Dell PowerEdge 2650 Manuale tecnico

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Dell™ Systems

Information Update

Notes, Notices, and Cautions

NOTE: A NOTE indicates important information that helps you make better use of your

computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you

how to avoid the problem.

CAUTION: A CAUTION indicates a potential for property damage, personal injury,

or death.

____________________

Information in this document is subject to change without notice.

Reproduction in any manner whatsoever without the written permission of Dell Inc.is strictly forbidden.

Trademarks used in this text: Dell and the DELL logo are trademarks of Dell Inc.; Microsoft and Windows are registered

trademarks of Microsoft Corporation; Intel is a registered trademark and Xeon is a trademark of Intel Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and

names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

September 2003 P/N 9Y853 Rev. A03

Information Update 1-1

This document provides updated information about the following topics for your system:

• Installing the SCSI cable strain-relief bracket

• System board connectors for memory modules

• Expansion card installation guidelines

• Installing the SCSI backplane daughter card

• Broadcom NetXtreme Gigabit Ethernet Server Adapter

• Microprocessor features

• System features

• Console redirection special key functions

• System memory features

Installing the SCSI Cable Strain-Relief Bracket

1Turn off the system, including any attached peripherals, and disconnect the system

from the electrical outlet.

2Ensure that the system is pushed back as far as possible in the rack.

3Connect any SCSI cables to the system before connecting the I/O cables.

NOTE: To use the strain-relief bracket, only two SCSI cables can be connected to each I/O

slot at a time. The cables cannot be stacked, one above the other; they must be either side-

by-side or placed diagonally to each other.

4Install the strain-relief bracket to the back of the system.

aInsert the ends of the three long portions of the strain-relief bracket into the

three matching holes in the rail bracket (see Figure 1-1).

bSecure the captive thumbscrew to the back of the system (see Figure 1-1).

5Connect the I/O cables to the back of the system.

For information on routing system cables, see your Rack Installation Guide.

1-2 Information Update

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Figure 1-1. Installing the Strain-Relief Bracket

matching rail bracket holes (3)strain-relief bracket

captive thumbscrew

Information Update 1-3

System Board Connectors for Memory Modules

See Figure 1-2 for the location and the updated description of the memory module

connectors on the system board.

For more information on system board connectors, see your Installation and Troubleshooting

Guide.

Figure 1-2. System Board Connectors for Memory Modules

BANK1_A connector

BANK1_B connector

BANK2_A connector

BANK2_B connector

BANK3_A connector

BANK3_B connector

1-4 Information Update

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Expansion Card Installation Guidelines

• Do not install full-length expansion cards in slot 1.

• You can install expansion cards of different operating speeds on the same bus; however,

the bus will operate at the slowest operating speed of the cards on that bus.

See Figure A-4 in your Installation and Troubleshooting Guide to identify expansion

card slots and buses.

Installing the SCSI Backplane Daughter Card

NOTICE: Before installing a SCSI backplane daughter card, back up your data to prevent

data loss.

To operate the SCSI backplane in a 2/3 split configuration, you must install a daughter card.

For more information on installing the SCSI backplane daughter card, see your Installation

and Troubleshooting Guide.

Broadcom NetXtreme Gigabit Ethernet Server

Adapter

When a Broadcom NetXtreme Gigabit Ethernet Server Adapter is installed and wake on

LAN (WOL) is enabled, your system’s connection speed is 10/100-Mbps. The Broadcom

NetXtreme Gigabit Server Adapter only supports 10/100-Mbps links when WOL is enabled

and the system is in Microsoft®Windows®2000 Server and Advanced Server hibernation.

When the operating system loads and the correct drivers are installed, your supported

connection speed is 10/100/1000 Mbps. It is recommended that when WOL support is

required, the Broadcom NetXtreme Gigabit Server Adapter is connected to a 10/100/1000

link partner in autonegotiation mode.

WOL is supported on only one Ethernet port in the system, which does not include the

system management port. If you are using an integrated NIC for this purpose, you must use

the NIC 1 connector. WOL is not supported on Broadcom NetXtreme Gigabit 5703

Ethernet adapters.

Information Update 1-5

Microprocessor Features

The Intel®Xeon™ microprocessors in your system provide NetBurst microarchitecture and

Hyper-Threading Technology to significantly increase microprocessor performance. Hyper-

Threading allows one physical microprocessor to appear as two logical processors to the

operating system and application programs. Hyper-Threading also allows each

microprocessor to simultaneously execute multiple tasks using shared hardware resources.

These new technology features in the microprocessor provide the following for

multithreaded tasks:

• Enhanced system performance

• Improved reaction and response time for the system

• Increased number of users that a system can support

• Increased number of transactions that can be executed simultaneously by the system

The CPU Information option in the System Setup program’s main screen displays

information about the different processors in the system (speed, cache size, and others.).

After the microprocessor information is displayed, you can enable or disable Hyper-

Threading by changing the setting of the Logical Processor option. (The default is

Enabled.)

You can find more information about Hyper-Threading Technology at developer.intel.com.

System Features

Your system contains the following new system features:

• Up to two Xeon microprocessors with a front-side bus speed of 533 MHz, an internal

operating speed of at least 2.0 GHz, and at least 512 KB of internal cache.

NOTE: Your system does not support microprocessors with different front-side buses.

• PC-2100 registered 266 MHz DDR SDRAM memory modules.

1-6 Information Update

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Console Redirection Special Key Functions

Table 1-1 lists additional ANSI escape sequences that represent a special key or function.

For additional information on console redirection and configuring special key functions,

see "Console Redirection" in your User’s Guide.

NOTE: ANSI escape-sequence key combinations listed in Table 1-1 are case-sensitive.

For example, to generate the character <Insert> you must press <Esc> and then

press <Shift><+>.

System Memory Features

Your system features redundant memory, which provides the system with a failover memory

bank when an active memory bank has excessive single-bit errors. This failover occurs

without the need to halt or restart the system. You can enable this feature in the System

Setup program. For more information about the System Setup program, see your User's

Guide.

To enable the Redundant Memory option in the System Setup program, all memory slots in

the system must be populated, and all memory modules must be of the same type and size.

The redundant memory options vary according to the number of populated memory banks

and whether identical memory modules are installed in each bank:

•Disabled — One or more banks are not populated, or not all memory modules are of

the same type and size.

•Disabled and Spare Bank Enabled — All three memory banks are populated with

memory modules of the same size and type.

Table 1-1. Additional ANSI Escape Sequences

Key(s) Supported Sequence Terminal Emulation

<Home> <Esc><h> ANSI

<End> <Esc><k> ANSI

<Insert> <Esc><Shift><+> ANSI

<Delete> <Esc><-> ANSI

<Page Up> <Esc><Shift><?> ANSI

<Page Down> <Esc></> ANSI

<Shift><Tab> <Esc><[><Shift><z> ANSI

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Dell™ 系统

信息更新

注、注意和警告

注：注表示可以帮助您更好地使用计算机的重要信息。

注意：注意表示可能会损坏硬件或导数据丢失，并告诉您如何避免此类问题。

警告：警告表示存在可能导致财产损失、人身伤害或死亡的潜在危险。

____________________

本文中的信息如有更改，恕不另行通知。

未经 Dell Inc. 书面许可，不准以何形式进行复制。

本文件中使用的商标：Dell 和DELL 徽标是 Dell Inc. 的商标；Microsoft 和Windows 是Microsoft Corporation 的

注册商标；Intel 和Xeon 分别是 Intel Corporation 的注册商标和商标。

本文件中述及的其它商标和产品名称是指拥有相应商标和名称的公司或其制造的产品。Dell Inc. 对本公司的商

标和产品名称之外的其它商标和产品名称不拥有何专利权。

2003 年9 月P/N 9Y853 Rev. A03

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