When planning a network infrastructure, starting with a solid cable management solution is crucial. A typical setup features a two-post rack with vertical cabling sections along both sides. These sections provide a structured pathway for premise cables and patch cords.
For multiple rack bays, the cabling sections in between adjacent racks must be larger—wider and/or deeper—to accommodate cables from both racks.
Two-Post vs. Four-Post Racks: Which is Right for You?
- provide the most cost-effective and efficient use of floor space
- are superior when supporting larger equipment, like modular network switches.
Chatsworth Products (CPI) offers three styles of two-post racks, six styles of four-post racks and five styles of vertical cabling section in various sizes.
Vertical Cabling Managers: Flexible Options for Organized Pathways
CPI’s are designed to complement both two-post and four-post racks. These attach to the sides of racks, offering an efficient space for cable management.
- Single-Sided Cabling Sections: Perfect for basic setups.
- Double-Sided Cabling Sections: Ideal for racks supporting patch panels, fiber enclosures, or mixed-use equipment. These provide separate pathways for front and rear cabling.
Cable Runway: Overhead Pathways for Premise Cables
Use a or cable tray to create a pathway for premise cables through the room. Premise cables typically enter the cabling sections from overhead cable runway (ladder rack) or cable tray. Be sure to provide radius drops where cable enters or exits the overhead pathway. Also, elevate cable runway 3" to 6" (80 mm to 150 mm) above racks to get the full benefit of the radius drop.
Cable runway or cable tray can be supported from the tops of racks with elevation kits or from the ceiling with threaded rods. Cable runway or cable tray can also be divided to allow cable segregation by media or use/application and tiered to increase capacity.
When selecting a rack solution, it is important to pick a height that provides enough overhead space for cable runway or cable trays. Always leave 3” to 6” (80 mm to 150 mm) of space between the top of racks and cable runway. Leave 12” (300 mm) between each tier of cable runway and 18” (460 mm) between the ceiling and the top tier of cable runway.
Horizontal Cable Management: Keep Patch Cords in Check
Use jumper trays and on the racks in between patch panels and network switches (as shown below) to guide patch cords between connections. Use cable spools inside the cabling sections to control patch cord slack. Loosely bundle cables with CPI’s Saf-T-Grip® Cable Management Straps.
Cable Fill Capacity: Avoid Overcrowding
Proper cable fill capacity is essential for maintaining performance and longevity. Cabling manager width and the corresponding cable fill capacity must be carefully considered, especially when a cabling section is shared in-between adjacent racks.
CPI recommends using a 50% cable fill rule when selecting vertical and horizontal cable management. This allows sufficient space for maintaining cable bend radius for patch cords. For angled-face patch panels, CPI’s Extended Fingers (-EFX) versions are recommended.
to compare cable fill values and select the correct size cabling section.
Learn More About CPI Cable Management
For an in-depth guide to CPI’s cable management solutions,
