Supermicro Supero SC933 Series, Supero SC933S1-R760B, Supero SC933S2-R760B, Supero SC933T-R760B, Supero SC933E1-R760B User Manual

SC933 Chassis Series

USER’S MANUAL

2.0b

SC933S1-R760B

SC933S2-R760B

SC933T-R760B

SC933E1-R760B

SC933E2-R760B

!

SUPER

®

SC933 Chassis Manual

ii

Manual Revision 2.0b
Release Date: December 12 2011

The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates. Please Note: For the most up-to-date version of this

manual, please see our web site at www.supermicro.com.

Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the product
described in this manual at any time and without notice. This product, including software and
documentation, is the property of Supermicro and/or its licensors, and is supplied only under a
license. Any use or reproduction of this product is not allowed, except as expressly permitted by
the terms of said license.

IN NO EVENT WILL SUPERMICRO BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO
USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN PARTICULAR, SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY
HARDWARE, SOFTWARE, OR DATA STORED OR USED WITH THE PRODUCT, INCLUDING THE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.

Any disputes arising between manufacturer and customer shall be governed by the laws of Santa
Clara County in the State of California, USA. The State of California, County of Santa Clara shall
be the exclusive venue for the resolution of any such disputes. Super Micro's total liability for all
claims will not exceed the price paid for the hardware product.

California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate
warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate
Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”

WARNING: Handling of lead solder materials used in this
product may expose you to lead, a chemical known to
the State of California to cause birth defects and other
reproductive harm.

Unless you request and receive written permission from Super Micro Computer, Inc., you may not
copy any part of this document.

Information in this document is subject to change without notice. Other products and companies
referred to herein are trademarks or registered trademarks of their respective companies or mark
holders.

Copyright © 2011 by Super Micro Computer, Inc.
All rights reserved.

Printed in the United States of America

iii

Preface

Preface

About This Manual

This manual is written for professional system integrators and PC technicians. It

provides information for the installation and use of the SC933 chassis. Installation

and maintenance should be performed by experienced technicians only.

Supermicro's SC933 chassis provides high-capacity storage in a 3U form factor. The

design features fteen hot-swappable 3.5" hard drive bays, with triple redundant

power supplies and dual redundant cooling fans, while optimizing rack mounting

space.

This document lists compatible parts available when this document was published.

Always refer to the our Web site for updates on supported parts and congura-

tions.

SC933 Chassis Manual

iv

Manual Organization

Chapter 1 Introduction

The rst chapter provides a checklist of the main components included with this

chassis and describes the main features of the SC933 chassis. This chapter also

includes contact information.

Chapter 2 System Safety

This chapter lists warnings, precautions, and system safety. It recommended that

you thoroughly familiarize yourself installing and servicing this chassis safety pre-

cautions.

Chapter 3 System Interface

Refer here for descriptions of the LEDs which provide information on system health

and activity and the responses that you may need to take.

Chapter 4 Chassis Setup and Maintenance

Follow the procedures given in this chapter when installing and removing compo-

nents, or reconguring your chassis.

Chapter 5 Rack Installation

Refer to this chapter for detailed information on chassis rack installation. You should

follow the procedures given in this chapter when installing, removing or reconguring

your chassis into a rack environment.

Appendices

This section lists compatible cables, power supply specications, and compatible

backplanes. Not all compatible backplanes are listed. Refer to our Web site for the

latest compatible backplane information.

NOTE: Customers requiring support for SCSI backplanes may contact Supermicro's

Technical Support department directly.

v

Preface

Table of Contents

Chapter 1 Introduction

1-1 Overview ......................................................................................................... 1-1

1-2 Shipping List .................................................................................................... 1-1

Part Numbers .................................................................................................. 1-1

1-3 Where to get Replacement Components ........................................................ 1-2

1-4 Contacting Supermicro .................................................................................... 1-3

1-5 Returning Merchandise for Service................................................................. 1-4

Chapter 2 System Safety

2-1 Overview ......................................................................................................... 2-1

2-2 Warnings and Precautions .............................................................................. 2-1

2-3 Preparing for Setup ......................................................................................... 2-1

2-4 Electrical Safety Precautions .......................................................................... 2-2

2-5 General Safety Precautions ............................................................................ 2-3

2-6 System Safety ................................................................................................. 2-3

Chapter 3 System Interface

3-1 Overview ......................................................................................................... 3-1

3-2 Control Panel Buttons ..................................................................................... 3-2

3-3 Control Panel LEDs ........................................................................................ 3-2

3-4 Drive Carrier LEDs .......................................................................................... 3-4

SAS Drives ...................................................................................................... 3-4

SCSI Drives ..................................................................................................... 3-4

Chapter 4 Chassis Setup and Maintenance

4-1 Overview ......................................................................................................... 4-1

Installation Procedures .................................................................................... 4-1

4-2 Removing the Chassis Cover ......................................................................... 4-2

4-3 Installing Hard Drives ...................................................................................... 4-3

4-4 Installing the Motherboard .............................................................................. 4-5

I/O shield ......................................................................................................... 4-5

Permanent and Optional Standoffs ................................................................. 4-5

4-5 Installing the Air Shroud .................................................................................. 4-7

4-6 Installing System Fans .................................................................................... 4-9

4-7 Replacing the Power Supply ........................................................................4-11

4-8 Changing the Power Distributor .................................................................... 4-13

SC933 Chassis Manual

vi

Chapter 5 Rack Installation

5-1 Overview ......................................................................................................... 5-1

5-2 Unpacking the System .................................................................................... 5-1

5-3 Preparing for Setup ......................................................................................... 5-1

Choosing a Setup Location ............................................................................. 5-1

Rack Precautions ............................................................................................ 5-2

General Server Precautions ............................................................................ 5-2

Rack Mounting Considerations ....................................................................... 5-3

Ambient Operating Temperature ................................................................ 5-3

Mechanical Loading ................................................................................... 5-3

Circuit Overloading ..................................................................................... 5-3

Reliable Ground ......................................................................................... 5-3

5-4 Rack Mounting Instructions ............................................................................. 5-4

Identifying the Sections of the Rack Rails ...................................................... 5-4

Inner Rail Extension ........................................................................................ 5-4

Appendix A Cables, Screws, and other Accessories

Appendix B SC933 Power Supply Specications

Appendix C SAS-933EL Backplane Specications

Appendix D SATA-933 Backplane Specications

Chapter 1

Introduction

1-1 Overview

Supermicro’s SC933 chassis features a unique and highly-optimized design. The

chassis is equipped with high-efciency power supplies while high-performance fans

provide ample optimized cooling for the system. Fifteen hot-swappable drive bays

offer maximum storage capacity in a 3U form factor.

1-2 Shipping List

Part Numbers

Please visit the following link for the latest shipping lists and part numbers for your

particular chassis model http://www.supermicro.com/

Chapter 1: Introduction

1-1

SC933 Chassis

Model CPU HDD I/O Slots

Power

Supply

SC933E2-R760(B)

DP Xeon,

UP P4

15x SAS Bays (+)

2x 28 Port SAS

Expander

Six expansion

slots

760W

(Redundant)

SC933E1-R760(B)

DP Xeon,

UP P4

15x SAS Bays (+)

1x 28 Port SAS

Expander

Six expansion

slots

760W

(Redundant)

SC933S2-R760(B)

DP Xeon,

UP P4

7+7 U320 SCSI

Six expansion

slots

760W

(Redundant)

SSC933S1-R760(B)

DP Xeon 14x U320 SCSI

Six expansion

slots

760W

(Redundant)

SC933T-R760(B)

DP Xeon,

UP P4

15x SAS

Six expansion

slots

760W

(Redundant)

Legend:

DP = Dual Processor Support
FF = Full-height, Full-length
P4 = Pentium® 4 CPU
UP = Single Processor Support

SC933 Chassis Manual

1-2

1-3 Where to get Replacement Components

Although not frequently, you may need replacement parts for your system. To

ensure the highest level of professional service and technical support, we strongly

recommend purchasing exclusively from our Supermicro Authorized Distributors/

System Integrators/Resellers. A list of Supermicro Authorized Distributors/System

Integrators/Reseller can be found at: http://www.supermicro.com. Click the Where

to Buy link.

NOTE: Customers requiring support for SCSI backplanes may contact Supermicro's

Technical Support department directly.

1-3

Chapter 1: Introduction

1-4 Contacting Supermicro

Headquarters

Address: Super Micro Computer, Inc.

980 Rock Ave.

San Jose, CA 95131 U.S.A.

Tel: [phone]

Fax: [phone]

Email: [e-mail] (General Information)

[e-mail] (Technical Support)

Web Site: www.supermicro.com

Europe

Address: Super Micro Computer B.V.

Het Sterrenbeeld 28, 5215 ML

's-Hertogenbosch, The Netherlands

Tel: [phone]

Fax: [phone]

Email: [e-mail] (General Information)

[e-mail] (Technical Support)

[e-mail] (Customer Support)

Asia-Pacic

Address: Super Micro Computer, Inc.

4F, No. 232-1, Liancheng Rd.

Chung-Ho 235, Taipei County

Taiwan, R.O.C.

Tel: [phone]

Fax: [phone]

Web Site: www.supermicro.com.tw

Technical Support:

Email: [e-mail]

Tel: [phone]

SC933 Chassis Manual

1-4

1-5 Returning Merchandise for Service

A receipt or copy of your invoice marked with the date of purchase is required be-

fore any warranty service will be rendered. You can obtain service by calling your

vendor for a Returned Merchandise Authorization (RMA) number. When returning

to the manufacturer, the RMA number should be prominently displayed on the

outside of the shipping carton, and mailed prepaid or hand-carried. Shipping and

handling charges will be applied for all orders that must be mailed when service

is complete.

For faster service, RMA authorizations may be requested online (http://www.

supermicro.com/support/rma/).

Whenever possible, repack the chassis in the original Supermicro carton, using the

original packaging material. If these are no longer available, be sure to pack the

chassis securely, using packaging material to surround the chassis so that it does

not shift within the carton and become damaged during shipping.

This warranty only covers normal consumer use and does not cover damages in-

curred in shipping or from failure due to the alteration, misuse, abuse or improper

maintenance of products.

During the warranty period, contact your distributor rst for any product problems.

2-1

Chapter 2: System Safety

Chapter 2

System Safety

2-1 Overview

This chapter provides a quick setup checklist to get your chassis up and running.

Following the steps in order given should enable you to have your chassis set up

and operational within a minimal amount of time. This quick setup assumes that you

are an experienced technician, famailiar with common concepts and terminology.

2-2 Warnings and Precautions

You should inspect the box the chassis was shipped in and note if it was damaged

in any way. If the chassis itself shows damage, le a damage claim with carrier

who delivered your system.

Decide on a suitable location for the rack unit that will hold that chassis. It should

be situated in a clean, dust-free area that is well venilated. Avoid areas where heat,

electrical noise and eletromagnetic elds are generated.

The chassis must be placed near at least one grounded power outlet. When con-

gured, the SC933 chassis includes three redundant power supplies and requires

three grounded outlets.

2-3 Preparing for Setup

The SC933 chassis includes a set of rail assemblies, including mounting brackets

and mounting screws you will need to install the system into the rack. Please read

this manual in its entirety before beginning the installation procedure.

SC933 Chassis Manual

2-2

2-4 Electrical Safety Precautions

Basic electrical safety precautions should be followed to protect yourself from harm

and the SC933 from damage:

•Be aware of the locations of the power on/off switch on the chassis as well

as the room’s emergency power-off switch, disconnection switch or electrical

outlet. If an electrical accident occurs, you can then quickly remove power from

the system.

•Do not work alone when working with high-voltage components.

•Power should always be disconnected from the system when removing or in-

stalling main system components, such as the motherboard, memory modules

and the DVD-ROM and oppy drives (not necessary for hot swappable drives).

When disconnecting power, you should rst power down the system with the

operating system and then unplug the power cords from all the power supply

modules in the system.

•When working around exposed electrical circuits, another person who is fa-

miliar with the power-off controls should be nearby to switch off the power, if

necessary.

•Use only one hand when working with powered-on electrical equipment. This

is to avoid making a complete circuit, which will cause electrical shock. Use

extreme caution when using metal tools, which can easily damage any electrical

components or circuit boards they come into contact with.

•Do not use mats designed to decrease electrostatic discharge as protection from

electrical shock. Instead, use rubber mats that have been specically designed

as electrical insulators.

•The power supply power cord must include a grounding plug and must be

plugged into grounded electrical outlets.

•Motherboard Battery: CAUTION - There is a danger of explosion if the onboard

battery is installed upside down, which will reverse its polarities This battery

must be replaced only with the same or an equivalent type recommended by

the manufacturer. Dispose of used batteries according to the manufacturer’s

instructions.

2-3

Chapter 2: System Safety

•DVD-ROM laser: CAUTION - this server may have come equipped with a

DVD-ROM drive. To prevent direct exposure to the laser beam and hazardous

radiation exposure, do not open the enclosure or use the unit in any uncon-

ventional way.

2-5 General Safety Precautions

•Keep the area around the chassis clean and free of clutter.

•Place the chassis top cover and any system components that have been re-

moved away from the system or on a table so that they won’t accidentally be

stepped on.

•While working on the system, do not wear loose clothing such as neckties and

unbuttoned shirt sleeves, which can come into contact with electrical circuits or

be pulled into a cooling fan.

•Remove any jewelry or metal objects from your body, which are excellent metal

conductors that can create short circuits and harm you if they come into contact

with printed circuit boards or areas where power is present.

•After accessing the inside of the system, close the system back up and secure

it to the rack unit with the retention screws after ensuring that all connections

have been made.

2-6 System Safety

Electrostatic discharge (ESD) is generated by two objects with different electrical

charges coming into contact with each other. An electrical discharge is created to

neutralize this difference, which can damage electronic components and printed

circuit boards. The following measures are generally sufcient to neutralize this

difference before contact is made to protect your equipment from ESD:

•Do not use mats designed to decrease electrostatic discharge as protection from

electrical shock. Instead, use rubber mats that have been specically designed

as electrical insulators.

•Use a grounded wrist strap designed to prevent static discharge.

•Keep all components and printed circuit boards (PCBs) in their antistatic bags

until ready for use.

SC933 Chassis Manual

2-4

•Touch a grounded metal object before removing any board from its antistatic

bag.

•Do not let components or PCBs come into contact with your clothing, which may

retain a charge even if you are wearing a wrist strap.

•Handle a board by its edges only; do not touch its components, peripheral chips,

memory modules or contacts.

•When handling chips or modules, avoid touching their pins.

•Put the motherboard and peripherals back into their antistatic bags when not

in use.

•For grounding purposes, make sure your computer chassis provides excellent

conductivity between the power supply, the case, the mounting fasteners and

the motherboard.

3-1

Chapter 3: System Interface

Chapter 3

System Interface

3-1 Overview

There are several LEDs on the control panel as well as others on the drive carriers

to keep you constantly informed of the overall status of the system as well as the

activity and health of specic components. Most SC933 models have three buttons

on the chassis control panel: a power on/off button, a reset button and a mute but-

ton. This chapter explains the meanings of all buttons and LED indicators and the

appropriate responses you may need to take.

!

!

Power

Button

Reset

Button

Mute

Button

Power

LED

NIC

LED

Overheat/Fan

Fail LED

Power Failure

LED

SC933 Chassis Manual

3-2

3-2 Control Panel Buttons

There are three push-buttons located on the front of the chassis. These are, in order

from top to bottom, a power on/off button, reset button and a mute button.

Power: The main power switch is used to apply or remove power from the power

supply to the server system. Turning off system power with this button removes the

main power but keeps standby power supplied to the system. It is necessary to unplug

the system before servicing.

Reset: The reset button is used to reboot the system.

Mute: The mute button allows the system alarm to be silenced quickly.

3-3 Control Panel LEDs

The control panel located on the front of the SC933 chassis has ve LEDs. These

LEDs provide you with critical information related to different parts of the system.

This section explains what each LED indicates when illuminated and any corrective

action you may need to take.

Mute

3-3

Chapter 3: System Interface

Power: Indicates power is being supplied to the system's power supply units. This

LED should normally be illuminated when the system is operating.

Overheat/Fan Fail: When this LED ashes it indicates a fan failure. When continu-

ously on (not ashing) it indicates an overheat condition, which may be caused by

cables obstructing the airow in the system or the ambient room temperature being

too warm. Check the routing of the cables and make sure all fans are present and

operating normally. You should also check to make sure that the chassis covers are

installed. Finally, verify that the heatsinks are installed properly. This LED will remain

ashing or on as long as the overheat condition exists.

NIC1: Indicates network activity on GLAN1 when ashing.

HDD: Indicates IDE channel activity in the SAS drive, SCSI drive, and/or DVD-ROM

drive activity when ashing.

Power Fail: Indicates a power failure to the system's power supply units.

!

SC933 Chassis Manual

3-4

3-4 Drive Carrier LEDs

Your chassis uses SAS or SCSI drives, but not both.

SAS Drives

Each SAS drive carrier has two LEDs.

•Green: Each SAS drive carrier has a green LED. When illuminated, this green

LED (on the front of the SAS drive carrier) indicates drive activity. A connection

to the SAS backplane enables this LED to blink on and off when that particular

drive is being accessed.

•Red: The red LED indicates a SAS drive failure. If one of the SAS drives fail,

you should be notied by your system management software.

SCSI Drives

Each SCSI drive carrier has two LEDs.

•Green: When illuminated, the green LED on the front of the SCSI drive carrier

indicates drive activity. A connection to the SCSI SCA backplane enables this

LED to blink on and off when that particular drive is being accessed.

•Red: The SAF-TE compliant backplane activates the red LED to indicate a drive

failure. If one of the SCSI drives fail, you should be notied by your system

management software.

If your system supports more drives than are currently being utilized, the LEDs

which are designated for unused drives will remain unlit.

4-1

Chapter 4: Chassis Setup and Maintenance

Chapter 4

Chassis Setup and Maintenance

4-1 Overview

This chapter covers the steps required to install components and perform mainte-

nance on the chassis. The only tool you will need to install components and perform

maintenance is a Phillips screwdriver. Print this page to use as a reference while

setting up your chassis.

Installation Procedures

•Overview

•Removing the Chassis Cover

•Installing the TQ+ Backplane

•Installing Hard Drives

•Installing the Motherboard (I/O Shield, Standoffs, Add-on /Expansion Setup)

•Installing the Air Shroud

•Installing System Fans

•Replacing the Power Supply

Review the warnings and precautions listed in the manual be­fore setting up or servicing this chassis. These include infor­mation in Chapter 2: System Safety and the warning/precau­tions listed in the setup instructions.

!

SC933 Chassis Manual

4-2

4-2 Removing the Chassis Cover

Removing the Chassis Cover

1. Press both tabs simultaneously.

2. Slide the cover back toward the rear of the chassis.

3. Lift the cover off the chassis.

Figure 4-1: Removing the Chassis Cover

Warning: Except for short periods of time, do NOT operate the
server without the cover in place. The chassis cover must be in

placetoallowproperairowandpreventoverheating.

!

Release Tab

1

3

2

4-3

Chapter 4: Chassis Setup and Maintenance

Figure 4-2: Removing Hard Drive Carriers

Hard drives are mounted in drive carriers to simplify their installation and removal

from the chassis. These carriers also help promote proper airow within the drive

bays.

Removing Hard Drive Trays from the Chassis

1. Press the release button on the drive tray. This extends the drive bay handle.

2. Use the handle to pull the drive out of the chassis.

Warning: Except for short periods of time (swapping hard
drives), do not operate the server with the hard drive bays
empty.

!

1

1

1

2

4-3 Installing Hard Drives

SC933 Chassis Manual

4-4

Installing a Hard Drive to the Hard Drive Tray

1. Remove the two screws securing the dummy drive to the drive tray and

remove the dummy drive.

2. Place the hard drive tray on a at surface such as a desk, table or work

bench.

3. Slide the hard drive into the tray with the printed circuit board side facing

down.

4. Carefully align the mounting holes in both the drive tray and the hard drive.

5. Secure the hard drive to the tray using four screws.

6. Replace the drive tray into the chassis. Make sure to close the drive tray

handle to lock the drive tray into place.

Drive Carrier

SAS or SCSI

Hard Drive

Figure 4-3: Removing Hard Drive

5

5

Warning: Only enterprise level hard drives are recommended
for use in Supermicro chassis.

!

Dummy Drive

1

1

4-5

Chapter 4: Chassis Setup and Maintenance

4-4 Installing the Motherboard

The I/O shield holds the motherboard ports in place. Install the I/O shield before

installing the motherboard.

I/O shield

Installing the I/O Shield

1. Review the documentation that came with your motherboard. Become familiar

with component placement, requirements, and precautions.

2. Open the chassis cover.

3. With the illustrations facing the outside of the chassis, place the shield into

the space provided.

4. Once installed, the motherboard will hold the I/O shield in place.

Permanent and Optional Standoffs

Standoffs prevent short circuits by creating space between the motherboard and

the chassis surface. The SC933 chassis includes permanent standoffs in locations

used by most motherboards.

Installing Standoffs

1. Compare the mounting holes in the motherboard to those in the chassis.

2. Add or removed standoffs as needed. To do this:

A. Place a hexagonal standoff screw through the bottom the chassis.

B. Secure the screw with the hexagon nut (rounded side up).

Installing the Motherboard

3. Lay the motherboard on the chassis aligning the permanent and optional

standoffs

4. Secure the motherboard to the chassis using the rounded, Phillips head

screws. Do not exceed eight pounds of torque when tightening down the

motherboard.

SC933 Chassis Manual

4-6

5. Secure the CPU(s), heatsinks, and other components to the motherboard as

described in the motherboard documentation.

6. Connect the cables between the motherboard, backplane, chassis, front

panel, and power supply. The fans may be temporarily removed to allow ac-

cess to the backplane ports.

Expansion Slot Setup

The SC933 chassis includes six full-height, full-length PCI slots for expansion

cards.

Installing Expansion Cards

1. Disconnect the power supply, lay the chassis on a at surface, and open the

chassis cover.

2. Remove the screw holding the cover in place for each PCI slot you want to

use. Keep this screw for later use.

3. Secure each card to the chassis by sliding the card's L bracket into the PCI

slot.

4. Insert the card into the motherboard.

4-7

Chapter 4: Chassis Setup and Maintenance

4-5 Installing the Air Shroud

Air shrouds concentrate airow to maximize fan efciency. The SC933 chassis air

shroud does not require tools to set it up.

Installing the Air Shroud

1. If necessary, remove the rear fans by pressing the fan release tab and pulling

the fan from the chassis.

2. Move the cables from the power supply and power distributor to the bottom of

the chassis. You may have to bind the cables together.

3. Slide the air shroud extension into the groove behind the fan closest to the

power supply. The extension should almost touch the side of the chassis.

4. Slide the air shroud into the chassis. The air shroud connects to the air

shroud extension, two of the front fans, and the two rear exhaust fans.

5. The air shroud includes perforations on the bottom. These perforations can be

removed if motherboard components interfere with the air shroud placement.

Do not remove more perforations than necessary.

6. Install the rear fans by sliding each fan into the fan housing on the chassis.

Figure 4-4: Air Shroud for SC933 Chassis

Rear Fans

Air Shroud

Air Shroud

Extension

SC933 Chassis Manual

4-8

Checking the Server's Air Flow

1. Make sure there are no objects to obstruct airow in and out of the server. In

addition, if you are using a front bezel, make sure the bezel's lter is replaced

periodically.

2. Do not operate the server without drives or drive trays in the drive bays. Use

only recommended server parts.

3. Make sure no wires or foreign objects obstruct airow through the chassis.

Pull all excess cabling out of the airow path or use shorter cables.

4. The control panel LEDs inform you of system status. See “Chapter 3: System

Interface” for details on the LEDs and the control panel buttons

5. In most cases, the chassis power supply and fans are pre-installed. If you

need to install fans continue to the Systems Fan section of this chapter. If

the chassis will be installed into a rack, continue to the next chapter for rack

installation instructions.