...custom wiring for the entertainment industry...
There are a number of factors to consider when deciding on the best type(s) of racks for your studio.
You need enough rack spaces to fit all of your equipment, and you need access to the back of the racks in order to connect and service your gear.
Additionally, there may be special considerations to address like heat and noise.
If you have a small amount of gear and a lot of desktop space, you might opt for a small rack that sits on top of your desk.
Console desk with built-in rack
If you have a small amount of gear and a limited amount of room, a good choice would be a console desk that has built-in racks underneath and/or on top.
Rolling rack (rack on casters)
Rolling racks are very popular, as they offer easy access to rack backs for installation and service, with the option to then push the racks back against a wall or under a desktop to maximize space in the room. Wiring must be installed with a service loop to accomodate the rack movement, so the rolling rack works best in a small or medium size. A large rack with lots of equipment is likely to have too much wiring to be easily maneuvered.
If your rack location will have plenty of room for access to the rack backs, a stationary rack is appropriate. In permanent commercial installations, racks are generally bolted down to the floor to add seismic stability. Certain racks are made to be bolted together in a row, for additional stability.
In cases where equipment must be mounted in a recessed space with no rear access, it is convenient to use a pullout. This is essentially a rack within a rack; the outer rack is permanently mounted in the space; the inner rack can be pulled forward on a track, and rotated to allow access to the equipment inside.
When fan noise and/or heat is a concern from specific pieces of equipment (such as computers or processors), you may consider mounting them in a quiet rack. This rack has front and rear doors that seal shut, and the interior is lined with soundproofing material. Heat is drawn out by built-in quiet fans, which may be controlled by a thermostat.