Extreme Networks BlackDiamond 10808 User manual

Extreme Networks, Inc.
3585 Monroe Street
Santa Clara, California 95051
( 08) 579-2800
[phone]
http://www.extremenetworks.com
Extreme Networks Consolidated XOS
Hardware Installation Guide
Published: April, 2005
Part number: 100172-00 Rev. 02

Extreme Networks Consolidated XOS Hardware Installation Guide 2
Alpine, Altitude, Aspen, BlackDiamond, EPICenter, Ethernet Everywhere, Extreme Ethernet Everywhere, Extreme
Networks, Extreme Turbodrive, Extreme Velocity, ExtremeWare, ExtremeWorks, GlobalPx Content Director, the Go
Purple Extreme Solution Partners Logo, ServiceWatch, Summit, the Summit7i Logo, and the Color Purple, among
others, are trademarks or registered trademarks of Extreme Networks, Inc. or its subsidiaries in the United States
and other countries. Other names and marks may be the property of their respective owners.
© 2005 Extreme Networks, Inc. All Rights Reserved.
Specifications are subject to change without notice.
For safety compliance information, see Appendix A.

Extreme Networks Consolidated XOS Hardware Installation Guide 3
Table of Contents
Preface...........................................................................................................................................
Introduction ...............................................................................................................................9
Conventions..............................................................................................................................10
Related Publications .................................................................................................................11
Part 1: Site Preparation
Chapter 1: Site Preparation............................................................................................................ 15
Planning Your Site ....................................................................................................................16
Step 1: Meeting Site Requirements.......................................................................................16
Step 2: Evaluating and Meeting Cable Requirements ..............................................................16
Step 3: Meeting Power Requirements....................................................................................16
Meeting Site Requirements ........................................................................................................16
Operating Environment Requirements ...................................................................................17
Building and Electrical Codes.........................................................................................17
Wiring Closet Considerations ..........................................................................................18
Temperature .................................................................................................................18
Spacing Requirements ...................................................................................................19
Airflow Requirements ....................................................................................................19
Electrostatic Discharge ..................................................................................................21
Humidity ......................................................................................................................21
Rack Specifications and Recommendations ...........................................................................21
Mechanical Recommendations for the Rack .....................................................................22
Protective Grounding for the Rack...................................................................................22
Space Requirements for the Rack ...................................................................................22
Securing the Rack .........................................................................................................23
Evaluating and Meeting Cable Requirements ...............................................................................2
Cabling Standards ...............................................................................................................2
Cable Labeling and Record Keeping ......................................................................................2
Installing Cable...................................................................................................................25
Fiber Optic Cable ..........................................................................................................26
Cable Distances ............................................................................................................27
RJ- 5 Connector Jackets .....................................................................................................28
Radio Frequency Interference...............................................................................................28
Making Network Interface Cable Connections.........................................................................29
Meeting Power Requirements .....................................................................................................29
LAN Systems ......................................................................................................................29
PoE Devices .......................................................................................................................30
Power Supply Requirements .................................................................................................30
AC Power Cable Requirements..............................................................................................30
Replacing the Power Cable.............................................................................................31
Uninterruptible Power Supply Requirements ..........................................................................31
UPS Features................................................................................................................31
Selecting a UPS ............................................................................................................31
Calculating Amperage Requirements ...............................................................................32

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Extreme Networks Consolidated XOS Hardware Installation Guide 4
UPS Transition Time .....................................................................................................32
Applicable Industry Standards ....................................................................................................32
Chapter 2: Initial Management Access ........................................................................................... 33
Connecting Equipment to the Console Port ..................................................................................33
Logging In for the First Time ......................................................................................................35
Part 2: Common Characteristics
Chapter 3: Overview ...................................................................................................................... 3
Supported Features ...................................................................................................................39
Full-Duplex Support ..................................................................................................................39
Management Ports .................................................................................................................... 0
Mini-GBIC Type and Hardware/Software Support .......................................................................... 0
Mini-GBIC Types and Specifications ..................................................................................... 0
Preparing to Install or Replace a Mini-GBIC ........................................................................... 2
Installing and Removing a Mini-GBIC .................................................................................... 2
Installing and Removing a XENPAK Module................................................................................. 3
External Compact Flash Memory Card ......................................................................................... 5
Supported External Compact Flash Memory Cards .................................................................. 5
Installing an External Compact Flash Memory Card................................................................. 6
Removing an External Memory Card ...................................................................................... 7
Chapter 4: Extreme Networks 700/1200 W AC Power Supply Units .................................................. 4
Overview .................................................................................................................................. 9
Pre-Installation Requirements .................................................................................................... 9
Installing the 700/1200 W AC PSU ............................................................................................50
Removing the 700/1200 W AC PSU ...........................................................................................50
Specifications...........................................................................................................................51
Front Panel.........................................................................................................................52
Power Supply Controller Overview (BlackDiamond 10K Series Switch Only) ....................................5
Pre-Installation Requirements ....................................................................................................55
Installing the Power Supply Controllers .......................................................................................55
Verifying a Successful Installation ..............................................................................................55
Power Supply Cords.............................................................................................................56
Fuse ..................................................................................................................................56
Operating Conditions ...........................................................................................................56
Part 3: BlackDiamond 10K Series Switch
Chapter 5: BlackDiamond 10K System Chassis ............................................................................... 5
BlackDiamond 10K System Chassis Architecture .........................................................................59
BlackDiamond 10K System Chassis Front View ......................................................................59
BlackDiamond 10K System Chassis Rear View .......................................................................61
Power Socket ......................................................................................................................62
Installing the Chassis ................................................................................................................62
Unpacking the Chassis ........................................................................................................62
Before you Begin...........................................................................................................62

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Extreme Networks Consolidated XOS Hardware Installation Guide 5
Removing the Accessories Box and Preparing the Rack .....................................................6
Removing the Chassis from the Carton ............................................................................66
Standard Rack Installation ...................................................................................................69
Mid-Mount Rack Installation ................................................................................................70
Grounding the BlackDiamond 10K Series Switch ...................................................................72
Installing the BlackDiamond Cable Manager ................................................................................72
Chapter 6: BlackDiamond 10K Series Management Switch Module .................................................. 77
Overview of MSMs.....................................................................................................................77
MSM Activity ......................................................................................................................79
MSM LEDs .........................................................................................................................79
Installing and Removing MSMs ..................................................................................................80
Installing the MSM..............................................................................................................80
Verifying the MSM Installation..............................................................................................82
Removing an MSM ..............................................................................................................83
Chapter 7: BlackDiamond 10K Series I/O Modules .......................................................................... 85
I/O Modules Overview ................................................................................................................85
G60T Module .....................................................................................................................86
G60T LEDs...................................................................................................................86
G60X Module .....................................................................................................................87
Mini-GBIC Ports ............................................................................................................87
G60X LEDs...................................................................................................................88
G20X Module .....................................................................................................................89
Mini-GBIC Ports ............................................................................................................89
G20X LEDs...................................................................................................................90
10G6X Module ...................................................................................................................91
10G6X LEDs.................................................................................................................91
10G2X Module ...................................................................................................................92
10G2X LEDs.................................................................................................................92
I/O Module LEDs.......................................................................................................................93
Installing I/O Modules ...............................................................................................................93
Verifying the I/O Module Installation ...........................................................................................96
LED Indicators ....................................................................................................................96
Displaying Slot Status Information ........................................................................................96
Removing I/O Modules...............................................................................................................96
Installing a Blank Front Panel ....................................................................................................97
Chapter 8: BlackDiamond 10K Series Switch Fan Tray and Filter .....................................................
BlackDiamond 10K Series Switch Fan Tray .................................................................................99
Removing the BlackDiamond 10K Series Fan Tray .....................................................................100
Installing the BlackDiamond 10K Series Fan Tray ......................................................................101
Replacing the BlackDiamond 10K Series Filter ..........................................................................102
Part 4: BlackDiamond 8810 Switch
Chapter : BlackDiamond 8810 Chassis....................................................................................... 105
BlackDiamond 8810 Chassis Architecture .................................................................................105
BlackDiamond 8810 Chassis Front View..............................................................................105

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Extreme Networks Consolidated XOS Hardware Installation Guide 6
BlackDiamond 8810 Chassis Rear View ..............................................................................107
Uncrating and Unpacking the BlackDiamond 8810 Chassis ........................................................108
Pre-Installation Requirements ..................................................................................................111
Assembling the BlackDiamond 8810 Mid-Mount Kit ..................................................................111
Rack Mounting the BlackDiamond 8810 Chassis .......................................................................112
Re-crating and Re-packing the BlackDiamond 8810 Chassis.......................................................113
Chapter 10: BlackDiamond 8810 MSM and I/O Modules................................................................ 117
MSM Module ..........................................................................................................................117
Overview...........................................................................................................................117
Slots for the BlackDiamond 8810 MSM ..............................................................................119
Data Ports on the G8X MSM...............................................................................................119
MSM Activity ....................................................................................................................119
MSM LEDs .............................................................................................................................120
I/O Modules............................................................................................................................121
G2 X Module ...................................................................................................................122
Mini-GBIC Ports ..........................................................................................................122
G2 X LEDs.................................................................................................................123
10G X Module .................................................................................................................12
10G X LEDs...............................................................................................................12
G 8T Module ...................................................................................................................125
G 8T LEDs.................................................................................................................125
G 8P Module ...................................................................................................................126
G 8P LEDs.................................................................................................................126
I/O Module LEDs.....................................................................................................................127
Module LEDs ....................................................................................................................127
Port LEDs.........................................................................................................................127
G2 X, 10G X, and G 8T Port LEDs..............................................................................127
G 8P Port LEDs..........................................................................................................127
Installing BlackDiamond 8810 MSM and I/O Modules ................................................................128
Pre-Installation Requirements ............................................................................................128
Distinguishing a BlackDiamond 8810 MSM from an I/O Module ............................................129
Installing a BlackDiamond 8810 MSM or I/O Module ...........................................................130
Removing a BlackDiamond 8810 MSM or I/O Module...........................................................132
Installing BlackDiamond 8810 Blank Front Panels.....................................................................13
Pre-Installation Requirements ............................................................................................13
Removing a BlackDiamond 8810 Blank Front Panel .............................................................135
Installing a BlackDiamond 8810 Blank Front Panel..............................................................136
Chapter 11: BlackDiamond 8810 Fan Tray.................................................................................... 137
Overview ................................................................................................................................137
Pre-Installation Requirements ..................................................................................................137
Removing the BlackDiamond 8810 Fan Tray .............................................................................138
Installing the BlackDiamond 8810 Spare Fan Tray.....................................................................139
Removing a BlackDiamond 8810 PSU/Fan Controller .................................................................1 0
Installing a BlackDiamond 8810 Spare PSU/Fan Controller.........................................................1 2
Chapter 12: BlackDiamond 8810 AC Power Cord Retaining Bracket ............................................... 143
Overview ................................................................................................................................1 3

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Extreme Networks Consolidated XOS Hardware Installation Guide 7
Pre-Installation Requirements ..................................................................................................1 3
Installing the BlackDiamond 8810 AC Power Cord Retaining Bracket...........................................1
Removing the BlackDiamond 8810 AC Power Cord Retaining Bracket ..........................................1 6
Part 5: Summit X450 Switch
Chapter 13: Summit X450 Chassis ............................................................................................... 14
Summit X 50 Chassis Architecture...........................................................................................1 9
Summit X 50-2 t and X 50-2 x Front Views......................................................................150
Summit X 50-2 t and X 50-2 x Rear View ........................................................................151
Summit X 50-2 t and X 50-2 x Switch LEDs ..........................................................................152
Summit X 50-2 t and X 50-2 x Switch Installation .................................................................153
Installing the Summit X 50-2 t or X 50-2 x Switch ...........................................................153
Rack Mounting the Summit X 50-2 t or X 50-2 x Switch ...................................................153
Removing the Summit X 50-2 t or X 50-2 x Switch from a Rack ........................................15
Free Standing and Desktop Mounting of Multiple Switches....................................................15
Chapter 14: Summit X450 XEN Card............................................................................................ 155
Overview ................................................................................................................................155
Supported ZR XENPAK Combinations .................................................................................156
Minimum Software Required ....................................................................................................156
Installing the Summit XGM-2xn Card ........................................................................................156
Installing XENPAK Optical Transceiver Modules .........................................................................158
Removing a XENPAK Module ...................................................................................................159
Chapter 15: Summit X450 External Power System......................................................................... 161
Overview ................................................................................................................................161
Installing the External Power System.........................................................................................163
Rack Mounting the EPS-T ..................................................................................................163
Connecting the EPS-160 Power Supply ...............................................................................16
Installing an EPS-160 Power Supply into the EPS-T...................................................................165
Removing an EPS-160 from the EPS-T .....................................................................................166
Part 6: Appendixes
Appendix A: Safety Information .................................................................................................... 16
General Information ................................................................................................................169
Power Supply Units .................................................................................................................170
Meeting Power Requirements ...................................................................................................170
LAN Systems ....................................................................................................................170
PoE Devices .....................................................................................................................171
Power Supply Requirements ...............................................................................................171
Uninterruptible Power Supply Requirements ........................................................................171
UPS Features..............................................................................................................171
Calculating Amperage Requirements .............................................................................172
UPS Transition Time ...................................................................................................172
Power Cable - Power Supply Cords ............................................................................................172
Fiber Optic Ports - Optical Safety..............................................................................................173

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Extreme Networks Consolidated XOS Hardware Installation Guide 8
Appendix B: Technical Specifications .......................................................................................... 175
Index.......................................................................................................................................... 17

Extreme Networks Consolidated XOS Hardware Installation Guide 9
Preface
This preface provides an overview of this guide, describes guide conventions, and lists other
publications that might be useful.
WARNING!
Read the safety information in Appendix A thoroughly before installing any Extreme Networks switch. Failure to
follow this safety information can lead to personal injury or damage to the equipment.
WARNING!
Service to all equipment should be performed by trained and qualified service personnel only! Before installing or
removing any components of the system, or before carrying out any maintenance procedures, you must read the
safety information provided in Appendix A of this guide.
Introduction
This guide provides the required information to install an Extreme Networks® BlackDiamond®10K
series, BlackDiamond 8810 (formerly Aspen 8810), or Summit®X450 switch. It also contains information
about site location, switch functionality, and switch operation.
This guide is intended for use by network administrators responsible for installing and setting up
network equipment. It assumes a basic working knowledge of:
●Local area networks (LANs)
●Ethernet concepts
●Ethernet switching and bridging concepts
●Routing concepts
●Simple Network Management Protocol (SNMP)
See the ExtremeWare XOS Concepts Guide and the ExtremeWare XOS Command Reference Guide for
information about configuring an Extreme Networks BlackDiamond 10K series, BlackDiamond 8810, or
Summit X450 switch.
NOTE
If the information in the release notes that shipped with your Extreme etworks switch differs from the information
in this guide, follow the release notes.

Preface
Extreme Networks Consolidated XOS Hardware Installation Guide 10
Conventions
Table 1 and Table 2 list conventions used throughout this guide.
Table 1: Notice icons
Icon Notice Type Alerts you to...
Note Important features or instructions.
Caution Risk of personal injury, system damage, or loss of data.
Warning Risk of severe personal injury.
Table 2: Text conventions
Convention Description
Screen displays This typeface represents information as it appears on the screen,
or command syntax.
The words “enter”
and “type”
When you see the word “enter” in this guide, you must type
something, and then press the Return or Enter key. Do not press
the Return or Enter key when an instruction simply says “type.”
[Key] names Key names appear in text in one of two ways:
• Referenced by their labels, such as “the Return key” or “the
Escape key”
• Written with brackets, such as [Return] or [Esc]
If you must press two or more keys simultaneously, the key names
are linked with a plus sign (+). Example:
Press [Ctrl]+[Alt]+[Del].
Words in italicized type Italics emphasize a point of information or denote new terms at
the place where they are defined in the text.

Related Publications
Extreme Networks Consolidated XOS Hardware Installation Guide 11
Related Publications
The Extreme Networks XOS switch documentation set includes:
●ExtremeWare XOS Concepts Guide
●ExtremeWare XOS Command Reference Guide
●ExtremeWare XOS Release Notes
Documentation for Extreme Networks products is available from the Extreme Networks website at the
following location:
http://www.extremenetworks.com/services/documentation
You can select and download the following Extreme Networks documentation from the Documentation
Overview page:
●Software User Guides
●Hardware User Guides
You can find archived user guides for software at:
http://www.extremenetworks.com/services/documentation/swuserguides.asp
You can also find archived isntallation guides for hardware at:
http://www.extremenetworks.com/services/documentation/hwuserguides.asp

Preface
Extreme Networks Consolidated XOS Hardware Installation Guide 12

1Site Preparation

Extreme Networks Consolidated XOS Hardware Installation Guide 15
1Site Preparation
This chapter describes:
●Planning Your Site on page 16
●Meeting Site Requirements on page 16
●Evaluating and Meeting Cable Requirements on page 24
●Meeting Power Requirements on page 29
●Applicable Industry Standards on page 32
The requirements described in this chapter are intended for the system administrator, network
equipment technician, or network manager responsible for installing and managing the network
hardware. It assumes a working knowledge of local area network (LAN) operations, and a familiarity
with communications protocols that are used on interconnected LANs. Installation, maintenance, and
removal of a switch, chassis, or its components must be done by qualified service personnel only.
Qualified service personnel have had appropriate technical training and experience that is necessary to
be aware of the hazards to which they are exposed when performing a task and of measures to
minimize the danger to themselves or other people.
By carefully planning your site, you can maximize the performance of your existing network and
ensure that it is ready to migrate to future networking technologies.
To learn more about safety issues and to ensure safety compliance, see Appendix A.
WARNING!
Service to all equipment should be performed by trained and qualified service personnel only! Before installing or
removing any components of the system, or before carrying out any maintenance procedures, you must read the
safety information provided in Appendix A of this guide.

Site Preparation
Extreme Networks Consolidated XOS Hardware Installation Guide 16
Planning Your Site
To install your equipment successfully, you should plan your site carefully. The site planning process
has three major steps:
●Step 1: Meeting Site Requirements
●Step 2: Evaluating and Meeting Cable Requirements
●Step 3: Meeting Power Requirements
Step 1: Meeting Site Requirements
Your physical installation site must meet the following requirements for a safe and successful
installation:
●Building and electrical code requirements
●Environmental, safety, and thermal requirements for the equipment you plan to install
●Distribution rack requirements
Step 2: Evaluating and Meeting Cable Requirements
After examining your physical site and ensuring all environment requirements are met, evaluate and
compare your existing cable plant with the requirements of the Extreme Networks equipment to
determine if you need to install new cables (or cabling).
Step 3: Meeting Power Requirements
To run your equipment safely, you must meet the specific power requirements for each power supply
unit installed within the system.
Meeting Site Requirements
This section addresses the various requirements to consider when preparing your installation site,
including:
●Operating Environment Requirements
●Rack Specifications and Recommendations

Meeting Site Requirements
Extreme Networks Consolidated XOS Hardware Installation Guide 17
Operating Environment Requirements
You need to verify that your site meets all environmental and safety requirements.
Virtually all areas of the United States are regulated by building codes and standards. During the early
planning stages of installing or modifying your LAN, it is important that you develop a thorough
understanding of the regulations that pertain to your location and industry.
Building and Electrical Codes
Building and electrical codes vary depending on your location. Comply with all code specifications
when planning your site and installing cable. The following sections are provided as a resource to
obtain additional information.
Information on major building codes is located at the following websites:
●International Code Council (ICC); 5203 Leesburg Pike; Falls Church, Virginia 22041 USA.
http://www.iccsafe.org
http://www.sbcci.org
Five authorities on electrical codes are:
●National Electrical Code (NEC) Classification (USA only)—a recognized authority on safe electrical
wiring. Federal, state, and local governments use NEC standards to establish their own laws,
ordinances, and codes on wiring specifications. The NEC classification is published by the National
Fire Protection Association (NFPA). The address is NFPA; 1 Batterymarch Park; Quincy,
Massachusetts 02169 USA. http://www.nfpa.org
●Underwriters’ Laboratory (UL) (USA only)—an independent research and testing laboratory. UL
evaluates the performance and capability of electrical wiring and equipment to determine whether
they meet certain safety standards when properly used. Acceptance is usually indicated by the
words “UL Approved” or “UL Listed.” The address is UL; 333 Pfingsten Road; Northbrook, Illinois
60062-2096 USA. http://www.ul.com
●National Electrical Manufacturing Association (NEMA) (USA only)—an organization of electrical
product manufacturers. Members develop consensus standards for cables, wiring, and electrical
components. The address is NEMA; 1300 N. 17th Street; Rosslyn, Virginia 22209. http://www.nema.org
●Electronics Industries Alliance (EIA)—a trade association that develops technical standards,
disseminates marketing data, and maintains contact with government agencies in matters relating to
the electronics industry. The address is EIA; 2500 Wilson Boulevard; Arlington, Virginia 22201 USA.
http://www.eia.org
●Federal Communications Commission (FCC)—a commission that regulates all interstate and foreign
electrical communication systems that originate in the United States according to the
Communications Act of 1934. The FCC regulates all U.S. telephone and cable systems. The address is
FCC; 445 12th Street S.W.; Washington, D.C. 20554 USA. http://www.fcc.gov

Site Preparation
Extreme Networks Consolidated XOS Hardware Installation Guide 18
Wiring Closet Considerations
You should consider the following recommendations for your wiring closet:
●Ensure that your system is easily accessible for installation and service. See “Rack Specifications and
Recommendations” on page 21 for information.
●Use appropriate AC power, power distribution, and grounding for your specific installation.
●Use a vinyl floor covering in your wiring closet. (Concrete floors accumulate dust, and carpets can
cause static electricity.)
●Prevent unauthorized access to wiring closets by providing door locks. Install the equipment in a
secured, enclosed, and restricted-access area, ensuring that only qualified service personnel have
access to the equipment.
●Provide adequate overhead lighting for easy maintenance.
●Ensure that each wiring closet has a suitable ground. All distribution racks and equipment installed
in the closet should be grounded.
●Ensure that all system environmental requirements are met, such as ambient temperature and
humidity.
NOTE
Extreme etworks recommends that you consult an electrical contractor for commercial building and wiring
specifications.
Temperature
Extreme Networks equipment generates a significant amount of heat. It is essential that you provide a
temperature-controlled environment for both performance and safety.
Install the equipment only in a temperature- and humidity-controlled indoor area that is free of
airborne materials that can conduct electricity. Too much humidity can cause a fire. Too little humidity
can produce electrical shock and fire.
The following are some general thermal recommendations for your wiring closet:
●Ensure that the ventilation in the wiring closet is adequate to maintain a temperature below 104° F
(40° C).
●Install a reliable air conditioning and ventilation system.
●Keep the ventilation in the wiring closet running during non-business hours; otherwise, the
equipment can overheat.
●Maintain ambient operating temperature: 32° to 104° F (0° to 40° C).
●Maintain storage temperature: -40° to 158° F (-40° to 70° C).
NOTE
Like all electrical equipment, product lifetimes degrade with increased temperature. If possible, temperatures should
be kept at approximately 78° F (25° C) or lower.

Meeting Site Requirements
Extreme Networks Consolidated XOS Hardware Installation Guide 19
Spacing Requirements
Extreme Networks recommends placing no more than three chassis next to each other due to chassis-to-
chassis heating. The following are some general recommendations for installing your BlackDiamond
10K series and BlackDiamond 8810 switches:
●A minimum of 17.32 inches (44 cm) between each set of three BlackDiamond switches.
or
●Place patch panels between each set of three BlackDiamond switches. A patch panel does not require
any power and does not generate any heat.
NOTE
Up to five adjacent switches will continue to function without safety concerns. However, product lifetime may
degrade with continued exposure to high temperatures in close proximity and long term reliability may be
compromised.
Airflow Requirements
To ensure proper airflow through a BlackDiamond switch, refer to the following recommendations
when you are installing your switch:
●BlackDiamond switches require approximately 1.5 inches (3.81 cm) to 3 inches (7.62 cm) around both
the front and rear of the chassis from any cabinet wall or other obstruction for proper airflow.
●Air temperature measured 1 inch (2.54 cm) from the fan inlet should be less than 104 °F (40 °C).
The airflow of a BlackDiamond 10K series and BlackDiamond 8810 switch moves through the power
supplies and is independent of the airflow through the modules as shown in Figure 1 and Figure 2. For
example, if the power supply fans fail, the airflow through the module area of the chassis will not cool
down the power supplies. The direction of the airflow is as follows:
●Airflow for cooling power supplies moves front to back as you face the chassis.
●Airflow for cooling modules moves left to right as you face the chassis.

Site Preparation
Extreme Networks Consolidated XOS Hardware Installation Guide 20
Figure 1: Airflow through the BlackDiamond 10K system chassis
Figure 2: Airflow through the BlackDiamond 8810 chassis
EX_010
Airflow through
power supplies
Airflow
through
chassis
ASP045
Airflow at power
supply level
Airflow through
fan tray