Dell PowerEdge C8000 Manuel utilisateur

A QUICK AND EASY GUIDE TO SETTING UP THE DELL

POWEREDGE C8000

A Principled Technologies setup guide commissioned by Dell Inc.

TABLE OF CONTENTS

Table of contents .....................................................................................2

Introduction ............................................................................................3

Dell 42U rack.......................................................................................3

Installing the rails................................................................................4

Installing the C8000 chassis ................................................................5

Installing power cables .......................................................................6

Installing BMC cables..........................................................................7

Connecting Ethernet cables to management ports............................8

Installing network cables ................................................................. 10

Optional 40GbE PCI Express adapter card....................................... 11

Connecting the C8000XD storage sled ............................................ 12

PowerEdge C8000 weight considerations ....................................... 14

About Principled Technologies ...............................................................16

A Principled Technologies setup guide 3

A quick and easy guide to setting up the Dell PowerEdge C8000

INTRODUCTION

Highly dense computing solutions pack the processing

power you need into a small space to help you save on both capital

expenditure and operating expenses. Setting up large chassis

designed to hold multiple dense servers, or sleds, can appear a

daunting task. In this guide, we walk you through the simple

process for setting up a full Dell PowerEdge C8000 chassis. We set

up a full chassis in our own labs and also weighed various sled

configurations to help you best determine what will work in your

datacenter. With this simple guide, you can set up your own Dell

PowerEdge C8000 compute system in no time.

Dell 42U rack

For high-density servers, Dell recommends Dell PowerEdge

4220 rack enclosures. There are three versions of the PowerEdge

4220 rack: standard, deep, and wide. For a highly dense computing

solution such as the Dell PowerEdge C8000 chassis, we recommend

a sturdy and roomy rack such as the PowerEdge 4220D (deep rack)

or PowerEdge 4220W (wide rack). The PowerEdge 4220D rack is

slightly deeper than the other racks (600mm wide x 1,200mm

deep) and the PowerEdge 4220W rack is somewhat wider (750mm

wide x 1,070mm deep). Be sure to check the depth and width of

your available space for proper clearance prior to picking a server

rack. For our installation, we used a Dell PowerEdge 4220W rack

(see Figure 1). This rack has a static load capacity of 2,500 pounds

and extra width for cabling. Make sure you properly configure any

rack you use according to documentation prior to installing the

C8000 chassis. For most 4220W installations using cable service

loops, closing the front door may require you to reposition the

mounting rails further back in the rack. We repositioned the

mounting rails as such to accommodate SAS cabling for this

installation.

Figure 1: Dell PowerEdge 4220W rack.

A Principled Technologies setup guide 4

A quick and easy guide to setting up the Dell PowerEdge C8000

Installing the rails

1. Install cage nuts in the appropriate

position.

2. Push tabs and snap rails into place.

3. Add the stopping bracket. The smaller

holes in the stopping bracket act as a

washer. The bolt heads are smaller

than the riser opening and slide if the

stopping bracket is not installed.

(Note: Refer to the Getting Started

guide

for additional installation

details.)

http://www.dell.com/support/Manuals/us/en/19/product/poweredge-c8000

Figure 2: Rail and rack installation.

A Principled Technologies setup guide 5

A quick and easy guide to setting up the Dell PowerEdge C8000

Installing the C8000 chassis

Follow the steps below to install the C8000 chassis. Note: For best

weight distribution, place the storage sleds toward the bottom of the

server rack whenever possible, as they tend to weigh more than the

compute sleds.

1. Remove power sleds, compute sleds, and storage sleds from the

chassis prior to rack installation to lighten the load.

2. Use at least two people to slide the C8000 chassis onto the rails

until the front ears touch the cage nuts.

3. Screw the front ears into the cage nuts to secure the chassis in

place.

4. Re-insert the compute, storage, and power sleds.

5. We recommend installing all chassis and sleds before beginning

cable installation.

Figure 3: Chassis installation.

A Principled Technologies setup guide 6

A quick and easy guide to setting up the Dell PowerEdge C8000

Installing power cables

The steps below assume you have power distribution units (PDU) and rack-

mounted network switches installed in the rack according to the included

documentation. This document does not include installation instructions for these

items, as instructions can vary depending on the type you are installing. Note: Distribute

C8000 power across two power circuits for redundancy.

1. Plug power cables from one side of C8000 chassis into one AC power source and

the other side into a second AC power source. Be sure to run the power cables

down the side of server rack to ensure the cables do not block fans and limit

airflow.

2. Keep the power cables away from Ethernet cables.

3. Do not bend cables more than necessary during installation.

4. Do not place extra lengths of cable in front of cooling intake or exhaust ports.

5. Avoid mounting cables and cabling components in locations that block access to

other equipment within the rack.

6. We recommend labeling power cables for quick identification in the future.

7. If the rack is not full, we recommend allowing space for future cabling.

Figure 4: PDU installation.

A Principled Technologies setup guide 7

A quick and easy guide to setting up the Dell PowerEdge C8000

Installing BMC cables

You can access the Baseboard Management Controller (BMC) of a sled using

two modes of operation:

Non-Central Independent Mode, in which you access BMC through a

dedicated NIC using the sled’s BMC management port

Non-Central Consolidated Mode, in which you access BMC through a

shared NIC using the PowerEdge C8000 server enclosure’s BMC

management port and Ethernet port.

For our setup, we chose the Non-Central Consolidated Mode as this reduces the

number of Ethernet cables required for system management. To use Non-Central

Consolidated Mode, a BMC management cable must be installed inside the sleds. To

install the BMC management cable, you must open the sled and remove the hard drive

carrier and tray. Figure 5 shows the BMC cable installed.

Figure 5: BMC cable installation.

A Principled Technologies setup guide 8

A quick and easy guide to setting up the Dell PowerEdge C8000

Connecting Ethernet cables to management ports

For Non-Central Consolidated Mode, run Ethernet

cables from your network switch to the management port on

the front right of the Dell PowerEdge C8000 enclosure as the

yellow cables in Figure 6 show. You can also run Ethernet cables

to the rear BMC management port (see Figure 7). Before setting

up the BMC, connect the sled to a local console and configure

the BMC NIC in the BIOS F2 setup menu. In this configuration,

you need not plug a network cable into the management port

on the front of the compute sled (see Figure 8).

In the alternative management configuration, Non-

Central Independent Mode, you would plug the Ethernet cable

into the front BMC port on each compute sled as highlighted in

Figure 8. You would not plug any Ethernet cables into the BMC

chassis ports using the Non-Central Independent Mode

installation.

Figure 6: Management port Ethernet cable installation.

Figure 7: Rear BMC management port on chassis.

Figure 8: Management port

on compute sled.

A Principled Technologies setup guide 9

A quick and easy guide to setting up the Dell PowerEdge C8000

We ran cables through the front pass-through holes (see Figure 6) to make the

setup easier to see and understand in the pictures. While this is a valid configuration

option, please note that running the cables this way has the potential to allow heat from

the back of the server rack to come through those holes and create unfavorable

temperatures. To avoid such issues, you can run cables on top of the mounting rails

instead, using a cable lacing arm to keep cables neatly bundled (see Figure 9).

Figure 9: Using a cable lacing arm to bundle cables.

A Principled Technologies setup guide 10

A quick and easy guide to setting up the Dell PowerEdge C8000

Installing network cables

Each compute sled has two embedded 1Gb NIC connectors on the front of the

sled. Figure 10 shows a single bay C8220 sled, a dual bay C8220x GPU sled, and a dual

bay C8220x compute sled. Depending on the required bandwidth, these ports should be

connected to your network switch. We connected both NIC ports to our network switch

to allow for maximum bandwidth and configuration options as shown in Figure 11.

Use various lengths of Ethernet cable to ensure neat cabling. For example, use

14’ cables for the chassis in the bottom of the rack, use 7’ to 10’ cables for the middle

and upper chassis, and use 5’ lengths of Ethernet cable for the chassis mounted closest

to the switch. Group cables by function for better serviceability.

Figure 10: C8220, C8220X GPU

and C8220X compute sleds.

Figure 11: Ethernet cable installation with 1Gb NIC connectors.

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