At the heart of creating a good vertical desk set up is strong cantilever shelving. The shelves have to support a lot of weight, and you don't want them to feel bouncy or sag over time. Cantilever is a must because you need to be able to move your desk under the computer shelf freely. When we set up our own we looked at a lot of different products, but the best one for the money was by far E-Z Shelving Systems of Kansas. There are several other systems that can do the job, but cost way more than E-Z's utilitarian product.
E-Z Shelving is essentially an industrial shelving system, a robust cantilever structure that was intended to offer more utility by eliminating the posts that get in the way of storage. Offered in stainless, aluminum, powder coated and bare galvanized (best value) it actually has a very clean and spare aesthetic of its own that transcends its utilitarian roots. But those roots still shine through, especially in their low-design content marketing! A few tiny photos on their web site show some cool installations, but its like they don't realize what they have - and I'm sure industrial sales dwarf cool interiors sales by far.
The shelves are available in many standard sizes, depth, and width, but the company also makes custom configurations. There is one essential modification that must be made in order to use the shelves in a vertical desk format. The basic shelf supports have are triangular, to make them strong, however this shape will interfere with a table rolling under the desk height surface. We took ours to a local metal shop and they notched them for us. No doubt this reduces the strength significantly, and voids your warrantee, but they are still way stronger than the job we are putting them too. Worst case scenario? I know they can hold 200lbs of architect reaching for the top shelf.
Our set up began with a 24" deep desk height surface, with the modified brackets. You can get them deeper. Like a 36" deep desk, knock yourself out. But with flat screen monitors and a good mobile table 24" is more than enough for a vertical desk set up. Next shelf up we have an 18" equipment shelf. This holds scanner, printers, hubs, routers, and associated manuals getting them off our desks. Above that we have two 12" deep book shelves, strong enough for anything you can throw at them. Ours have solid row of binders, books, and material samples, and our dead file boxes. At the end of our desk runs the desk height surface is replaced by 3 more 12" bookshelves creating a floor to ceiling shelf run.
and the populated shelving can be seen in our office.