I'm wondering is it good idea to leave some sort of slack or a small loop on cable runs to the switch/servers or patch panels so you can either reterminate connections if needed or move stuff around?
Any pictures? All the pictures I've searched are perfectly 0 slack at all. Should I just put like a half circle of slack or a full 0.5ft radius loop? I currently have it in loops but it's sorta messy so I want to redo my rack.always always leave enough slack to be able pull the server through the rack forward if it's on rails. Less cables you have to pull out and put back in especially if you have bonded networking in place. This may cause you to leave the smidge of a bigger cable loop but it's worth it.
Use velcro for everything not zip ties, never zip ties, F*** zip TIES!!! Zip ties are the spawn of the devil, perfect for equipment that never changes (Audio speaker runs, car projects, hanging things) never for server/computer equipment in a rack.