Setting Up Your Server 3-9Only the inner rails remain screwed to the server when the rail assemblies have been removed.IMPORTANT: The removed rail assemblies are to be installed on theinner rails later. To install each rail assembly on the correct inner rail,make a mark on the assemblies. Similarly, when installing more thanone server, distinguish between the pairs of inner rails and railassemblies of the servers by making marks.Installing the Core NutsInstall three core nuts on the front of the rack for each of the right and left sides and also two corenuts on the rear of the rack for each of the right and left sides.Install three core nuts in 1U (the minimum unit of rack height). Three slots (angle holes) areopened per 1U of a rack. Install the core nuts at the three slots. (For any NEC rack, round marksare put in the unit of 1U.) For one core nut installed on the front of the rack, the lower nut is used tofix the front of the rail assembly, and the upper nut is used to support the set screw of the server.The core nuts installed on the rear of the rack are used to fix the rear of the rail assemblies.Inner rails
