Cable distribution rack (CDR)

Highest packing density for evolving data centers

The CDR (Cable Distribution Rack) is a purpose-built high density fiber management rack which serves as a central cross-connect in the main distribution area of data centers. With a footprint depth of only 300 mm, the CDR is fully modular and scalable up to 1620 ports (3240 fibers) using LC connectivity and 1080 ports (25 920 fibers) using MTP connectivity . Users can benefit from a C-shaped construction where all internal sub-elements are completely installable and accessible from the front side. This important feature means that CDRs can be placed back-to-back on a single floor tile or alternatively against an unused wall for minimal space consumption.

Designed to match your data center
The CDR has been designed to match equipment cabinets in the data center and provide a seamless visual transition from passive racks to active racks. The CDR’s perforated curved doors are the same design as those used on the HUBER+SUHNER equipment cabinet range and the same quality look and feel is echoed across the complete portfolio.

Configured to suit your needs
The CDR is 47U high, 300 mm deep and comes in two standard width dimensions of 900 mm and 1200 mm. The 900 mm version is designed for splicing and MTP-LC furcation trays and the 1200 mm version is intended for patching only, whether it be LC or MTP cable systems.

• Only 300mm deep and completely front-accessible
• Lightweight 2-post design for improved access to cables
• Available as 900 mm or 1200 mm wide variants
• Up to 1620 duplex LC ports per 47U 900mm cabinet
• Up to 1080 MPO ports per 47U 1200mm cabinet
• Integrated cable over-length management
• Perforated doors to match nearby equipment cabinets
• Quick release doors without tools

• Mount against an unused wall or at the end of row or
• Back-to-back mount on a single floor tile of 600 mm
• Large apertures for all cable types, sizes and quantities
• Fast installation of sub-racks from the front side
• Easy mounting of sub-racks with unit position number strips
• Side by side mounting with clear cable routing
The CDR900 rack has integrated patch cord management on the right hand side and can facilitate standard fiber trays for pigtail splicing or MTP-LC furcation. Generally, the 900 mm wide rack is used for 1G and 10G serial transmission where a standard LC connector interface is required.
The CDR1200 is designed as a dedicated «patching rack»
and is configured by adding a 300 mm wide cable over-length rack to the left hand side of a standard 900 mm rack. The CDR 1200 is configured so that an equal amount of cable management is provided on both sides of the rack. The 1200 mm wide rack is better suited for patching applications.
Cable protection
HUBER+SUHNER believe in offering fibers the highest level of protection during installation and service.
Cable fixation
Loose-tube cables from 12 up to 144 fibers require the highest level of protection with the CDR.
Rack floor fixation 
The CDR is only 300mm in depth and therefore care must be taken to ensure that the rack is properly fixed to either the concrete slab or the raised computer floor. HUBER+SUHNER supplies floor fixing kits fixing kits for both of these applications. 
Horizontal routing channel
The horizontal patch cord routing channel is designed for the CDR900 and can be mounted in the upper or lower position of the rack. It protects the patch cords and facilitates side by side and front to back patching.
Additional rack mandrel kit
Front-mountable mandrels improve cable management. They are easily mounted and separate cables and avoid them twisting.
Floor fixation: The CDR is only 300mm in depth and therefore care must be taken to ensure that the rack is properly fixed to either the concrete slab or the raised computer floor. HUBER+SUHNER supply fixing kits for both of these applications so please enquire about what is right for your particular environment.

Top-entry/ bottom entry: If you are sourcing a pre-configured rack fully installed with tray units, it is important to advise us whether you wish to bring cables into the rack from the upper position or lower position. This will allow us to adjust the tray unit positions so that suitable space is left for the cable entry. It will also enable us to adjust the patch cord management section of the rack so that it is optimised for the particular application.

Adjusting the tray unit for different fiber tray applications: The tray unit supplied with the standard data center rack is equipped with a plate on the left hand side to manage either MTP adapters or protective conduit for fusion splicing. In this respect, the plate is flexible for most applications. However, please note that we do have different variations of this plate and in some cases, it may be preferred to use one of the other options (e.g. if 4 x conduits are required per tray or legacy M3K assemblies are fitted).

Conduit for splicing: Generally in the data center, the CDR is used for pre-terminated assemblies such as MTP systems. However, if fusion splicing is required then we advise that a protective conduit is used to prevent the cables loose-tube from kinking. If the loose-tube is a straight type then a solid-walled conduit should be used. However if the loose-tube is twisted, then a slotted conduit will be required. All conduits are supplied on 100m reels but in the case of the slotted conduit, a special tool will be required in order to insert the loose-tube of the cable into the conduit.