Site Preparation

This chapter describes the TSR system equipment location, floor loading requirements, and site preparation procedures.

Location Requirements

The TSR system should be installed in limited access areas, such as dedicated equipment rooms or labs, in accordance with local electrical codes. To ensure that the system operates at maximum efficiency, it is essential that TSR bays be positioned correctly in the appropriate environment.

Guidelines for Placement of Equipment

Follow the guidelines below when determining where to place the TSR system:

• Area must be stable, free of vibration and excessive movement.
  
  
• Area must be free of excess heat, dust, smoke, and electrostatic discharge.
  
  
• Area must provide sufficient lighting, permit easy access, and allow sufficient space for servicing from both the front and rear of the system. This would require 36-48 inches in front and 24 or more inches in the rear.
  
  
• Area of system floor space must not be blocked by equipment cabling or other obstructions, including blockages under the raised floor.
  
  
• All doorways, corridors, and elevators along the route to the installation floor must be able to accommodate the TSR bay dimensions and weight. Refer to Table 3-1.
  
  
• Freight elevators are recommended for moving TSR system equipment bays from the receiving area to upper or lower level floors.
  
  

TSR Bay Dimensions, Weights, and Floor Loading

The TSR bay design accommodates a standard central office environments that generally provides raised subflooring, with a clearance of either 305 mm (12 in.) or 457 mm (18 in.) and a sub-floor cable management system and/or non-raised concrete floors.

Figure 3-1 provides floor loading specifications for TSR system equipment bays.

Table 3-1. TSR Bay Dimensions and Weights 

Specification	Description
Free Standing Bay
Height	2178 mm	(85.8 in.)
Width (with side panels)	660 mm	(26 in.)
Width (without side panels)	592 mm	(23.3 in.)
Depth	902 mm	(35.5 in.)
Weight (empty bay)	379 kg	(836 lb)
Weight (maximum configuration)	635 kg	(1400 lb)
Bay Weight As Shipped (Includes 36 filler modules and 2 cooling modules)
Weight	515 kg	(1163 lb)
Bay Fully Crated on Pallet
Height	2407 mm	(94.8 in.)
Width	1016 mm	(40 in.)
Depth	1187 mm	(46.8 in.)
Weight	667 kg	(1470 lb)
Bay Uncrated and On Pallet (sides and top removed)
Height	2337 mm	(92 in.)
Width (pallet)	1016 mm	(40 in.)
Depth (pallet)	1187 mm	(46.8 in.)
Weight	573 kg	(1264 lb)
Bay on Installation Dollies
Height (1/2-inch floor clearance)	2191 mm	(86.3 in.)
Width (dolly)	813 mm	(32 in.)
Depth (dolly front & rear)	1702 mm	(67 in.)
Weight	593 kg	(1307 lb)

Table 3-2. Individual Component Weights

Module/Dolly	Description
Controller Module	1.4 kg	(3 lb)
Cooling Module	7.3 kg	(16 lb)
Custom Dolly	33 kg	(72 lb)
Filler Module	3.7 kg	(8.2 lb)
Router Module	5.9 kg	(13 lb)
Server Module	7.3 kg	(16 lb)

Floor Loading

The TSR Bay in the maximum configuration produces the following floor loading. First the distributed load is calculated per Bellcore GR-63-CORE and NEBS Requirement, which is for the floor area of a rectangle bounded by the bay sides (without side panels) and the center line of the minimum front (1219 mm or 48 in.) and rear (609 mm or 24 in.) aisles. The second is the concentrated load, calculated for the area of the bay frame (592 mm by 638 mm or 23.3 in. by 25.1 in.).

Distributed Load	586 kg/m2 (120 lb/ft2)
Concentrated Load	1684 kg/m2 (345 lb/ft2)

Figure 3-1 shows the dimensions of the TSR bay.

Figure 3-1. TSR Bay Dimensions

Figure 3-2 shows the TSR bay footprint.

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Figure 3-2. TSR Frame Footprint

Preparing an Equipment Layout

Contact your site planner to assist you in determining your current and future TSR system spacial needs. Work with your site planner to create a written floor plan for all of your planned TSR system equipment installations.

NOTE When developing your floor plan for the TSR system consider the future growth of the system. Floor level requirements must be considered to ensure level side-to-side interconnections of the TSR bays.

Expanding your TSR system will be easier if you plan ahead and provide space for additional units. Contact customer service for floor level requirements. See "Support Services" in the Preface for Avici Customer Service contact information.

Consider the following when planning your TSR system equipment layout:

• The TSR Bay is installed in an equipment aisle or lineup that supports multiple bays in two back-to-back rows of interconnecting bays (2 bays, 4 bays, etc.).
  
  
• A single TSR bay (with side panels) is approximately 660 mm (26 in.) wide x 902 mm (35.5 in.) deep by 2178 mm (85.8 in.) high.
  
  
• Side-to-side bay interconnection requires permanent removal of the side panel located on the interconnecting side. Each subsequent TSR bay (interconnection) adds only 592 mm (23.3 in.) of width to the configuration.
  
  
• Multiple side-to-side TSR systems must be installed on a level plane to ensure proper operation. Floor level variations of .125 in. per linear foot in side-to-side bay interconnections are acceptable. If floor level variations exceed this requirement, contact Customer Service. See "Support Services" in the Preface for Avici Customer Service contact information.
  
  
• Multiple TSR bays are arranged in two back-to-back rows.
  
  
• Rear access aisle requires a clearance of 610 mm to 762 mm (24 in. to 30 in.) for installation and routine maintenance (replacement/cleaning of air filters). Refer to Figure 3-3.
  
  
• Front access aisle requires a clearance of 1219 mm (48 in.) for installation and removal of the cooling modules and bay controller modules. The bay controller module is 572 mm (22.5 in.) long.
  
  
• For raised floor installation of a bay, all areas of the concrete floor directly below the bay must be unobstructed in order to mount the pedestal beneath the raised floor.
  
  
• The TSR bay may also be mounted directly to the raised floor without a custom pedestal. For this type of installation, the raised floor system must have adequate load capacity to support the full weight of the TSR. Contact Customer Service to help conduct an engineering survey of the raised flooring.
  
  
• Signal cables interconnect the backplanes of adjacent bays from the rear.
  
  
• Signal cables interconnect over-the-top of the 610 - 762 mm (24 -30 in.) rear aisle from each front row bay to its opposing bay in the back row. Locate the signal cables a minimum of 1956 mm (77 in.) above the floor.
  
  
• A fiber management frame is recommended to handle slack fiber and connectivity to interfacing fiber equipment.
  
  
• Each TSR bay is 2178 mm (85.8 in.) high, therefore ensure that there is sufficient space above the bay for the ceiling cable distribution system (if applicable) and aisle lighting.
  
  

  NOTE To avoid impeding the flow of cooling air from being exhausted from the top of TSR bays, ensure all overhead cables or cable management trays are off to the side and not directly above bays.

• If possible, cabling routed to the TSR system should make a 90 degree approach to the TSR system cabinet. This method of cable layout will minimize trunk damage in the event of a fire.
  
  

It is necessary to have sufficient front and rear equipment access for service and maintenance. Figure 3-3 shows a typical TSR bay configuration lineup.

Figure 3-3. TSR Bay Lineup

Fiber Management

Fiber management for the TSR system can be handled in one of two methods. Cabling can be run either from above the bay or under a raised floor.

If the cables runs are overhead, room must be made available for cabling troughs running perpendicular to a lineup of TSR bays. If the cables are run parallel to the lineup, the cable troughs must be between the two bay lineups or to the front or back of the lineup. Running the cable troughs in a straight row above a TSR system lineup could cause eventual damage to bundles of cable due to the heat dissipation through the top of the bay. Refer to Figure 3-4 and Figure 3-5.

Figure 3-4. Perpendicular Cable Trough Management

Figure 3-5. Parallel Cable Trough Management

If the cables are run below a raised floor, they must also be directed in the front of the row of bays. The weight of a TSR system must be directly supported by the underlying concrete flooring. Therefore, there is no space directly under a TSR system lineup to route cables.

Anchoring Requirements

At 635 kg (1400 lb) fully loaded, the TSR system requires sufficient anchoring to maintain fault tolerance through earthquakes and to ensure against tipping.

Upon determination of a location for the TSR system, the appropriate installation kit can be ordered.

Figure 3-6 shows the anchor used to secure TSR bays to the floor.

Figure 3-6. Anchor

The Terabit Switch Router Install Guide provides steps for installing the anchors.

There are three installation procedures for a TSR. You will need to determine the procedure for the type of floor in your installation area:

• Anchoring to a concrete floor
  
  
• Anchoring to a raised floor with a pedestal
  
  
• Anchoring to a raised floor without a pedestal
  
  

For raised floor installations, there are two standard size pedestals to raise the TSR bay to floor level, a 457 mm (18 in.) pedestal and a 305 mm (12 in.) pedestal. If a different height pedestal is needed, contact Avici Customer Service. See "Support Services" in the Preface for Avici Customer Service contact information. Figure 3-7 shows dimensions for the standard pedestals.

Figure 3-7. Pedestal Dimensions

Recommended Spare Parts

We recommend ordering spare units to reduce replacement time on site. These spare parts might include spare servers, control module, cooling module, and air filters.

Copyright © 2001 Avici Systems Inc.
Avici® and TSR® are registered trademarks of Avici Systems Inc.
IPriori™ is a trademark of Avici Systems Inc.

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