I am setting up a "server closet". I have not worked with server racks before. I got a server rack free on Craigslist. I am not sure how many "U" it is - it's about 6 feet tall.
I bought two 4U cases and moved my hardware into them.
Now I need to mount the cases into the cabinet. It came with a bunch of these sliding rails that are about 1" tall. I wonder if these are specially for the narrow 1U hardware. I would expect a flat piece of metal that I could screw into the side of my cases. These rails are sort of "U-shaped". The top and bottom edges of the rails extend into the rack maybe 1/8", and the center of the rails are flat against the edge of the rack.
Is it normal for rails to have this kind of shape? If I need to get rails, what is a good vendor online? The prices seem to be way out of proportion to what you get (a thin piece of metal).