Dell PowerEdge 1950 Technical manual

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Dell™ PowerEdge™ 1950 Systems
Information Update
信息更新
Mise à jour des informations
Aktuelle Informationen
アップデート情報
설명서 갱신본
Actualización de información

www.dell.com | support.dell.com
Dell™ PowerEdge™ 1950 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.
© 2006 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and PowerEdge are trademarks of Dell Inc.; Intel and Xeon are registered trademarks of
Intel Corporation; Red Hat is a registered trademark of Red Hat, Inc.; SUSE is a registered trademark of Novell Inc. 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.
October 2006 P/N FD259 Rev. A04

Information Update 3
This document provides updated information for your system on the following topics:
• Quad-core processor upgrades
• Memory mirroring with fully buffered DIMMs
• System message update
• LCD status message update
• System Setup program update
• Linux enumeration of NICs
• Autocool operation
Quad-Core Processor Upgrades
If the front of your system chassis is labeled with a "II," your system is upgradeable to the Quad-Core
Intel®Xeon®Processor 5300 series when these processors become available. See support.dell.com for
information on processor availability and upgrade options for your system.
Memory Mirroring With Fully Buffered DIMMs
As in the previous generation of memory mirroring technology, mirroring with fully buffered DIMMs
(FBDs) provides enhanced protection from memory failure events, enabling a more robust computing
environment. The new generation of FBD memory mirroring provides a higher level of system reliability
by providing protection against more complex, but rare, failures such as a multi-bit error on a pair of
FBDs within a mirrored branch.
However, a limitation in the chipset prevents the FBD memory mirroring from recovering from a small
set of failures that could occur in specific circumstances. These circumstances include rare Advanced
Memory Buffer (AMB) hardware failures or a possible short circuit in the FBD connector. Although
unlikely, this means that FBD memory mirroring cannot assure failover in all possible circumstances.
System Message Update
Table 1-1 lists a new system message and the probable cause and corrective action when the message
appears. System messages appear on the screen to notify you of a possible problem with the system.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of
the components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.

4Information Update
LCD Status Messages Update
Table 1-2 lists updates to the LCD status messages that can occur and the probable cause for each
message. The LCD messages refer to events recorded in the system event log (SEL). For information on
the SEL and configuring system management settings, see your systems management software
documentation.
NOTE: Each diagnostic LCD message is assigned a priority. The highest priority messages will supersede
any group of messages with a lower priority.
Table 1-1. System Messages
Message Causes Corrective Actions
The FBD link to the
following DIMM failed
to train: DIMM x
FBD training error -
The following memory
branch has been disabled:
Branch x
An error has occurred on the
FBD channel that contains the
specified DIMM. A fault is
indicated on the link adjacent
to the DIMM caused by a faulty
condition in either the specified
DIMM, the next DIMM in the
channel, or possibly the system
board. When this error occurs,
the other FBD branch in the
memory pair is disabled,
resulting in the second error
message.
Reseat all of the DIMMs on the
indicated FBD channel. See
"Memory" in the Hardware Owner’s
Manual for information about the
FBD branches and channels. See
"Troubleshooting System Memory" in
the Hardware Owner’s Manual. If the
problem persists, see "Getting Help"
in the Hardware Owner’s Manual.
Table 1-2. LCD Status Messages
Code Text Causes Corrective Actions
E1118 CPU Temp Interface The BMC is unable to determine
the CPU(s) temperature status.
Consequently, the BMC increases
the CPU fan speed to maximum
as a precautionary measure.
Turn off power to the system
and restart the system. If the
problem persists, see "Getting
Help" in the Hardware Owner’s
Manual.
E122B 0.9 V Over Voltage 0.9 V regulator voltage has exceeded
the allowable voltage range.
See "Getting Help" in the
Hardware Owner’s Manual.
E122C CPU Power Fault A voltage regulator failure was detected
when the processor regulator(s) was
enabled.
See "Getting Help" in the
Hardware Owner’s Manual.

Information Update 5
System Setup Program Update
This section lists updates to the System Setup program about features that are available on some
systems.
Main Screen
Figure 1-1 shows the updated main System Setup program screen. Table 1-3 lists a new option
on the System Setup main screen.
Figure 1-1. Main System Setup Program Screen
Integrated Devices Screen
Table 1-4 lists a new Integrated Devices screen option.
Table 1-3. System Setup Program Options
Option Description
Boot Sequence Retry
(Disabled default)
Enables or disables the Boot Sequence Retry feature. When set to Enabled,
the system re-attempts the boot sequence after a 30-second timeout if the previous
boot attempt failed.

6Information Update
Memory Screen
Table 1-5 lists a new option on the Memory screen.
Linux Enumeration of NICs
Linux operating system versions that use the udev kernel device manager enumerate the NICs differently
than earlier Linux versions that used the devfs device manager. Although this does not affect system
functionality, when using Red Hat®Enterprise Linux (version 4) or SUSE®Linux Enterprise Server 9
operating systems, the NICs are enumerated in reverse: NIC1 is configured as eth1 instead of eth0,
and NIC2 is configured as eth0 instead of eth1. For information on how to change the default device
enumerations, see the "Network Interface Card Naming" white paper available at linux.dell.com.
AutoCool Operation
Whenever your system is in standby mode (powered down but still connected to AC power), internal
components may generate enough heat for the system to turn on the cooling fans periodically. When
this occurs, the LCD lights a solid blue background and displays the message Autocool. The system
also lights the power button LED and the power supply LED.
Autocool occurs automatically and is a normal function of your system. The frequency and duration of
the Autocool operation will vary according to conditions such as the ambient heat or where the system
is configured in a rack.
NOTE: Although the power button and power supply LEDs are on when the Autocool feature is operating, the
system is still powered down in standby mode. There are no means for controlling the Autocool mode or turning
the fans off when they are engaged. The feature is solely controlled by the system BMC firmware.
Table 1-4. Integrated Devices Screen Options
Option Description
I/OAT DMA Engine
(Disabled default)
Enables or disables the I/O Acceleration Technology (I/OAT) option. When set
to Enabled, I/OAT reduces system CPU usage for applications that use TCP by
offloading part of TCP receive operation to the DMA engine.
Table 1-5. Memory Screen Options
Option Description
Low Power Mode
(Disabled default)
Enables or disables Low Power Mode of the memory. When set to Enabled, the
memory runs at reduced speed to conserve power. Disabled sets the memory to run
at full speed.

www.dell.com | support.dell.com
Dell™ PowerEdge™ 1950 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：警告表示可能会导致财产损失、人身伤害甚至死亡。
____________________
本说明文件中的信息如有更改，恕不另行通知。
© 2006 Dell Inc. 版权所有，翻印必究。
未经 Dell Inc. 书 许可，严禁以任何形式进行复制。
本文中使用的商标：Dell、DELL 徽标和 PowerEdge 是Dell Inc. 的商标； Intel 和Xeon 是Intel Corporation 的注册商标； Red Hat
是Red Hat, Inc. 的注册商标； SUSE 是Novell Inc. 的注册商标。本文件中述及的其它商标或产品名称可能指拥有相应商标或名称
的实体或其生产的产品。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任何专有权。
2006 年10 月P/N FD259 修订版 A04