What is a vertical lift storage system (VLM) and how does it work?

A vertical lift storage system, commonly called a Vertical Lift Module (VLM), is an automated storage and retrieval system (AS/RS) that stores inventory in trays arranged vertically within an enclosed unit and automatically delivers requested items to an ergonomic access opening using the goods-to-person principle.

How it works:

  1. Inventory is stored on trays inside a vertical enclosure.
  2. When an operator selects an item via software, an automated extractor retrieves the required tray.
  3. The tray is delivered to an access opening at optimal working height.
  4. The system dynamically stores trays based on item height to maximize space utilization.

Why industries use it?

Vertical lift storage systems dramatically reduce floor space, increase picking accuracy, improve safety, and accelerate order fulfillment.

At Swisso Storage, vertical lift storage systems are engineered for industrial, manufacturing, and warehouse environments, with a focus on space optimization, automation, and long-term reliability.