to widget B.  When widget A is received again, you can assign it to any empty space in the VLM.

If you need widget A to stay in a designated location but it’s size changes, you just move a divider or increase the size of a bin.

If you need more space in your VLM, add trays. If you need less, remove trays. Your VLM is a highly configurable storage platform rather than a fixed machine. Typically, they reduce bottlenecks as opposed to creating them.

Finally, no storage system offers infinite flexibility, although the VLM is close. Completely eliminating the need for a VLM after it has been established as part of your inventory system is virtually unheard of, but if it were to happen, the VLM can be removed. If your flooring density can handle a VLM there isn’t a huge structural commitment to owning a VLM.

Q: Is there an effect on the VLM if packaging changes (size/materials)?

A: There is virtually no effect. Because the VLM operates with dynamic tray spacing and because the software makes it easy to reassign space and locations if the packaging changes it is a simple shift in dividers or bins and entering the new location parameters. Simple, configurable, and changeable.

Q: Would a VLM be best for low velocity SKUs based on slotting rules for the total SKU mix? Is there a way to slot slower moving SKUs in the unit?

A: You can order your trays in a way that keeps the slowest moving SKUs at the very top of the unit.  That is going to be the slowest retrieval time. You can follow the same logic to stage your fastest moving inventory to the lower trays for the fastest retrieval time.

Q) How does a VLM impact the receiving and put away process?

A: The receiving and stocking process is simplified when you introduce a VLM, especially if you stock multiple sizes of the same components.

Sprockets, drive chain and drive belt, fasteners, bearings are examples of items that can come in multiple sizes but look very similar. In traditional stocking methods, it’s easy to end up with parts being deposited into the wrong bin or stocking location.

VLM eliminates stocking errors while dramatically increasing the speed at which you can put new inventory away. When your operator tells the VLM it needs to stock an item number, the VLM presents that tray.  The picking bay of the VLM can be equipped with an LED indicator that points to the lane the part is stored in, and a laser pointer points directly to the part’s location.  The machine eliminates the need to search for correct stocking location and instantly pulls your operator’s eye to the correct location for put away.

Q: How does a VLM ensure accurate picking of items from trays?

A: VLM makes it very difficult to mis pick. LED indicator and laser pointer makes stocking and picking almost errorproof.  The operator enters the part number to be stocked/picked and the VLM presents the correct tray & points to the part’s assigned location.  The software and locating accessories makes stocking/picking activities simple and fast. It’s also easy to change the location of any item.  The VLM is designed to adapt to your needs.

Q: What are methods of mitigation of risks if the VLM goes down for extended period?

A: If power is lost, inventory remains secure within the VLM. Most systems provide manufacturer approved recovery procedures if you cannot wait to access the materials until power is restored.

If the system is receiving power and stops there is a better likelihood that it is a result of a software issue than a mechanical issue.  Many vendors can enter the software remotely and reset the system.

It is important to mention that you should never attempt to work on or to enter a VLM unless you have locked out the power.

Optimize Your Facility with REB Storage

Whether your next step is to gather more information or request a quote, consider REB Storage Systems. REB is a highly experienced systems integrator, in business since 1962. REB has 17 in-house project managers and project designers, all highly experienced in the material handling industry. These people know this industry inside and out.

REB is highly knowledgeable and experienced in designing and installing racking and automation systems and will make sure your system is the best fit for your space. We work with you to provide a turnkey system. From design, products procurement, subcontractor management, install, and permitting support, REB handles it all for you.

We’d appreciate the opportunity to help you further, whether that be more information or a quote. Fill in the contact form on this page or call us at (773) 232-2503 to get in touch with a REB representative.