H3C UniServer R4900 G3 User manual

H3C UniServer R4900 G3 Server

User Guide

New H3C Technologies Co., Ltd.

http://www.h3c.com

Document version: 6W102-20190823

No part of this manual may be reproduced or transmitted in any form or by any means without prior written

consent of New H3C Technologies Co., Ltd.

Trademarks

Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this

document are the property of their respective owners.

Notice

The information in this document is subject to change without notice. All contents in this document, including

statements, information, and recommendations, are believed to be accurate, but they are presented without

warranty of any kind, express or implied. H3C shall not be liable for technical or editorial errors or omissions

contained herein.

Environmental protection

This product has been designed to comply with the environmental protection requirements. The storage, use,

and disposal of this product must meet the applicable national laws and regulations.

Preface

This preface includes the following topics about the documentation:

• Audience.

• Conventions

• Documentation feedback

Audience

This documentation is intended for:

• Network planners.

• Field technical support and servicing engineers.

• Server administrators working with the R4900 G3 Server.

Conventions

The following information describes the conventions used in the documentation.

Command conventions

Convention Description

Boldface Bold

text represents commands and keywords that you enter literally as shown.

Italic

Italic text represents arguments that you replace with actual values.

[ ] Square brackets enclose syntax choices (keywords or arguments) that are optional.

{ x | y | ... }

Braces enclose a set of required syntax choices separated by vertical bars, from which

you select one.

[ x | y | ... ]

Square brackets enclose a set of optional syntax choices separated by vertical bars,

from which you select one or none.

{ x | y | ... } *

Asterisk marked braces enclose a set of required syntax choices separated by vertical

bars, from which you select a minimum of one.

[ x | y | ... ] *

Asterisk marked square brackets enclose optional syntax choices separated by vertical

bars, from which you select one choice, multiple choices, or none.

&<1-n>

The argument or keyword and argument combination before the ampersand (&) sign

can be entered 1 to n times.

# A line that starts with a pound (#) sign is comments.

GUI conventions

Convention Description

Boldface

Window names, button names, field names, and menu items are in Boldface. For

example, the

New User

window opens; click

OK

.

>

Multi-level menus are separated by angle brackets. For example,

File

>

Create

>

Folder

.

Symbols

Convention Description

WARNING!

An alert that calls attention to important information that if not understood or followed

can result in personal injury.

CAUTION:

An alert that calls attention to important information that if not understood or followed

can result in data loss, data corruption, or damage to hardware or software.

IMPORTANT:

An alert that calls attention to essential information.

NOTE:

An alert that contains additional or supplementary information.

TIP:

An alert that provides helpful information.

Network topology icons

Convention Description

Represents a generic network device, such as a router, switch, or firewall.

Represents a routing-capable device, such as a router or Layer 3 switch.

Represents a generic switch, such as a Layer 2 or Layer 3 switch, or a router that

supports Layer 2 forwarding and other Layer 2 features.

Represents an access controller, a unified wired-WLAN module, or the access

controller engine on a unified wired-WLAN switch.

Represents an access point.

Wireless terminator unit.

Wireless terminator.

Represents a mesh access point.

Represents omnidirectional signals.

Represents directional signals.

Represents a security product, such as a firewall, UTM, multiservice security

gateway, or load balancing device.

Represents a security module, such as a firewall, load balancing, NetStream, SSL

VPN, IPS, or ACG module.

Examples provided in this document

Examples in this document might use devices that differ from your device in hardware model,

configuration, or software version. It is normal that the port numbers, sample output, screenshots,

and other information in the examples differ from what you have on your device.

T



Documentation feedback

You can e-mail your comments about product documentation to [email protected].

We appreciate your comments.

i

Contents

Safety information ············································································ 1

Safety sign conventions ··············································································································· 1

Power source recommendations ··································································································· 1

Installation safety recommendations ······························································································ 2

General operating safety ······································································································· 2

Electrical safety ··················································································································· 2

Rack mounting recommendations ··························································································· 2

ESD prevention ··················································································································· 3

Cooling performance ············································································································ 3

Battery safety ····················································································································· 3

Preparing for installation ···································································· 5

Rack requirements ····················································································································· 5

Installation site requirements ········································································································ 6

Space and airflow requirements ····························································································· 6

Temperature and humidity requirements ·················································································· 7

Equipment room height requirements ······················································································ 7

Cleanliness requirements ······································································································ 7

Grounding requirements ······································································································· 8

Installation tools ························································································································· 8

Installing or removing the server ························································ 10

Installing the server ·················································································································· 10

Installing rails ··················································································································· 10

Rack-mounting the server ··································································································· 10

(Optional) Installing cable management brackets ····································································· 11

Connecting external cables ········································································································ 11

Cabling guidelines ············································································································· 11

Connecting a mouse, keyboard, and monitor ··········································································· 11

Connecting an Ethernet cable ······························································································ 13

Connecting a USB device ··································································································· 14

Connecting the power cord ·································································································· 15

Securing cables ················································································································ 19

Removing the server from a rack ································································································· 19

Powering on and powering off the server ············································· 21

Important information ················································································································ 21

Powering on the server ············································································································· 21

Prerequisites ···················································································································· 21

Procedure ························································································································ 21

Powering off the server ············································································································· 22

Prerequisites ···················································································································· 22

Procedure ························································································································ 22

Configuring the server ····································································· 23

Configuration flowchart·············································································································· 23

Powering on the server ············································································································· 23

Configuring basic BIOS settings ·································································································· 24

Setting the server boot order ································································································ 24

Setting the BIOS passwords ································································································ 24

Configuring RAID ····················································································································· 24

Installing the operating system and hardware drivers ······································································· 24

Installing the operating system ····························································································· 24

Installing hardware drivers ··································································································· 24

Updating firmware ···················································································································· 24

ii

Installing hardware options ······························································· 26

Installing the security bezel ········································································································ 26

Installing SAS/SATA drives ········································································································ 26

Installing NVMe drives ·············································································································· 28

Installing power supplies ············································································································ 30

Installing riser cards and PCIe modules ························································································ 31

Guidelines ······················································································································· 31

Installing an RC-3GPU-R4900-G3, RC-FHHL-2U-G3-1, or RS-3*FHHL-R4900 riser card and a PCIe

module ···························································································································· 32



Installing an RC-GPU/FHHL-2U-G3-1 riser card and a PCIe module ············································ 34

Installing an RC-2*FHFL-2U-G3 riser card and a PCIe module ···················································· 36

Installing an RC-FHHL-2U-G3-2 riser card and a PCIe module ··················································· 39

Installing an RC-2*LP-2U-G3 riser card and a PCIe module ······················································· 41

Installing an RC-GPU/FHHL-2U-G3-2 or RC-2GPU-R4900-G3 riser card and a PCIe module ············ 44

Installing storage controllers and power fail safeguard modules ························································· 45

Guidelines ······················································································································· 45

Installing a Mezzanine storage controller and a power fail safeguard module ································· 46

Installing a standard storage controller and a power fail safeguard module ···································· 48

Installing a supercapacitor ··································································································· 50

Installing GPU modules ············································································································· 54

Guidelines ······················································································································· 54

Installing a GPU module without a power cord (standard chassis air baffle) ··································· 55

Installing a GPU module with a power cord (standard chassis air baffle)········································ 57

Installing a GPU module with a power cord (GPU-dedicated chassis air baffle) ······························· 59

Installing Ethernet adapters ········································································································ 61

Guidelines ······················································································································· 61

Installing an mLOM Ethernet adapter ····················································································· 61

Installing a PCIe Ethernet adapter ························································································· 62

Installing SATA M.2 SSDs ········································································································· 63

Guidelines ······················································································································· 63

Installing SATA M.2 SSDs at the server front ··········································································· 63

Installing SATA M.2 SSDs at the server rear ··········································································· 65

Installing SD cards ··················································································································· 66

Installing an NVMe SSD expander module ···················································································· 68

Installing the NVMe VROC module ······························································································ 69

Installing a front or rear drive cage ······························································································· 69

Installing the rear 2SFF drive cage ························································································ 69

Installing the rear 4SFF drive cage ························································································ 71

Installing the rear 2LFF drive cage ························································································ 72

Installing the rear 4LFF drive cage ························································································ 73

Installing a front 8SFF drive cage ·························································································· 73

Installing an optical drive ··········································································································· 74

Preparing for the installation ································································································ 74

Installing a SATA optical drive ······························································································ 75

Installing a diagnostic panel ······································································································· 77

Preparing for the installation ································································································ 77

Installing the SD-SFF-A SFF diagnostic panel ········································································· 78

Installing the SD-SFF-B SFF diagnostic panel ········································································· 80

Installing the SD-LFF-G3-A LFF diagnostic panel ····································································· 82

Installing a serial label pull tab module ·························································································· 85

Installing fans ·························································································································· 87

Installing processors ················································································································· 89

Installing DIMMs ······················································································································ 92

Installing and setting up a TCM or TPM ························································································ 96

Installation and setup flowchart ···························································································· 96

Installing a TCM or TPM ····································································································· 97

Enabling the TCM or TPM in the BIOS ··················································································· 98

Configuring encryption in the operating system ········································································ 98

Replacing hardware options ····························································· 99

Replacing the access panel ········································································································ 99

iii

Removing the access panel ································································································· 99

Installing the access panel ································································································ 100

Replacing the security bezel ····································································································· 101

Replacing a SAS/SATA drive ···································································································· 101

Replacing an NVMe drive ········································································································ 102

Replacing a power supply ········································································································ 103

Replacing air baffles ··············································································································· 106

Removing air baffles ········································································································ 106

Installing air baffles ·········································································································· 107

Replacing a riser card and a PCIe module ··················································································· 108

Replacing an RC-Mezz-Riser-G3 Mezz PCIe riser card ·································································· 109

Replacing a storage controller ·································································································· 111

Guidelines ····················································································································· 111

Preparing for replacement ································································································· 111

Replacing the Mezzanine storage controller ·········································································· 111

Replacing a standard storage controller ··············································································· 112

Replacing the power fail safeguard module ················································································· 113

Replacing the power fail safeguard module for the Mezzanine storage controller ·························· 113

Replacing the power fail safeguard module for a standard storage controller ································ 116

Replacing a GPU module ········································································································ 117

Replacing a GPU module without a power cord or with a standard chassis air baffle ······················ 117

Replacing a GPU module with a power cord and a GPU-dedicated chassis air baffle ····················· 119

Replacing an Ethernet adapter ·································································································· 120

Replacing an mLOM Ethernet adapter ················································································· 120

Replacing a PCIe Ethernet adapter ····················································································· 121

Replacing a M.2 transfer module and a SATA M.2 SSD ································································· 122

Replacing the front M.2 transfer module and a SATA M.2 SSD ················································· 122

Replacing the rear M.2 transfer module and a SATA M.2 SSD ·················································· 123

Replacing an SD card ············································································································· 124

Replacing the dual SD card extended module ·············································································· 125

Replacing an NVMe SSD expander module ················································································· 126

Replacing an NVMe VROC module ··························································································· 127

Replacing a fan ····················································································································· 127

Replacing the fan cage ············································································································ 128

Replacing a DIMM·················································································································· 129

Replacing a processor ············································································································ 130

Guidelines ····················································································································· 131

Prerequisites ·················································································································· 131

Removing a processor ······································································································ 131

Installing a processor ······································································································· 132

Replacing the system battery ···································································································· 134

Removing the system battery ····························································································· 134

Installing the system battery ······························································································ 135

Verifying the replacement ·································································································· 135

Replacing the system board ····································································································· 136

Guidelines ····················································································································· 136

Removing the system board ······························································································ 136

Installing the system board ································································································ 137

Replacing the drive expander module ························································································· 139

Replacing drive backplanes ······································································································ 141

Removing drive backplanes ······························································································· 141

Installing drive backplanes ································································································ 142

Verifying the replacement ·································································································· 144

Replacing the SATA optical drive ······························································································ 144

Replacing the diagnostic panel ································································································· 145

Replacing the serial label pull tab module ···················································································· 146

Replacing the chassis-open alarm module ·················································································· 146

Removing the chassis-open alarm module ············································································ 146

Installing the chassis-open alarm module ············································································· 147

Replacing chassis ears ··········································································································· 148

Replacing the right chassis ear ··························································································· 148

Replacing the left chassis ear ···························································································· 151

iv

Replacing the TPM/TCM ········································································································· 152

Connecting internal cables ····························································· 153

Connecting drive cables ·········································································································· 153

8SFF server ··················································································································· 153

25SFF server ················································································································· 168

8LFF server ··················································································································· 172

12LFF server ·················································································································· 174

Connecting the flash card and the supercapacitor of the power fail safeguard module ·························· 187

Connecting the flash card on the Mezzanine storage controller ················································· 187

Connecting the flash card on a standard storage controller ······················································· 188

Connecting the power cord of a GPU module ··············································································· 188

Connecting the NCSI cable for a PCIe Ethernet adapter ································································· 189

Connecting the SATA M.2 SSD cable ························································································· 190

Connecting the front SATA M.2 SSD cable ··········································································· 190

Connecting the rear SATA M.2 SSD cable ············································································ 191

Connecting the SATA optical drive cable ····················································································· 191

Connecting the front I/O component cable assembly ····································································· 192

Connecting the cable for the front VGA and USB 2.0 connectors on the left chassis ear ························ 193

Connecting the diagnostic panel cable ························································································ 193

Maintenance ··············································································· 195

Guidelines ···························································································································· 195

Maintenance tools ·················································································································· 195

Maintenance tasks ················································································································· 195

Observing LED status ······································································································ 195

Monitoring the temperature and humidity in the equipment room ··············································· 195

Examining cable connections ····························································································· 195

Technical support ·················································································································· 196

1

Safety information

Safety sign conventions

To avoid bodily injury or damage to the server or its components, make sure you are familiar with the

safety signs on the server chassis or its components.

Table 1 Safety signs

Sign Description

Circuit or electricity hazards are present. Only H3C authorized or professional

server engineers are allowed to service, repair, or upgrade the server.

WARNING!

To avoid bodily injury or damage to circuits, do not open any components marked

with the electrical hazard sign unless you have authorization to do so.

Electrical hazards are present. Field servicing or repair is not allowed.

WARNING!

To avoid bodily injury, do not open any components with the field-servicing

forbidden sign in any circumstances.

The surface or component might be hot and present burn hazards.

WARNING!

To avoid being burnt, allow hot surfaces or components to cool before touching

them.

The server or component is heavy and requires more than one people to carry or

move.

WARNING!

To avoid bodily injury or damage to hardware, do not move a heavy component

alone. In addition, observe local occupational health and safety requirements and

guidelines for manual material handling.

The server is powered by multiple power supplies.

WARNING!

To avoid bodily injury from electrical shocks, make sure you disconnect all power

supplies if you are performing offline servicing.

Power source recommendations

Power instability or outage might cause data loss, service disruption, or damage to the server in the

worst case.

To protect the server from unstable power or power outage, use uninterrupted power supplies (UPSs)

to provide power for the server.

2

Installation safety recommendations

To avoid bodily injury or damage to the server, read the following information carefully before you

operate the server.

General operating safety

To avoid bodily injury or damage to the server, follow these guidelines when you operate the server:

• Only H3C authorized or professional server engineers are allowed to install, service, repair,

operate, or upgrade the server.

• Make sure all cables are correctly connected before you power on the server.

• Place the server on a clean, stable table or floor for servicing.

• To avoid being burnt, allow the server and its internal modules to cool before touching them.

Electrical safety

WARNING!

If you put the server in standby mode (system power LED in amber) with the power on/standby

button on the front panel, the power supplies continue to supply power to some circuits in the server.

To remove all power for servicing safety, you must first press the button, wait for the system to ente

r

standby mode, and then remove all power cords from the server.

To avoid bodily injury or damage to the server, follow these guidelines:

• Always use the power cords that came with the server.

• Do not use the power cords that came with the server for any other devices.

• Power off the server when installing or removing any components that are not hot swappable.

Rack mounting recommendations

To avoid bodily injury or damage to the equipment, follow these guidelines when you rack mount a

server:

• Mount the server in a standard 19-inch rack.

• Make sure the leveling jacks are extended to the floor and the full weight of the rack rests on the

leveling jacks.

• Couple the racks together in multi-rack installations.

• Load the rack from the bottom to the top, with the heaviest hardware unit at the bottom of the

rack.

• Get help to lift and stabilize the server during installation or removal, especially when the server

is not fastened to the rails. As a best practice, a minimum of two people are required to safely

load or unload a rack. A third person might be required to help align the server if the server is

installed higher than check level.

• For rack stability, make sure only one unit is extended at a time. A rack might get unstable if

more than one server unit is extended.

• Make sure the rack is stable when you operate a server in the rack.

• To maintain correct airflow and avoid thermal damage to the server, use blanks to fill empty rack

units.

3

ESD prevention

Electrostatic charges that build up on people and tools might damage or shorten the lifespan of the

system board and electrostatic-sensitive components.

Preventing electrostatic discharge

To prevent electrostatic damage, follow these guidelines:

• Transport or store the server with the components in antistatic bags.

• Keep the electrostatic-sensitive components in the antistatic bags until they arrive at an

ESD-protected area.

• Place the components on a grounded surface before removing them from their antistatic bags.

• Avoid touching pins, leads, or circuitry.

• Make sure you are reliably grounded when touching an electrostatic-sensitive component or

assembly.

Grounding methods to prevent electrostatic discharge

The following are grounding methods that you can use to prevent electrostatic discharge:

• Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.

• Take adequate personal grounding measures, including wearing antistatic clothing, static

dissipative shoes, and antistatic gloves.

• Use conductive field service tools.

• Use a portable field service kit with a folding static-dissipating work mat.

Cooling performance

Poor cooling performance might result from improper airflow and poor ventilation and might cause

damage to the server.

To ensure good ventilation and proper airflow, follow these guidelines:

• Install blanks if the following module slots are empty:

{ Drive bays.

{ Fan bays.

{ PCIe slots.

{ Power supply slots.

• Do not block the ventilation openings in the server chassis.

• To avoid thermal damage to the server, do not operate the server for long periods in any of the

following conditions:

{ Access panel open or uninstalled.

{ Air baffles uninstalled.

{ PCIe slots, drive bays, fan bays, or power supply slots empty.

• Install rack blanks to cover unused rack spaces.

Battery safety

The server's system board contains a system battery, which is designed with a lifespan of 5 to 10

years.

If the server no longer automatically displays the correct date and time, you might need to replace

the battery. When you replace the battery, follow these safety guidelines:

4

• Do not attempt to recharge the battery.

• Do not expose the battery to a temperature higher than 60°C (140°F).

• Do not disassemble, crush, puncture, short external contacts, or dispose of the battery in fire or

water.

• Dispose of the battery at a designated facility. Do not throw the battery away together with other

wastes.

5

Preparing for installation

Prepare a rack that meets the rack requirements and plan an installation site that meets the

requirements of space and airflow, temperature, humidity, equipment room height, cleanliness, and

grounding.

Rack requirements

IMPORTANT:

As a best practice to avoid affecting the server chassis, install power distribution units (PDUs) with

the outputs facing backwards. If you install PDUs with the outputs facing the inside of the server,

please perform an onsite survey to make sure the cables won't affect the server rear.

The server is 2U high. The rack for installing the server must meet the following requirements:

• A standard 19-inch rack.

• A clearance of more than 50 mm (1.97 in) between the rack front posts and the front rack door.

• A minimum of 1200 mm (47.24 in) in depth as a best practice. For installation limits for different

rack depth, see Table 2.

Table 2

Installation limits for different rack depths

Rack depth Installation limits

1000 mm

(39.37 in)

• The H3C cable management arm (CMA) is not supported.

• A clearance of 60 mm (2.36 in) is reserved from the server rear to the rear rack

door for cabling.

• The slide rails and PDUs might hinder each other. Perform onsite survey to

determine the PDU installation location and the proper PDUs. If the PDUs hinder

the installation and movement of the slide rails anyway, use other methods to

support the server, a tray for example.

1100 mm

(43.31 in)

Make sure the CMA does not hinder PDU installation at the server rear before

installing the CMA. If the CMA hinders PDU installation, use a deeper rack or change

the installation locations of PDUs.

1200 mm

(47.24 in)

Make sure the CMA does not hinder PDU installation or cabling. If the CMA hinders

PDU installation or cabling, change the installation locations of PDUs.

For detailed installation suggestions, see Figure 1.

6

Figure 1 Installation suggestions for a 1200 mm deep rack (top view)

(1) 1200 mm (47.24 in) rack depth

(2) A minimum of 50 mm (1.97 in) between the front rack posts and the front rack door

(3) 780 mm (30.71 in) between the front rack posts and the rear of the chassis, including power supply

handles at the server rear (not shown in the figure)

(4) 800 mm (31.50 in) server depth, including chassis ears

(5) 960 mm (37.80 in) between the front rack posts and the CMA

(6) 860 mm (33.86 in) between the front rack posts and the rear ends of the slide rails

Installation site requirements

Space and airflow requirements

For convenient maintenance and heat dissipation, make sure the following requirements are met:

• A minimum clearance of 635 mm (25 in) is reserved in front of the rack.

• A minimum clearance of 762 mm (30 in) is reserved behind the rack.

• A minimum clearance of 1219 mm (47.99 in) is reserved between racks.

• A minimum clearance of 2 mm (0.08 in) is reserved between the server and its adjacent units in

the same rack.

7

Figure 2 Airflow through the server

(1) to (4) Directions of the airflow into the chassis and power supplies

(5) to (7) Directions of the airflow out of the chassis

(8) Direction of the airflow out of the power supplies

Temperature and humidity requirements

To ensure correct operation of the server, make sure the room temperature and humidity meet the

requirements as described in "Appendix A Server specifications."

Equipment room height requirements

To ensure correct operation of the server, make sure the equipment room height meets the

requirements as described in "Appendix A Server specifications."

Cleanliness requirements

Mechanically active substances buildup on the chassis might result in electrostatic adsorption, which

causes poor contact of metal components and contact points. In the worst case, electrostatic

adsorption can cause communication failure.

Table 3 Mechanically active substance concentration limit in the equipment room

Substance Particle diameter Concentration limit

Dust particles ≥ 5 µm

≤ 3 x 10

4

particles/m

3

(No visible dust on desk in three days)

Dust (suspension) ≤ 75 µm ≤ 0.2 mg/m

3

Dust

(sedimentation)

75 µm to 150 µm ≤ 1.5 mg/(m

2

h)

Sand ≥ 150 µm ≤ 30 mg/m

3

The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and

premature aging of components, as shown in Table 4.

Table 4

Harmful gas limits in an equipment room

Gas Maximum concentration (mg/m

3

)

SO

2

0.2

8

Gas Maximum concentration (mg/m

3

)

H

2

S 0.006

NO

2

0.04

NH

3

0.05

Cl

2

0.01

Grounding requirements

Correctly connecting the server grounding cable is crucial to lightning protection, anti-interference,

and ESD prevention. The server can be grounded through the grounding wire of the power supply

system and no external grounding cable is required.

Installation tools

Table 5 lists the tools that you might use during installation.

Table 5 Installation tools

Picture Name Description

T25 Torx screwdriver For captive screws inside chassis ears.

T30 Torx screwdriver For captive screws on processor heatsinks.

T15 Torx screwdriver

(shipped with the server)

For screws on access panels.

T10 Torx screwdriver

(shipped with the server)

For screws on PCIe module blanks or riser card

blanks.

Flat-head screwdriver

For captive screws inside chassis ears or for replacing

system batteries.

Phillips screwdriver For screws on SATA M.2 SSDs.

Cage nut insertion/extraction

tool

For insertion and extraction of cage nuts in rack posts.

Diagonal pliers

For clipping insulating sleeves.

Tape measure For distance measurement.

Multimeter For resistance and voltage measurement.

9

Picture Name Description

ESD wrist strap For ESD prevention when you operate the server.

Antistatic gloves For ESD prevention when you operate the server.

Antistatic clothing For ESD prevention when you operate the server.

Ladder For high-place operations.

Interface cable (such as an

Ethernet cable or optical

fiber)

For connecting the server to an external network.

Monitor (such as a PC) For displaying the output from the server.

10

Installing or removing the server

Installing the server

As a best practice, install hardware options to the server (if needed) before installing the server in the

rack. For more information about how to install hardware options, see "Installing hardware options."

Installing rails

Install the inner rails and the middle-outer rails in the rack mounting rail kit to the server and the rack,

respectively. For information about installing the rails, see the document shipped with the rails.

Rack-mounting the server

WARNING!

To avoid bodily injury, slide the server into the rack with caution for the sliding rails might squeeze

your fingers.

1. Slide the server into the rack. For more information about how to slide the server into the rack,

see the document shipped with the rails.

Figure 3 Rack-mounting the server

2. Secure the server:

a. Push the server until the chassis ears are flush against the rack front posts, as shown by

callout 1 in Figure 4.

b. Unlo

ck the latches of the chassis ears, as shown by callout 2 in Figure 4.

c. Fasten th

e captive screws inside the chassis ears and lock the latches, as shown by callout

3 in Figure 4.

11

Figure 4 Securing the server

(Optional) Installing cable management brackets

Install cable management brackets if the server is shipped with cable management brackets. For

information about how to install cable management brackets, see the installation guide shipped with

the brackets.

Connecting external cables

Cabling guidelines

WARNING!

To avoid electric shock, fire, or damage to the equipment, do not connect communication equipment

to RJ-45 Ethernet ports on the server.

• For heat dissipation, make sure no cables block the inlet or outlet air vents of the server.

• To easily identify ports and connect/disconnect cables, make sure the cables do not cross.

• Label the cables for easy identification of the cables.

• Wrap unused cables onto an appropriate position on the rack.

• To avoid damage to cables when extending the server out of the rack, do not route the cables

too tight if you use cable management brackets.

Connecting a mouse, keyboard, and monitor

About this task

Perform this task before you configure BIOS, HDM, FIST, or RAID on the server or enter the

operating system of the server.

The server provides a maximum of two VGA connectors for connecting a monitor.

• One on the rear panel.

H3C UniServer R4900 G3 User manual

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