Supero SUPERSERVER 1027R-N3RF User manual

SUPERSERVER
1027R-N3RF
®
SUPER
USER'S MANUAL
Revision 1.0a

The information in this User’s Manual has been carefully reviewed and is believed to be accurate.
The vendor assumes no responsibility for any inaccuracies that may be contained in this document,
makes no commitment to update or to keep current the information in this manual, or to notify any
person or organization of the updates. Please Note: For the most up-to-date version of this
manual, please see our web site at www.supermicro.com.
Super Micro Computer, Inc. ("Supermicro") reserves the right to make changes to the product
described in this manual at any time and without notice. This product, including software and
documentation, is the property of Supermicro and/or its licensors, and is supplied only under a
license. Any use or reproduction of this product is not allowed, except as expressly permitted by
the terms of said license.
IN NO EVENT WILLSUPERMICRO BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
SPECULATIVE OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO
USE THIS PRODUCT OR DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. IN PARTICULAR, SUPERMICRO SHALL NOT HAVE LIABILITY FOR ANY
HARDWARE, SOFTWARE, OR DATASTORED OR USED WITHTHE PRODUCT, INCLUDING THE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.
Any disputes arising between manufacturer and customer shall be governed by the laws of Santa
Clara County in the State of California, USA. The State of California, County of Santa Clara shall
be the exclusive venue for the resolution of any such disputes. Super Micro's total liability for all
claims will not exceed the price paid for the hardware product.
FCC Statement: This equipment has been tested and found to comply with the limits for a Class
A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the manufacturer’s instruction manual, may cause harmful
interference with radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference, in which case you will be required to correct the interference at your
own expense.
California Best Management Practices Regulations for Perchlorate Materials: This Perchlorate
warning applies only to products containing CR (Manganese Dioxide) Lithium coin cells. “Perchlorate
Material-special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate”
WARNING: Handling of lead solder materials used in this
product may expose you to lead, a chemical known to
the State of California to cause birth defects and other
reproductive harm.
Manual Revision 1.0a
Release Date: March 26, 2014
Unless you request and receive written permission from Super Micro Computer, Inc., you may not
copy any part of this document.
Information in this document is subject to change without notice. Other products and companies
referred to herein are trademarks or registered trademarks of their respective companies or mark
holders.
Copyright © 2014 by Super Micro Computer, Inc.
All rights reserved.
Printed in the United States of America

iii
Preface
Preface
About This Manual
This manual is written for professional system integrators and PC technicians. It
provides information for the installation and use of the SuperServer 1027R-N3RF
Installation and maintainance should be performed by experienced technicians only.
TheSuperServer1027R-N3RFisahigh-endserverbasedontheSC116TS-R700WBP
1U rackmount chassis and the X9DRW-3F dual processor serverboard.
Manual Organization
Chapter 1: Introduction
The first chapter provides a checklist of the main components included with the
server system and describes the main features of the X9DRW-3F serverboard and
the SC116TS-R700WBP chassis.
Chapter 2: Server Installation
This chapter describes the steps necessary to install the SuperServer 1027R-N3RF
into a rack and check out the server configuration prior to powering up the system.
If your server was ordered without processor and memory components, this chapter
will refer you to the appropriate sections of the manual for their installation.
Chapter 3: System Interface
Refer here for details on the system interface, which includes the functions and
information provided by the control panel on the chassis as well as other LEDs
located throughout the system.
Chapter 4: Standardized Warning Statements for AC Systems
You should thoroughly familiarize yourself with this chapter for a general overview
of safety precautions that should be followed when installing and servicing the
SuperServer 1027R-N3RF.
Chapter 5: Advanced Serverboard Setup
Chapter 5 provides detailed information on the X9DRW-3F serverboard, including
the locations and functions of connections, headers and jumpers. Refer to
this chapter when adding or removing processors or main memory and when
reconfiguring the serverboard.

SUPERSERVER 1027R-N3RF USER'S MANUAL
iv
Chapter 6: Advanced Chassis Setup
Refer to Chapter 6 for detailed information on the SC116TS-R700WBP server
chassis. You should follow the procedures given in this chapter when installing,
removing or reconfiguring SAS/SATA or peripheral drives and when replacing
system power supply units and cooling fans.
Chapter 7: BIOS
The BIOS chapter includes an introduction to BIOS and provides detailed information
on running the CMOS Setup Utility for the X9DRW-3F serverboard.
Appendix A: BIOS Error Beep Codes
Appendix B: System Specifications

Notes
Preface
v

vi
Table of Contents
Chapter 1 Introduction
1-1 Overview .........................................................................................................1-1
1-2 Serverboard Features..................................................................................... 1-2
Processors ......................................................................................................1-2
Memory ...........................................................................................................1-2
SAS/SATA ......................................................................................................1-2
Onboard Controllers/Ports .............................................................................. 1-3
Graphics Controller......................................................................................... 1-3
Other Features................................................................................................ 1-3
1-3 Server Chassis Features ................................................................................1-3
System Power................................................................................................. 1-3
Hard Drive Subsystem....................................................................................1-3
PCI Expansion Slots....................................................................................... 1-3
Front Control Panel.........................................................................................1-4
I/O Backplane.................................................................................................. 1-4
Cooling System............................................................................................... 1-4
1-4 Advanced Power Management.......................................................................1-4
Intel® Intelligent Power Node Manager (NM).................................................1-4
Manageability Engine (ME)............................................................................. 1-4
1-5 Contacting Supermicro....................................................................................1-6
Chapter 2 Server Installation
2-1 Overview .........................................................................................................2-1
2-2 Unpacking the System....................................................................................2-1
2-3 Preparing for Setup.........................................................................................2-1
Choosing a Setup Location............................................................................. 2-2
2-4 Warnings and Precautions..............................................................................2-2
Rack Precautions............................................................................................ 2-2
Server Precautions..........................................................................................2-2
Rack Mounting Considerations....................................................................... 2-3
Ambient Operating Temperature................................................................2-3
Reduced Airflow .........................................................................................2-3
Mechanical Loading ................................................................................... 2-3
Circuit Overloading..................................................................................... 2-4
Reliable Ground ......................................................................................... 2-4
2-5 Installing the System into a Rack ...................................................................2-5
Identifying the Sections of the Rack Rails......................................................2-5
SUPERSERVER 1027R-N3RF USER'S MANUAL

vii
Inner Rails.......................................................................................................2-6
Outer Rails......................................................................................................2-7
2-6 Checking the Serverboard Setup.................................................................. 2-10
2-7 Checking the Drive Bay Setup.......................................................................2-11
Chapter 3 System Interface
3-1 Overview .........................................................................................................3-1
3-2 Control Panel Buttons..................................................................................... 3-1
Reset...............................................................................................................3-1
Power.............................................................................................................. 3-1
UID.................................................................................................................. 3-2
3-3 Control Panel LEDs ........................................................................................3-3
Information LED.............................................................................................. 3-3
NIC2................................................................................................................ 3-3
NIC1................................................................................................................ 3-3
HDD................................................................................................................. 3-3
Power.............................................................................................................. 3-4
3-4 Hard Drive Carrier LEDs................................................................................. 3-4
3-5 Power Supply LEDs........................................................................................3-4
700W Power Supply LED ...............................................................................3-4
Chapter 4 Standardized Warning Statements for AC Systems
4-1 About Standardized Warning Statements.......................................................4-1
Warning Definition........................................................................................... 4-1
Installation Instructions.................................................................................... 4-4
Circuit Breaker ................................................................................................ 4-5
Power Disconnection Warning........................................................................4-6
Equipment Installation.....................................................................................4-8
Restricted Area................................................................................................ 4-9
Battery Handling............................................................................................ 4-10
Redundant Power Supplies ..........................................................................4-12
Backplane Voltage ........................................................................................ 4-13
Comply with Local and National Electrical Codes........................................ 4-14
Product Disposal........................................................................................... 4-15
Easy Swap Fan Warning ..............................................................................4-16
Power Cable and AC Adapter ...................................................................... 4-18
Table of Contents

viii
Chapter 5 Advanced Serverboard Setup
5-1 Handling the Serverboard...............................................................................5-1
Precautions .....................................................................................................5-1
Unpacking .......................................................................................................5-1
5-2 Processor and Heatsink Installation................................................................5-2
Installing a Passive CPU Heatsink .................................................................5-6
Removing the Heatsink................................................................................... 5-7
5-3 Connecting Cables..........................................................................................5-7
Connecting Data Cables.................................................................................5-7
Connecting Power Cables ..............................................................................5-8
Connecting the Control Panel......................................................................... 5-8
5-4 I/O Ports..........................................................................................................5-9
5-5 Installing Memory.......................................................................................... 5-10
Memory Support............................................................................................5-10
5-6 Adding PCI Expansion Cards .......................................................................5-12
5-7 Serverboard Details ...................................................................................... 5-13
X9DRW-3F Quick Reference........................................................................ 5-14
5-8 Connector Definitions ...................................................................................5-16
5-9 Jumper Settings............................................................................................ 5-25
Explanation of Jumpers ................................................................................5-25
5-10 Onboard Indicators........................................................................................5-27
5-11 SATA Drive Connections............................................................................... 5-28
5-12 Installing Drivers............................................................................................ 5-29
SuperDoctor III.............................................................................................. 5-30
5-13 Serverboard Battery...................................................................................... 5-32
Chapter 6 Advanced Chassis Setup
6-1 Static-Sensitive Devices..................................................................................6-1
Precautions .....................................................................................................6-1
6-2 Control Panel .................................................................................................. 6-2
6-3 System Fans................................................................................................... 6-3
System Fan Failure......................................................................................... 6-4
6-4 Installing the Air Shroud.................................................................................. 6-5
Checking the Airflow ....................................................................................... 6-5
6-5 Drive Bay Installation/Removal.......................................................................6-6
Accessing the Drive Bays...............................................................................6-6
Hard Drive Installation.....................................................................................6-6
6-6 Expansion Card Setup....................................................................................6-8
6-7 Power Supply.................................................................................................. 6-9
Power Supply Failure...................................................................................... 6-9
SUPERSERVER 1027R-N3RF USER'S MANUAL

ix
Table of Contents
Chapter 7 BIOS
7-1 Introduction...................................................................................................... 7-1
Starting the Setup Utility................................................................................. 7-1
7-2 Main Menu ...................................................................................................... 7-1
System Time/System Date ............................................................................. 7-2
7-3 Advanced Settings Menu................................................................................7-2
7-3 Event Logs....................................................................................................7-22
7-4 IPMI...............................................................................................................7-24
7-5 Boot...............................................................................................................7-26
7-6 Security ......................................................................................................... 7-27
7-7 Save & Exit ................................................................................................... 7-27
Appendix A BIOS Error Beep Codes
Appendix B System Specifications

x
SUPERSERVER 1027R-N3RF USER'S MANUAL
Notes

Chapter 1
Introduction
1-1 Overview
Supermicro's SuperServer 1027R-N3RF is a dual processor, 1U rackmount server.
The 1027R-N3RF is a high-end server comprised of two main subsystems: the
SC116TS-R700WBP 1U server chassis and the X9DRW-3F dual processor
serverboard. Please refer to our web site for information on operating systems that
have been certified for use with the system (www.supermicro.com).
In addition to the serverboard and chassis, various hardware components have
been included with the 1027R-N3RF, as listed below:
• Two (2) 1U passive CPU heat sink (SNK-P0047PS)
• One (1) SC815/113/116 Intel DP X9, X8 PC air shroud (MCP-310-19002-0N)
• Five (5) 40x56mm 4-pin PWM fans (FAN-0101L4)
• One (1) 70-cm front control cable 20-pin-to-20-pin w/tube (CBL-0335L)
• One (1) 77-cm 2CH USB 2.0 10-pin-to-10-pin cable (CBL0263L)
• SAS/SATA Accessories
One (1) HD Backplane (BPN-SAS-116TQ)
One (1) 30 AWG, 23-with/25.5-cm SB, S cable (CBL-0118L-01)
One (1) 30 AWG, 43/43/33/3-cm with/43-cm SB, S cable (CBL-0388L-01)
One (1) 61.5-cm 8-pin-to-8-pin cable for SGPIO, PBF cable (CBL-0157L-01)
Two (2) 65-cm SATA round S-RA PBF cable (CBL-0230L)
Ten (10) 2.5" hot-swap hard disk drive trays (MCP-220-00047-0B)
• One (1) set quick release outer rail for 1U chassis (MCP-290-00101-0N)
• One (1) set quick release inner rail, front for 1U chassis (MCP-290-00107-0N)
• One (1) set quick release inner rail, extension for 1U chassis (MCP-290-00111-
0N)
• One (1) riser card (RSC-R1UW-2E16-O-P)
Chapter 1: Introduction
1-1

1-2
SUPERSERVER 1027R-N3RF USER'S MANUAL
Note: For your system to work properly, please follow the links below to download
all necessary drivers/utilities and the user’s manual for your server.
• Supermicro product manuals: http://www.supermicro.com/support/manuals/
• Product drivers and utilities: ftp://ftp.supermicro.com
• Product safety information:
http://super-dev/about/policies/safety_information.cfm
• If you have any questions, please contact our support team at:
[e-mail]
1-2 Serverboard Features
At the heart of the SuperServer 1027R-N3RF lies the X9DRW-3F, a dual processor
serverboard based on the Intel PCH C606 chipset. Below are the main features of
the X9DRW-3F. (See Figure 1-1 for a block diagram of the chipset).
Processors
The X9DRW-3F supports single or dual E5-2600 Series processors in
Socket R LGA2011 type sockets. Please refer to our web site for a complete listing
of supported processors (www.supermicro.com).
Memory
The X9DRW-3F has sixteen (16) single/dual/tri/quad channel 240-pin DIMM sockets
that can support up to 512 GB of DDR3 1600/1333/1066/800 MHz speed registered
ECC RDIMM/LRDIMM SDRAM in two-channel memory bus. Memory sizes of
1GB, 2GB, 4GB, 8GB, 16GB and 32GB @ 1.35V/1.5V voltages are supported.
Please refer to Chapter 5 for installing memory.
Note: LRDIMM (Reduced Load) memory supports only 1333/1066/800 MHz speed
memory.
SAS/SATA
An on-chip (Intel PCH C606) SATA controller is integrated into the X9DRW-3F to
provide a six-port SATA subsystem (two SATA 3.0 and four SATA 2.0 ports), which
is RAID 0, 1, 5 and 10 (Windows SATA) or RAID 0, 1 and 10 (LINUX) supported.
The SATA drives are hot-swappable units.
The onboard Intel PCH C606 chip also functions as a SAS controller for an eight
port eight SAS subsystem (RAID 0, 1, 5, 6, 10, 50 and 60). SAS drives are hot-
swappable.

Chapter 1: Introduction
1-3
Note: You must have RAID set up to enable the hot-swap capability of the SATA
drives. Documentation on RAID setup guidelines can be found on our web site.
Onboard Controllers/Ports
The color-coded I/O ports on the X9DRW-3F include two COM ports (one header
and one port), a VGA(monitor) port, eight USB 2.0 ports (4x rear, 1x header for four
front panel), two gigabit Ethernet ports and one dedicated IPMI LAN port.
Note: For more information on IPMI configuration, please refer to the IPMI User's
Guide posted on our website at http://www.supermicro.com/support/manuals/
Graphics Controller
The X9DRW-3F features an integrated Renesas Base-board Controller (BMC) chip,
which also acts as a video controller.
Other Features
Other onboard features that promote system health include onboard voltage
monitors, auto-switching voltage regulators, chassis and CPU overheat sensors,
power management, AC power loss recovery, virus protection and BIOS rescue.
1-3 Server Chassis Features
The SC116TS-R700WBP is Supermicro's third-generation 1U chassis and features
ten 2.5" hard drive bays and two high-efficiency power supplies. The following is a
general outline of the main features of the SC116TS-R700WBP chassis.
System Power
When configured as a SuperServer 1027R-N3RF, the SC116TS-R700WBP chassis
includes two redundant hot-swappable 700 Watt power supplies. In the unlikely
event your power supply fails, replacement is simple and can be done without tools.
Hard Drive Subsystem
The SC116TS-R700WBP chassis was designed to support ten hot-swap SATA
hard drives.
PCI Expansion Slots
A riser card (RSC-R1UW-2E16-O-P) on the left side of the chassis can support
two full-height, 6.6" length PCI-E 3.0 x16 cards. See section 5-6 for further details.)

1-4
SUPERSERVER 1027R-N3RF USER'S MANUAL
Front Control Panel
The SC116TS-R700WBP control panel provides important system monitoring and
control information. LEDs indicate power on, network activity, hard disk drive activity
and a UID (Universal Information) LED. Also present are a main power button, a
system reset button and a UID button.
I/O Backplane
The SC116TS-R700WBP is an extended ATX form factor chassis that is designed
to be used in a 1U rackmount configuration. Ports on the I/O backplane include
one COM port, a VGA port, four USB 2.0 ports, two gigabit Ethernet ports and one
IPMI port. A UID (Unit Identifier) button and LED are also located beside the LAN2
Ethernet port.
Cooling System
The SC116TS-R700WBP chassis has an innovative cooling design that features five
sets of 4-cm counter-rotating fans located in the middle section of the chassis and
provides space for one additional fan if required. These fans are 1U high and are
powered by 4-pin connectors, with chassis fan speed controlled by IPMI software.
The power supply module also includes a cooling fan.
1-4 Advanced Power Management
Intel® Intelligent Power Node Manager (NM)
The Intel®Intelligent Power Node Manager (IPNM) provides your system with
real-time thermal control and power management for maximum energy efficiency.
Although IPNM Specification Version 1.5 is supported by the BMC (Baseboard
Management Controller), your system must also have IPNM-compatible
Manageability Engine (ME) firmware installed to use this feature.
Manageability Engine (ME)
The Manageability Engine, which is an ARC controller embedded in the IOH (I/O
Hub), provides Server Platform Services (SPS) to your system. The services
provided by SPS are different from those proveded by the ME on client platforms.

Chapter 1: Introduction
1-5
Figure 1-1. Intel PCH C606 Chipset:
System Block Diagram
Note: This is a general block diagram. Please see Chapter 5 for details.
PROCESSOR
PROCESSOR
DDR3 DIMM
#1
#2
DDR3 DIMM
DDR3 DIMM
DDR3 DIMM
DDR3 DIMM
#2
#1
DDR3 DIMM
G
A
CPU Rear
DDR3 DIMM
B
DDR3 DIMM
D
C
H
F
E
Socket 00
Socket 01
#1
#2
#1
#2
#1
#2 #1
#2
#1
#2 #1
#2
P0
P0
P1
P1
x1
x16
x16
x16
J1
Right Slot
PCIE 3.0x16
DMI
PE3 PE2 PE1
QPI
QPI
CPU Front
DMI
PE1PE2PE3
P0PE3
J3
Left Slot
PCIE 3.0x16+x16
x4 (Lane4~7)
UL1
I350AM2
JLAN1
RJ45 JLAN2
RJ45
Lane Reversal & Polarity Inversion DMI: Lane Reversal
BIOS
SPI Flash
SPI
DMI
PEG [0...3]
PET8 USB [10,11] LPC
SSB
PCH C606
Gen 3 [1...7]
SATA [0...5]
USB [0...9]
SATA Gen3
SATA Gen2
SATA0
SATA1
SATA2
SATA3
SATA4
SATA5
DDR3 RAM
Renesas
VGA BMC
TPM Chip
Super I/O
W83527 NCT7904D
HW Monitor
VGA
CONN PHY
RTL8211E
IPMI LAN
RJ45
REAR
HDR 2X5
REAR
3Gbps
6Gbps
JSM2(SCU4~7)
(3F only)
JSM1(SCU0~3)

1-6
SUPERSERVER 1027R-N3RF USER'S MANUAL
1-5 Contacting Supermicro
Headquarters
Address: Super Micro Computer, Inc.
980 Rock Ave.
San Jose, CA 95131 U.S.A.
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
Web Site: www.supermicro.com
Europe
Address: Super Micro Computer B.V.
Het Sterrenbeeld 28, 5215 ML
's-Hertogenbosch, The Netherlands
Tel: [phone]
Fax: [phone]
Email: [email protected] (General Information)
[email protected] (Technical Support)
[email protected] (Customer Support)
Asia-Pacific
Address: Super Micro Computer, Inc.
3F, No. 150, Jian 1st Rd.
Zhonghe Dist., New Taipei City 23511
Taiwan (R.O.C)
Tel: [phone]
Fax: [phone]
Web Site: www.supermicro.com.tw
Technical Support:
Email: [email protected]
Tel: [phone]

Chapter 2: Server Installation
2-1
Chapter 2
Server Installation
2-1 Overview
This chapter provides a quick setup checklist to get your SuperServer 1027R-N3RF
up and running. Following these steps in the order given should enable you to have
the system operational within a minimum amount of time. This quick setup assumes
that your system has come to you with the processors and memory preinstalled. If
your system is not already fully integrated with a serverboard, processors, system
memory etc., please turn to the chapter or section noted in each step for details on
installing specific components.
2-2 Unpacking the System
You should inspect the box the SuperServer 1027R-N3RF was shipped in and note
if it was damaged in any way. If the server itself shows damage you should file a
damage claim with the carrier who delivered it.
Decide on a suitable location for the rack unit that will hold the 1027R-N3RF. It
should be situated in a clean, dust-free area that is well ventilated. Avoid areas
where heat, electrical noise and electromagnetic fields are generated. You will also
need it placed near a grounded power outlet. Be sure to read the Rack and Server
Precautions in the next section.
2-3 Preparing for Setup
The box the SuperServer 1027R-N3RF was shipped in should include two sets of
rail assemblies, two rail mounting brackets and the mounting screws you will need
to install the system into the rack. Follow the steps in the order given to complete
the installation process in a minimum amount of time. Please read this section in
its entirety before you begin the installation procedure outlined in the sections that
follow.

2-2
SUPERSERVER 1027R-N3RF USER'S MANUAL
Choosing a Setup Location
• Leave enough clearance in front of the rack to enable you to open the front door
completely (~25 inches) and approximately 30 inches of clearance in the back
of the rack to allow for sufficient airflow and ease in servicing.This product is for
installation only in a Restricted Access Location (dedicated equipment rooms,
service closets and the like).
• This product is not suitable for use with visual display work place devices
acccording to §2 of the the German Ordinance for Work with Visual Display Units.
2-4 Warnings and Precautions
Warning! To prevent bodily injury when mounting or servicing this unit in a
rack, you must take special precautions to ensure that the system remains stable.
The following guidelines are provided to ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in
the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom
to the top with the heaviest component at the bottom of the rack.
• If the rack is provided with stabilizing devices, install the stabilizers before
mounting or servicing the unit in the rack.
Rack Precautions
• Ensure that the leveling jacks on the bottom of the rack are fully extended to
the floor with the full weight of the rack resting on them.
• In single rack installation, stabilizers should be attached to the rack. In multiple
rack installations, the racks should be coupled together.
• Always make sure the rack is stable before extending a component from the
rack.
• You should extend only one component at a time - extending two or more
simultaneously may cause the rack to become unstable.
Server Precautions
• Review the electrical and general safety precautions in Chapter 4.
• Determine the placement of each component in the rack before you install the
rails.

Chapter 2: Server Installation
2-3
• Install the heaviest server components on the bottom of the rack first, and then
work up.
• Use a regulating uninterruptible power supply (UPS) to protect the server from
power surges, voltage spikes and to keep your system operating in case of a
power failure.
• Allow the hot plug SATA drives and power supply modules to cool before
touching them.
• Always keep the rack's front door and all panels and components on the servers
closed when not servicing to maintain proper cooling.
Rack Mounting Considerations
Warning: Do not pick up the server with the front handles. They are
designed to pull the system from a rack only.
Stability Hazard: The rack stabilizing mechanism must be in place, or the
rack must be bolted to the floor before you slide the unit out for servicing. Failure
to stabilize the rack can cause the rack to tip over.
Ambient Operating Temperature
If installed in a closed or multi-unit rack assembly, the ambient operating
temperature of the rack environment may be greater than the ambient temperature
of the room. Therefore, consideration should be given to installing the equipment
in an environment compatible with the manufacturer’s maximum rated ambient
temperature (Tmra).
Reduced Airflow
Equipment should be mounted into a rack so that the amount of airflow required
for safe operation is not compromised.
Mechanical Loading
Equipment should be mounted into a rack so that a hazardous condition does not
arise due to uneven mechanical loading.

2-4
SUPERSERVER 1027R-N3RF USER'S MANUAL
Circuit Overloading
Consideration should be given to the connection of the equipment to the power
supply circuitry and the effect that any possible overloading of circuits might have
on overcurrent protection and power supply wiring. Appropriate consideration of
equipment nameplate ratings should be used when addressing this concern.
Reliable Ground
A reliable ground must be maintained at all times. To ensure this, the rack
itself should be grounded. Particular attention should be given to power supply
connections other than the direct connections to the branch circuit (i.e. the use of
power strips, etc.).