Sun Microsystems Datacenter Switch 3456 Installation Manual

Sun™Datacenter Switch 3456

Installation Guide

Sun Microsystems, Inc. www.sun.com

Part No. 820-4730-11 December 2008, Revision A

Submit comments about this document at: http://www.sun.com/hwdocs/feedback

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Recycle

Preface xi

1. Cautions and Considerations 1

Chassis Weight 1

Moving the Chassis 1

Loading by the Chassis 2

Chassis Activity Dimensions 3

Heat Considerations 3

Air Temperature 3

Surface Temperature 4

Other Objects’ Temperatures 4

Hot and Cold Aisles 4

Electrical Considerations 4

Main Power 4

Bus Power 5

Pin Power 5

2. Partial Configuration 7

Complete and Base Configurations 7

Configuration Considerations 8

iii

Filler Panels 8

Line Card Distribution 8

Power Supplies 8

Component Distribution 9

3. Preparing for Installation 11

Final Location Checklists 11

Power Checklist 11

Network Checklist 12

Cabling Checklists 12

Power Cabling Checklist 12

Network Cabling Checklist 12

Spacing Checklist 12

Loading Checklist 13

Environmental Checklist 13

Personnel Checklist 13

Tools Checklists 13

Installation Tools Checklist 14

Administration Tools Checklist 14

Maintenance Tools Checklist 14

Path to Final Location 15

Security Systems 15

Signage 15

Carpets 15

Grades 16

Elevators 16

Doors 16

Thresholds and Gaps 17

Path 17

iv Sun Datacenter Switch 3456 Installation Guide • December 2008

Surface 17

Turns 17

Receiving Area 18

Equipment 18

Cleanliness 18

Personnel 18

Number of People 19

Tasks and Roles 19

Mindset 20

Safety 20

Methodical Approach 20

Diligent Attitude 21

Installation and Maintenance Tools 21

Standard Tools 21

4. Installation Sequence 23

Installation Sequence 23

5. Unpacking the Chassis 25

Unpacking the Chassis 25

▼ To Remove Shipping Crate Components 26

▼ To Remove the Plastic Envelope 29

▼ To Fit the Ramp 30

▼ To Unsecure the Chassis 31

▼ To Roll Out the Chassis 32

6. Installing the Chassis 35

Installing the Chassis 35

▼ To Move to the Final Location 35

▼ To Level the Chassis 36

Contents v

▼ To Secure the Chassis 39

▼ To Remove the Power Supply Filler Panels 39

▼ To Remove the Line Card Filler Panels 40

▼ To Install the Line Card Filler Panels 41

Inspecting the Chassis 43

▼ To Verify Electrical Leakage 43

▼ To Verify Electrical Continuity 45

7. Inspecting and Repairing Pins 47

Midplane Filler Strips 47

Inspecting Pins 48

Tools 48

▼ To Inspect the Pins on the Rear Side of the Midplane 48

▼ To Inspect the Pins on the Front Side of the Midplane 51

Repairing and Replacing Pins 54

Tools 54

▼ To Remove Pins 54

▼ To Remove a Pin With Needle-Nose Pliers 56

▼ To Insert Pins 57

8. Installing Fabric Cards 59

Fabric Card Considerations 59

Inspecting Fabric Cards 60

▼ To Inspect the Fabric Card iTRAC Connectors 60

▼ To Inspect the Fans 61

▼ To Inspect the Retainers 62

Installing Fabric Cards Into the Chassis 63

▼ To Install the Midplane Stiffener 63

▼ To Install the Fabric Cards 65

vi Sun Datacenter Switch 3456 Installation Guide • December 2008

▼ To Remove the Midplane Stiffener 66

Fabric Card Administrative Commands 68

▼ To Enable Fabric Cards 68

▼ To Disable Fabric Cards 68

▼ To Enable Fabric Card IPMB Buses 69

▼ To Disable Fabric Card IPMB Buses 69

▼ To Enable Fabric Card Standby Power 69

▼ To Disable Fabric Card Standby Power 69

▼ To Fully Power On Fabric Cards 70

▼ To Power Down Fabric Cards to a Standby State 70

▼ To Read Fabric Card FRUID Information 70

9. Installing Line Cards 73

Line Card Considerations 73

Inspecting Line Cards 74

▼ To Inspect the Line Card iTRAC Connectors 74

▼ To Inspect the iPASS Connectors 75

▼ To Inspect the Retainers 76

Installing Line Cards Into the Chassis 77

▼ To Install the Line Cards 77

Line Card Administrative Commands 78

▼ To Enable Line Cards 78

▼ To Disable Line Cards 79

▼ To Enable Line Card IPMB Buses 79

▼ To Disable Line Card IPMB Buses 79

▼ To Enable Line Card Standby Power 79

▼ To Disable Line Card Standby Power 80

▼ To Fully Power On Line Cards 80

▼ To Power Down Line Cards to a Standby State 80

Contents vii

▼ To Read Line Card FRUID Information 81

10. Powering On 83

Installing Power Supplies 83

▼ To Install Power Supplies 83

Preparing Power Supplies 85

▼ To Attach Power Cables 85

Power Supply Administrative Commands 86

▼ To Power On Power Supplies 86

▼ To Power Down Power Supplies 87

▼ To Verify Power Supply Status 87

Working With CMCs 87

Powering On the CMCs 88

▼ To Cable CMCs to the Management Console 88

▼ To Access the CMC From the Serial Management Port 88

▼ To Access the CMC From the Network Management Port 89

▼ To Verify CMC Status 90

Powering On the Sun Datacenter Switch 3456 91

▼ To Power On the Sun Datacenter Switch 3456 91

11. Cabling the Switch 93

Installing Cable Guides 93

▼ To Install Cable Plates 93

▼ To Remove Cable Plates 94

▼ To Install Cable Trees 95

▼ To Remove Cable Trees 96

▼ To Install Cable Trays 97

▼ To Remove Cable Trays 98

Cabling the Switch 98

viii Sun Datacenter Switch 3456 Installation Guide • December 2008

Cable Cautions 99

▼ To Attach Cables to the Sun Datacenter Switch 3456 99

▼ To Remove Cables From the Sun Datacenter Switch 3456 102

▼ To Check Link Status 103

Index 105

Contents ix

x Sun Datacenter Switch 3456 Installation Guide • December 2008

Preface

This installation guide provides comprehensive instructions for installing the Sun Datacenter Switch 3456 switch.

This document is written for service personnel, and users who have advanced knowledge and experience installing and configuring computing machines. Topics include cautions, preparations, unpacking, and installation tasks.

Using UNIX Commands

This document might not contain information about basic UNIX®commands and procedures such as shutting down the system, booting the system, and configuring devices. Refer to the following for this information:

■ Software documentation that you received with your system

■ Solaris™ Operating System documentation, which is at:

http://docs.sun.com

Shell Prompts

Shell Prompt

C shell machine-name%

C shell superuser machine-name#

Bourne shell and Korn shell $

Bourne shell and Korn shell superuser #

Typographic Conventions

Typeface

AaBbCc123 The names of commands, files,

AaBbCc123 What you type, when contrasted

AaBbCc123 Book titles, new words or terms,

* The settings on your browser might differ from these settings.

Meaning Examples

Edit your.login file. and directories; on-screen computer output

with on-screen computer output

words to be emphasized. Replace command-line variables with real names or values.

Use ls -a to list all files.

% You have mail.

% su

Password:

Read Chapter 6 in the User ’s Guide.

These are called class options.

Yo u must be superuser to do this.

To delete a file, type rm filename.

Cautions and Considerations

This chapter describes the challenges in preparing the site and installing the Sun Datacenter Switch 3456. This chapter contains the following topics:

■ “Chassis Weight” on page 1

■ “Chassis Activity Dimensions” on page 3

■ “Heat Considerations” on page 3

■ “Electrical Considerations” on page 4

Note – A hard copy version of the Sun Datacenter Switch 3456 Installation Guide is

shipped inside the switch shipping crate. You can also access the guide at this URL:

http://docs.sun.com/app/docs/prod/switch.3456

Chassis Weight

As shipped, the Sun Datacenter Switch 3456 switch chassis and crate weighs approximately 1800 pounds (820 kg). This section describes the effects and behavior of that much mass.

Moving the Chassis

When moving the chassis from the truck to the unpacking area and to the final location, consider the implications of the chassis weight:

■ Traversing any grade will require additional force and personnel to safely move

the Sun Datacenter Switch 3456.

■ The Sun Datacenter Switch 3456 casters all swivel freely. The chassis responds to

the greater of applied forces. This means that a person pushing on one corner to move the chassis will also cause the chassis to rotate. So at least two people should push equally on adjacent corners to move the Sun Datacenter Switch 3456.

■ When rolling the Sun Datacenter Switch 3456 off of the shipping pallet and down

the shipping ramp, the chassis will catch at the junction of the pallet and ramp, and will have a tendency to rotate. Expect and prepare for this behavior.

■ To accelerate the Sun Datacenter Switch 3456 to a walking speed requires effort,

time, and distance. To stop the Sun Datacenter Switch 3456 from moving requires the same or more. To accelerate, transport, or stop a Sun Datacenter Switch 3456 requires slow methodical movement, a clear and safe path, and sufficient personnel aware of their actions.

Caution – The Sun Datacenter Switch 3456 chassis cannot be safely moved by one

person alone. Never allow any person near the direct path of the Sun Datacenter Switch 3456. Personnel moving the Sun Datacenter Switch 3456 should consciously keep their feet away from the bottom edge of the Sun Datacenter Switch 3456, because this is a pinch point and can cause injury. Personnel moving the Sun Datacenter Switch 3456 should stand to either side of the chassis or behind its direction of motion.

Loading by the Chassis

The Sun Datacenter Switch 3456 can only be located on surfaces that can accommodate its weight. The four casters on the Sun Datacenter Switch 3456 chassis have a total contact area of 8 square inches or a loading of 225 psi. This load should not be of concern, if the surfaces or foundations are concrete or reinforced. Unreinforced wood surfaces cannot support the weight of the Sun Datacenter Switch 3456, and even if only temporary during movement, might flex enough to cause bottoming out.

Carpeted surfaces might not be able to survive the stress of the Sun Datacenter Switch 3456 casters, especially when turning. Additionally, movement over carpet is difficult.

2 Sun Datacenter Switch 3456 Installation Guide • December 2008

Chassis Activity Dimensions

TABLE 1-1 provides Sun Datacenter Switch 3456 chassis dimensions, and the

minimum dimensions needed for unpacking, moving, and the final location.

TABLE 1-1 Approximate Minimum Chassis Activity Dimensions

Item Length Width Height Comment

Sun Datacenter Switch 3456 chassis

Unpacking space 35 ft (10.7 m) 10 ft (3 m) 9 ft (2.7 m) To accommodate rollout

Moving perimeter 15 ft (4.6 m) 10 ft (3 m) 6 ft (1.8 m) For stopping distance and

Installation at final location

Final location 8 ft (2.4 m) 10 ft (3 m) 6 ft (1.8 m) Dimensions outside of

6 ft (1.8 m) 4 ft (1.2 m) 5 ft (1.5 m) Dimensions of chassis.

and crate shell movement

safety margin.

12 ft (3.7 m) 12 ft (3.7 m) 6 ft (1.8 m) To accommodate line card

and fabric card installation.

cable guides, access space only.

Heat Considerations

This section describes the heat output of the Sun Datacenter Switch 3456 and its potential safety hazard for personnel. This section also describes keeping an open area at the exhaust side, and considerations for other systems and equipment in the area.

Air Temperature

The calculated approximate air temperature output of the Sun Datacenter Switch 3456 is 36° F (20°C) hotter than the air going in. While this output temperature is not hot enough to burn, this temperature is sufficient to dehydrate and render useless any cooling device in the vicinity.

Chapter 1 Cautions and Considerations 3

Surface Temperature

During operations, the exhaust surfaces, such as the fans mounted to the fabric cards, are at a higher temperature than the exhaust air. Bear this situation in mind when replacing a failed fan, because its temperature will be even greater.

Other Objects’ Temperatures

No object should be in direct contact with the exhaust air. However, occasional hanging cables or drop lamps might happen to be in the stream. Any objects in the exhaust air stream will be at an elevated temperature because of this exposure.

Hot and Cold Aisles

The heat output of a fully configured Sun Datacenter Switch 3456 is approximately 40 KW. The Sun Datacenter Switch 3456s’s air mass flow is calculated to approximately 3400 cfm (1.6 m switch is 36°F (20°C) degrees hotter than the air going in. As such, the hot aisle for the Sun Datacenter Switch 3456 should be configured to accommodate this heat output and in no way compromise the cooling of other equipment. Do not store any objects in the switch hot aisle. Such objects would interfere with proper air circulation, and might become a safety hazard.

/s), which means that the air exhausted from the

Electrical Considerations

This section describes the voltages present and the exposure to active lines during component installation.

Main Power

Caution – The 16 Sun Datacenter Switch 3456 power supplies require 200 -240 VAC.

Take all precautions normally associated with these voltages.

4 Sun Datacenter Switch 3456 Installation Guide • December 2008

Bus Power

Caution – When servicing the Sun Datacenter Switch 3456, bus power is active. Bus

power is a low voltage, but very high current. Even the smallest form of short circuit can cause physical injury and severe damage to the Sun Datacenter Switch 3456.

Pin Power

Caution – When servicing the Sun Datacenter Switch 3456, pin power and signals

are active. While not a shock or burn threat, there is the possibility of damage to the pin, midplane, fabric card, and line card, should a short or grounding take place. Use all precautions associated with working with active signal conductors when servicing the Sun Datacenter Switch 3456.

Chapter 1 Cautions and Considerations 5

6 Sun Datacenter Switch 3456 Installation Guide • December 2008

CHAPTER

Partial Configuration

This chapter describes configuring the Sun Datacenter Switch 3456 with less than a complete configuration. Topics include:

■ “Complete and Base Configurations” on page 7

■ “Configuration Considerations” on page 8

■ “Component Distribution” on page 9

Complete and Base Configurations

For maximum functionality, the Sun Datacenter Switch 3456 is designed to be operated in a fully configured state:

■ 24 line cards

■ 18 fabric cards

■ 16 power supplies

■ 2 CMCs

If necessary, fewer components can be installed. For example, the base configuration of the switch is:

■ 1 line card

■ 18 fabric cards

■ 6 power supplies

■ 2 CMCs

For the base configuration or a partial configuration, filler panels must be installed where there are empty line card and power supply slots.

Caution – Do not configure the Sun Datacenter Switch 3456 with fewer than 18

fabric cards installed. Thermal requirements will not be satisfied.

Configuration Considerations

Filler Panels

To maintain proper airflow for adequate cooling, filler panels must be installed in vacant line card and power supply slots. Besides directing airflow, the filler panels close openings to the Sun Datacenter Switch 3456 chassis, preventing intrusion of objects and contaminants to the chassis interior.

Line Card Distribution

Line cards are installed from the center out, across the available slots. The vacant slots must have filler panels installed. For example, if only 12 line cards are to be installed, they would occupy slots 6 through 17. Filler panels are installed in the vacant slots (0 through 5 and 18 through 23).

Power Supplies

Power supplies are configured in a need+1 redundancy. A fully configured Sun Datacenter Switch 3456 with 24 line cards and 18 fabric cards needs 14 power supplies. Two power supplies act as redundant, one for each power bus. The power supply slots are hard-wired to two power buses. Power supplies installed in the lower row (PS0, PS1, and so on to PS7), provide power to line card slots 0 to 11 and fabric card slots 9 to 17. Power supplies installed in the upper row (PS8, PS9, and so on to PS15), provide power to line card slots 12 to 23 and fabric card slots 0 to 8.

8 Sun Datacenter Switch 3456 Installation Guide • December 2008

TABLE 2-1 lists the maximum number of line cards that are supported for a given

number of power supplies.

TABLE 2-1 Maximum Quantity of Line Cards for Quantity of Power Supplies

Quantity of Power Supplies Maximum Supported Line Cards

10 10

12 16

14 20

16 24

Component Distribution

If you are configuring less than a complete Sun Datacenter Switch 3456, you can incrementally add and distribute line cards and power supplies to the empty slots in the left-to-right order described by

TABLE 2-2:

TABLE 2-2 Incremental Configuration

1 2 3456789101112131415161718192021222324

Line

Card Slot

Power

Supply

Slots

11 12 10 13 9 14 8 15 7 16 6 17 5 18 4 19 3 20 2 21 1 22 0 23

2, 4, 6, 9,

11, 13

0, 15 7, 8 3, 12 1, 14 5, 10

For example, if you were to configure the switch with only one line card, you would install the line card into slot 11. You would also install power supplies into slots 2, 4, 6, 9, 11, and 13, in that order.

If you were to configure the switch with ten line cards, you would install the line cards into slots 11, 12, 10, 13, 9, 14, 8, 15, 7, and 16, in that order. You would also install power supplies into slots 2, 4, 6, 9, 11, 13, 0, 15, 7, and 8, in that order.

Quantity of Line Cards

Chapter 2 Partial Configuration 9

TABLE 2-3 provides suggested configurations, based upon a fraction of the complete

configuration.

TABLE 2-3 Suggested Configurations

Configuratio n

Quantity of Line Cards Line Card Slots Power Supply Slots

Base 1 11 2, 4, 6, 9, 11, 13

1/8 3 11, 12, 10 2, 4, 6, 9, 11, 13, 0, 15

1/4 6 11, 12, 10, 13, 9, 14 2, 4, 6, 9, 11, 13, 0, 15

3/8 9 11, 12, 10, 13, 9, 14, 8, 15, 7 2, 4, 6, 9, 11, 13, 0, 15, 7, 8

1/2 12 11, 12, 10, 13, 9, 14, 8, 15, 7, 16, 6, 17 2, 4, 6, 9, 11, 13, 0, 15, 7, 8, 3, 12

5/8 15 11, 12, 10, 13, 9, 14, 8, 15, 7, 16, 6, 17, 5, 18, 4 2, 4, 6, 9, 11, 13, 0, 15, 7, 8, 3, 12

3/4 18 11, 12, 10, 13, 9, 14, 8, 15, 7, 16, 6, 17, 5, 18, 4, 19,

2, 4, 6, 9, 11, 13, 0, 15, 7, 8, 3, 12, 1, 14

3, 20

7/8 21 11, 12, 10, 13, 9, 14, 8, 15, 7, 16, 6, 17, 5, 18, 4, 19,

3, 20, 2, 21, 1

2, 4, 6, 9, 11, 13, 0, 15, 7, 8, 3, 12, 1, 14, 5, 10

Because the line cards are equally distributed across the available slots, cabling rules and lengths still apply. See “Cabling the Switch” on page 98 and the Sun Datacenter Switch 3456 Site Planning Guide .

10 Sun Datacenter Switch 3456 Installation Guide • December 2008

CHAPTER

Preparing for Installation

This chapter describes tasks to be accomplished before actually installing the Sun Datacenter Switch 3456. Topics include:

■ “Final Location Checklists” on page 11

■ “Path to Final Location” on page 15

■ “Receiving Area” on page 18

■ “Personnel” on page 18

■ “Installation and Maintenance Tools” on page 21

Final Location Checklists

This section includes a checklist that the installers can use to ensure that they are ready for installation. This checklist covers power, air conditioning, network cabling, spacing, loading, and other topics.

Power Checklist

■ ____ Are correct power cables used?

■ ____ Is power routed through circuit breakers to code?

■ ____ Is power conditioned before the chassis?

■ ____ Is the power turned off?

■ ____ Has a backup solution been implemented?

Network Checklist

■ ____ Has the network topology been determined?

■ ____ Has the blueprint been determined?

■ ____ Has the IB support network been configured?

Cabling Checklists

Power Cabling Checklist

■ ____ Have the cables been routed from facility power to backup, through conduits

to breakers to conditioner to switch?

■ ____ Have the cables been labeled for their respective connections?

■ ____ Have the cables been properly bundled?

■ ____ Have the cables been given enough slack for installation?

■ ____ Have appropriate connectors been fitted?

Network Cabling Checklist

■ ____ Have the cables been routed between IB switches and the Sun Datacenter

Switch 3456?

■ ____ Have the cables been labeled for their respective ports?

■ ____ Have the cables been properly bundled?

■ ____ Have the cables been given enough slack for installation?

Spacing Checklist

■ ____ Has enough work area been cleared for receiving the chassis and

components?

■ ____ Is this area clean?

■ ____ Has enough space been allocated for the path to the final location?

■ ____ Are doors set open?

■ ____ Are doors, hallways, and elevators large enough to accommodate the Sun

Datacenter Switch 3456?

■ ____ Are carpets covered with hard surfaces?

■ ____ Are gaps and thresholds appropriately prepared?

12 Sun Datacenter Switch 3456 Installation Guide • December 2008

■ ____ Is there sufficient spacing at the final location for installation activities?

■ ____ Is there sufficient spacing at the final location for operation and air flow

management?

Loading Checklist

■ ____ Can the final location accommodate the weight of the fully configured

chassis?

■ ____ Can the path to the final location accommodate the weight of the chassis?

■ ____ Have reinforcements to the flooring been installed?

■ ____ Can the elevator accommodate the weight of the chassis?

Environmental Checklist

■ ____ Can the environmental control system support the thermal demands of the

switch?

■ ____ Have additional cooling systems been installed and tested operational?

■ ____ Have the air flow characteristics of the final location been analyzed?

■ ____ Has the air flow management been configured for the Sun Datacenter Switch

3456’s additional heat load?

Personnel Checklist

■ ____ Have the appropriate personnel for installation, administration, and

maintenance been determined?

■ ____ Do the personnel understand their responsibilities?

■ ____ Have the personnel read and understood the Sun Datacenter Switch 3456

documentation respective to their activities?

■ ____ Are the personnel properly equipped for their tasks?

■ ____ Are the personnel available to perform their tasks?

Tools Checklists

Are the tools readily available for installation, administration, and maintenance?

Chapter 3 Preparing for Installation 13

Installation Tools Checklist

■ ____ Socket extension

■ ____ Socket

■ ____ Ratchet

■ ____ Small needlenose pliers

■ ____ Phillips screwdrivers

■ ____ Adjustable wrenches

■ ____ Wire strippers

■ ____ Molex pin repair kit

■ ____ Flashlights

■ ____ Gloves

■ ____ Digital multimeter

■ ____ Beam level

■ ____ Scissors

■ ____ Pocket knife or box cutter

Administration Tools Checklist

■ ____ InfiniBand network subnet manager software stack

■ ____ Host server for software stack

■ ____ Server for CMC interface

■ ____ Serial terminal for CMC interface

Maintenance Tools Checklist

■ ____ Socket extension

■ ____ Socket

■ ____ Ratchet

■ ____ Molex pin repair kit

■ ____ Flashlights

■ ____ Gloves

■ ____ Digital multimeter

14 Sun Datacenter Switch 3456 Installation Guide • December 2008

Path to Final Location

This section address obstructions or hindrances along the route from the unpacking site to the final location.

Security Systems

The path to the final location might need the Sun Datacenter Switch 3456 to move through a secure area. Sensors for intrusion, movement, doors opening, and so on, must be disabled, or else a false alarm might sound.

Consider the impact of the path to the final location on the security of the building. Are the personnel entering or passing through an area that they are not authorized to do so?

Consult with the security services before moving the Sun Datacenter Switch 3456. This way, security is not surprised if intrusion and door alarms are activated. Additionally, security might be able to provide an alternative route that has less impact to building security.

Signage

If the path to the final location has high foot traffic, consider posting signs and providing email informing personnel of the move. This action alerts uninvolved personnel to avoid the path, which eases the movement of the Sun Datacenter Switch 3456 and reduces the possibility of complications or injuries.

Carpets

The Sun Datacenter Switch 3456 chassis will not roll on carpet without great effort. Plan a path to the final location that avoids carpeted areas. If carpeting cannot be avoided, place sheet metal or masonite panels over the carpeting to make the chassis roll more easily.

You do not need to place panels on the entire carpeted path. Use enough to support the chassis and provide the chassis a surface to roll on. For example, if you use 3 ft x 5 ft (0.91 m x 1.52 m) masonite panels, three panels will support the chassis, while a

Chapter 3 Preparing for Installation 15

fourth panel can be laid in front of the chassis in the direction of travel. Once the chassis has rolled off the rear-most panel, lift that panel and move it to the front. Repeat this process down the path over carpeting.

Grades

The Sun Datacenter Switch 3456 chassis weighs 1433 pounds (650 kg) as shipped. Any grade along the path requires additional effort to move the chassis, or prevent the chassis from moving. Do not attempt to move the chassis up or down a grade greater than 3%.

Additionally, the Sun Datacenter Switch 3456 chassis is equipped with antitilt bars that are mounted at the centerline. The presence of the bars limits the clearance movement to 0.5 inch (12 mm). When a chassis peaks a grade of 3% or greater, the antitilt bars bottom out.

Elevators

If the path to the final location requires use of an elevator, ensure that the elevator can safely accommodate the weight of the Sun Datacenter Switch 3456 chassis and the personnel moving it.

The elevator doors must be wide enough to allow the Sun Datacenter Switch 3456 to pass, ideally with personnel alongside. The doors might need to be held open, either physically, or by pressing the door open button within the elevator.

Verify that the threshold at the elevator doors permits the chassis to enter and exit the elevator. The gap between the floor and elevator should not be too large, nor should there be any height difference. Check this gap at both the entering and exiting floors. If there are any minor discrepancies, a metal sheet or masonite panel can be used to compensate.

Doors

Doors must open wide enough to accommodate the Sun Datacenter Switch 3456 chassis and personnel alongside. Additional personnel can hold doors open, or the doors can be securely propped open using wedges or catches. Do not hold doors open with chairs or other easily available objects. Such objects do not guarantee a secure door and can diminish the space for moving the chassis.

16 Sun Datacenter Switch 3456 Installation Guide • December 2008

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