I plan on purchasing a 42U rack with wheels on the bottom, to allow it to normally sit in a corner of my hobby room, and plan on giving all the cables extending from it, several feet of slack to allow moving the rack out to facilitate physical maintenance. I currently have a Dell R710 and a home-built 4U server with 24 hard drives in it. These are my two largest/heaviest devices that will go in this rack, but there will be several other smaller items in the rack as well, leaving ample room for growth. My question is whether the weight and distribution on wheels will be stable enough or do I need to put some anchors into studs in the walls that secure the rack there when NOT being physically serviced? I am guessing that for safety purposes, I'll need to put the heavyweight items near the lower portion of the rack with the lightest weight up higher. Any suggestions?