HP D7171A - NetServer - LPr Manuel utilisateur

HP NetServer LH 6000r

Rack Cabling Reference Guide

HP Part Number D9103-90008

Printed February 2000

Notice

The information contained in this document is subject to change without notice.

Hewlett-Packard makes no warranty of any kind with regard to this

material, including, but not limited to, the implied warranties of

merchantability and fitness for a particular purpose. Hewlett-Packard shall not

be liable for errors contained herein or for incidental or consequential damages in

connection with the furnishing, performance, or use of this material.

Hewlett-Packard assumes no responsibility for the use or reliability of its software

on equipment that is not furnished by Hewlett-Packard.

This document contains proprietary information that is protected by copyright.

All rights are reserved. No part of this document may be photocopied,

reproduced, or translated to another language without the prior written consent

of Hewlett-Packard Company.

APC®is a registered trademark of American Power Conversion Corporation.

Pentium®, Pentium®II Xeon, and Pentium®III Xeon are trademarks of Intel

Corporation.

Windows NT®and Windows 95®are registered trademarks of Microsoft in the

U.S. and other countries.

Torx®is a registered trademark of CamCar/Textron, Inc.

Hewlett-Packard Company

Network Server Division

Technical Communications / MS 45SLE

19055 Tantau Avenue

Cupertino, CA 95014-0770 USA

Audience Assumptions

The guide is for the person who installs, administers, and troubleshoots LAN servers.

Hewlett-Packard Company assumes you are qualified in the following areas:

•you are qualified in the servicing of computer equipment

•you are trained in recognizing hazards in products with hazardous energy

levels

•you are familiar with weight and stability precautions for rack installations.

iii

Contents

1 Preparation for Cabling the NetServer LH 6000r........................................ 1

About Cabling the LH 6000r........................................................................... 1

Before You Use this

Reference Guide

....................................................... 1

The HP NetServer LH 6000r...................................................................... 1

Site Preparation............................................................................................. 2

Site Preparation Checklist.......................................................................... 3

Site Preparation -- Circuit Breakers............................................................ 5

Rack Assembly and Cabling Cautions and Warnings..................................... 5

Unterminated Power Cords Require Licensed Electrician........................... 5

Prevent Electrical Shock............................................................................ 6

Prevent Damage to Components............................................................... 6

Generic Rack Assembly Steps....................................................................... 7

Suggested Method for Building an HP NetServer Rack Installation ............ 7

2 Rack Cabling References.......................................................................... 15

Rack Configuration Tools............................................................................. 15

Power Cabling References and Guidelines.................................................. 15

Power Considerations for the HP NetServer LH 6000r............................. 15

Power Cables and Components Available ............................................... 16

Power Distribution Units .......................................................................... 19

Guidelines for Powering the LH 6000r in a Rack...................................... 23

Power and Current for Estimating Supply Needs...................................... 24

Data Cabling References and Guidelines..................................................... 29

Key Cabling Guidelines Used in Developing a Rack Layout..................... 29

Cable Guide Placement Considerations Due to Data Cable Lengths........ 29

Cooling Requirements for the LH 6000r....................................................... 30

3 Procedure for Connecting and Routing Cables to the LH 6000r............. 31

Step 1: Prepare to Cable the HP NetServer LH 6000r.................................. 31

Assess How Components Will be Connected to the Server...................... 31

Attach Cable Guide to Rack Column........................................................ 31

Mount the Cable Management Arm ......................................................... 31

Mount Power Distribution Units................................................................ 32

Step 2: Connect the LH 6000r Data Cables to Peripheral Components ........ 32

Plan Data Connections............................................................................ 32

Contents

Overview of LH 6000r Data Connections ................................................. 32

Attach Data Cables to the Server............................................................. 35

Attach Data Cables to Other Components ............................................... 37

Step 3: Cable the LH 6000r for Power.......................................................... 37

Attaching Server and Component Power Cables...................................... 37

Determining and Balancing Current Draw on Two Circuits in One Rack... 38

100/120 VAC Rack Power Configurations................................................ 39

208V PDU Rack Power Configurations.................................................... 43

230/240V PDU Rack Power Configurations ............................................. 46

Redundant Power Configuration.............................................................. 49

High Density Configuration...................................................................... 50

Step 4: Managing and Routing Cables......................................................... 51

Using the Cable Management Arm and the Cable Guides........................ 51

Route and Tie Cables into the Management Arm..................................... 52

Step 5: Powering Up and Powering Down the Components in the Rack....... 55

Power Up Sequence................................................................................ 55

Power Down Considerations.................................................................... 55

A Cabling Checklist ...................................................................................... 57

B Considerations in Mounting the Redundant Switch ................................ 59

Index............................................................................................................... 63

1 Preparation for Cabling the

NetServer LH 6000r

About Cabling the LH 6000r

NOTE A checklist for the cabling process is included in Appendix A.

Before You Use this

Reference Guide

This Rack Cabling Reference Guide assumes that you have the rack assembly

process completed, have mounted the HP NetServer LH 6000r, and are ready to

cable the components in the rack enclosure.

If you want a high-level checklist to use in this process, see Appendix A "Cabling

Checklist."

For instructions on how to install the HP NetServer LH 6000r in a rack, consult

the Installation Road Map shipped with your rack or the Installation Guide

shipped with your NetServer unit.

NOTE For instructions on how to assemble other components in a

rack, please find and follow the documentation shipped with

your rack components. If there is no such documentation with

your rack and components, check the separately orderable

installation kit. Or, use the generic rack assembly process

described in this chapter.

The HP NetServer LH 6000r

This cabling reference is for the rack optimized HP NetServer LH 6000r shown in

Figure 1-1.

Chapter 1 Preparation for Cabling the HP NetServer LH 6000r

Figure 1-1. The HP NetServer LH 6000r

Site Preparation

You may want to copy and use the site preparation checklist in this section (Table

1-1). Doing so before you begin to install and cable the NetServer may reveal

actions you can take to support your success. Also be sure to read the section on

site preparation of circuit breakers.

Chapter 1 Preparation for Cabling the HP NetServer LH 6000r

Site Preparation Checklist

Table 1-1. Site Preparation Checklist

HP NetServer General Guidelines

Logical and physical network design provided

Server configuration parameters determined

Disk partition and directory structure determined

Required incoming power and data cabling in place

Working LAN, one working client, one working printer available (if integrating into an

existing network)

Software license requirements met

Networking peripherals connected

Floor

Ensure the floor where the NetServer rack is to be installed is level.

Assess floor strength and ensure it is sufficient to support the type of rack you have

ordered. (See the rack documentation included with your rack.)

Ensure sufficient area to accommodate your rack, including up to 24 inches (600 mm) rear

door clearance and 36 inches (900 mm) front door clearance.

Power

Correct size, type, and rating of receptacles, circuits, and circuit breakers; see the section

entitled “Site Preparation: Circuit Breakers.”

Locate close enough to power sources so that power cords will reach.

If raised floor, need floor tile(s) with a cutout for cables, all posts electrically grounded.

Facility for grounding each rack to earth connection to ensure earth ground continuity for

circuits to be used for rack mounted equipment

Chapter 1 Preparation for Cabling the HP NetServer LH 6000r

Table 1-1. Site Preparation Checklist (Continued)

Environment and Space Requirements

Must meet OSHA, local code, and HP specifications for safety and supportability (3 feet

minimum access in front and rear of electrical cabinets)

Side access of 24 inches improves cable routing and management

Optimal: 24 hour air conditioning (68 - 72 deg. F; 20 - 22 deg. C, 40 - 60% RH)

Minimum: Maintain temperature inside NetServer enclosure between 41 and 95 deg. F,

5 - 35 deg. C

Enough table or work space for console terminal and user guides

Bookshelf for documentation

Area to store equipment until time of installation

Ensure all equipment and/or shipping pallets can fit through doorways, hallways, and

into and out of elevators

Data & Voice Communications (Pre-Tested and Verified)

Voice phone located at system console terminal with cord long enough to reach all parts

of the rack installation

Phone line for remote support at each system

Ethernet, FDDI, Token Ring, or other network connection standard

System Parameters

Hostname

IP address

Subnet Mask

Gateway IP Address

Gateway Host Name

DTC Node Name

Hardware Configuration, Cables,

Availability of I/O paths and SCSI addresses for add-on devices

Availability of I/O backplane slots, memory slots, and

Valid, supportable configuration for added devices, interfaces, memory, and

Correct type and length of cables, as specified in order documents

Chapter 1 Preparation for Cabling the HP NetServer LH 6000r

Site Preparation -- Circuit Breakers

When you connect the HP NetServer LH 6000r to an AC power source, the server

temporarily draws a large “inrush current.” This occurs even when the system is in

standby mode. Inrush current is much greater than the server’s normal operating

needs. Generally, your external AC power source can handle the inrush current.

If you install several HP NetServers on one circuit, however, precautions are

necessary. For instance, if there is a power failure and power is then restored all

the servers immediately begin to draw inrush current at the same time. If the

circuit breakers on the incoming power line have insufficient capability, they may

trip and thus prevent the servers from powering up.

When preparing your site for installation, allow for the additional inrush current.

Consider the following before installing the server in your environment:

•In North America, a 20-amp-minimum circuit is to be used with one

NEMA AB1 class 14B breaker for each 16-amp Power Distribution Unit

that is to be connected to an HP NetServer LH 6000r.

•In Europe:

◊For a single LH 6000r unit in a rack, use a 16-amp-minimum circuit

with one IEC MCB C-type breaker for each 16-amp Power Distribution

Unit.

◊For multiple LH 6000r units in a rack, use a 16-amp-minimum circuit

with one IEC MCB D-type breaker for each 16-amp Power

Distribution Unit.

NOTE Some local codes do not allow a 16-amp device to be

connected to a 16-amp service. Consult a qualified electrician

or local regulatory authority before beginning electrical site

preparation.

Rack Assembly and Cabling Cautions and

Warnings

Unterminated Power Cords Require Licensed Electrician

In some cases in the 230/240V environment, the Uninterruptible Power Supply

(UPS) is shipped with a power cord that is unterminated. The reason is that the

current demand of a fully loaded rack may exceed the demand for the normal

circuit in some countries. Therefore, HP recommends that you have a qualified

electrician or electrical engineer analyze the current demand for each branch

circuit used by rack mounted equipment. Proper wiring and cord termination are

part of the same process.

Chapter 1 Preparation for Cabling the HP NetServer LH 6000r

Prevent Electrical Shock

WARNING Ensure site electrical circuits have reliable earth grounding.

Never operate products in any rack enclosure with the ground

connector disconnected. Although leakage current from any

one device may be minimal, cumulative leakage current of

equipment mounted in a rack may exceed 5mA, and could

reach 15mA. This level of current can be dangerous, unless a

reliable earth ground is in place. Thus, reliable ground

circuit continuity is vital to safe operation of this system.

WARNING Prevent shock hazard by disconnecting power and telephone

cords when you service or install components.

Prevent Damage to Components

CAUTION Rack optimized products are sensitive to static electricity

(ESD). When installing components, take precautions against

ESD damage. Wear a wrist-strap and use a static-dissipating

work surface connected to the server chassis when handling

printed circuit boards, memory devices, and processor chips or

modules. Ensure that the metal of the wrist-strap contacts your

skin and that the alligator clip is attached to a static-neutral

surface.

CAUTION Power up the components one at a time. Turning on an entire

rack at one time may create damaging and dangerous

electrical surges that could trip circuit breakers in the system.

Follow instructions in the section entitled “Power Up

Sequence” at the end of Chapter 3 to minimize current inrush.

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