Supero AS2021M-T2R+ User manual

AS2021M-T2R+
AS2021M-82R+
USER’S MANUAL
1.0a
SUPER ®

Manual Revision 1.0a
Release Date: January 13, 2009
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, if any,
and documentation may not, in whole or in part, be copied, photocopied, reproduced, translated or
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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 WITH THE PRODUCT, INCLUDINGTHE
COSTS OF REPAIRING, REPLACING, INTEGRATING, INSTALLING OR RECOVERING SUCH
HARDWARE, SOFTWARE, OR DATA.
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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
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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.
Unless you request and receive written permission from Super Micro Computer, Inc., you may not
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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
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Copyright © 2009 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 2021M-T2R+/2021M-82R+
server. Installation and maintenance should be performed by experienced techni-
cians only.
The 2021M-T2R+/2021M-82R+ is a high-end server based on the SC825TQ-
R700LP/SC825S2-R700LP 2U rackmount chassis and the H8DME-2/H8DM8-2, a
dual processor serverboard that supportsAMD Opteron 2000 series processors and
up to 32/32/64 GB of registered ECC DDR2-667/533/400 SDRAM.
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 H8DME-2/H8DM8-2
serverboard and the SC825TQ-R700LP/SC825S2-R700LPchassis, which comprise
the 2021M-T2R+/2021M-82R+ .
Chapter 2: Server Installation
This chapter describes the steps necessary to install the 2021M-T2R+/2021M-82R+
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 se ctions 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.

AS2021M-T2R+/2021M-82R+ User's Manual
iv
Chapter 4: System Safety
You should thoroughly familiarize yourself with this chapter for a general overview
of safety precautions that should be followed when installing and servicing the
1011S-MR2.
Chapter 5: Advanced Serverboard Setup
Chapter 5 provides detailed information on the H8DME-2/H8DM8-2 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.
Chapter 6: Advanced Chassis Setup
Refer to Chapter 6 for detailed information on the SC825TQ-R700LP/SC825S2-
R700LPserver chassis. You should follow the procedures given in this chapter
when installing, removing or reconfiguring SATA/SCSI or peripheral drives and when
replacing a system power supply or cooling fan.
Chapter 7: BIOS
The BIOS chapter includes an introduction to BIOS and provides detailed informa-
tion on running the CMOS Setup Utility.
Appendix A: BIOS Error Beep Codes
Appendix B: BIOS POST Checkpoint Codes
Appendix C: System Specifications

v
Preface
Notes

vi
Table of Contents
Preface
About This Manual ...................................................................................................... iii
Manual Organization ................................................................................................... iii
Chapter 1: Introduction
1-1 Overview ......................................................................................................... 1-1
1-2 Serverboard Features ..................................................................................... 1-2
1-3 Server Chassis Features ................................................................................ 1-4
1-4 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
2-4 Installing the System into a Rack ................................................................... 2-4
2-5 Checking the Serverboard Setup ................................................................... 2-8
2-6 Checking the Drive Bay Setup ..................................................................... 2-10
Chapter 3: System Interface
3-1 Overview ......................................................................................................... 3-1
3-2 Control Panel Buttons .................................................................................... 3-1
Reset ........................................................................................................ 3-1
Power ....................................................................................................... 3-1
3-3 Control Panel LEDs ........................................................................................ 3-2
Power Fail ................................................................................................ 3-2
Overheat/Fan Fail .................................................................................... 3-2
NIC1 ......................................................................................................... 3-2
NIC2 ......................................................................................................... 3-2
HDD .......................................................................................................... 3-3
Power ....................................................................................................... 3-3
3-4 Drive Carrier LEDs ......................................................................................... 3-3
Chapter 4: System Safety
4-1 Electrical Safety Precautions .......................................................................... 4-1
4-2 General Safety Precautions ........................................................................... 4-2
4-3 ESD Precautions ............................................................................................ 4-3
4-4 Operating Precautions .................................................................................... 4-4
AS2021M-T2R+/2021M-82R+ User's Manual

Chapter 5: Advanced Serverboard Setup
5-1 Handling the Serverboard .............................................................................. 5-1
5-2 Processor and Heatsink Installation ............................................................... 5-2
5-3 Connecting Cables ......................................................................................... 5-5
Connecting Data Cables .......................................................................... 5-5
Connecting Power Cables ....................................................................... 5-5
Connecting the Control Panel .................................................................. 5-6
5-4 I/O Ports ......................................................................................................... 5-7
5-5 Installing Memory ........................................................................................... 5-7
5-6 Adding PCI Cards ......................................................................................... 5-10
5-7 Serverboard Details ...................................................................................... 5-11
H8DME-2/H8DM8-2 Layout ................................................................... 5-11
H8DME-2/H8DM8-2 Quick Reference ................................................... 5-12
5-8 Connector Definitions ................................................................................... 5-13
ATX Power Connector ............................................................................ 5-13
Processor Power Connector .................................................................. 5-13
Auxiliary Power Connector ..................................................................... 5-13
Power LED ............................................................................................. 5-13
HDD LED ............................................................................................... 5-14
NIC1 LED ............................................................................................... 5-14
NIC2 LED ............................................................................................... 5-14
Overheat/Fan Fail LED .......................................................................... 5-14
Power Fail LED ...................................................................................... 5-14
Reset Button .......................................................................................... 5-15
Power Button .......................................................................................... 5-15
USB0/1 (Universal Serial Bus Ports) ..................................................... 5-15
USB2/3 Headers .................................................................................... 5-15
ATX PS/2 Keyboard and Mouse Ports .................................................. 5-16
Serial Ports ............................................................................................. 5-16
Fan Headers .......................................................................................... 5-16
JLAN1/2 (Ethernet Ports) ....................................................................... 5-16
Power LED/Speaker ............................................................................... 5-17
Overheat LED ........................................................................................ 5-17
Chassis Intrusion .................................................................................... 5-17
Wake-On-LAN ........................................................................................ 5-17
Wake-On-Ring ........................................................................................ 5-17
Power Supply I2C Header ...................................................................... 5-18
SMBus Header ....................................................................................... 5-18
3rd Power Supply Alarm Header ........................................................... 5-18
vii
Table of Contents

viii
Power Fail Alarm Reset Header ............................................................ 5-19
Compact Flash Power Header ............................................................... 5-19
SGPIO .................................................................................................... 5-19
5-9 Jumper Settings ............................................................................................ 5-20
Explanation of Jumpers ......................................................................... 5-20
CMOS Clear ........................................................................................... 5-20
3rd Power Supply Fail Detect Enable/Disable ....................................... 5-21
I2C to PCI Enable/Disable ...................................................................... 5-21
Watch Dog Enable/Disable .................................................................... 5-21
Onboard Speaker Enable/Disable .......................................................... 5-22
PCI-X Slot Speed ................................................................................... 5-22
SCSI Controller Enable/Disable ............................................................. 5-22
SCSI Termination Enable/Disable .......................................................... 5-23
VGA Enable/Disable ............................................................................... 5-23
Compact Flash Master/Slave ................................................................. 5-23
5-10 Onboard Indicators ....................................................................................... 5-24
JLAN1/JLAN2 LEDs ............................................................................... 5-24
+3.3V Standby LED ............................................................................... 5-24
SCSI Activity LEDs ................................................................................. 5-24
5-11 Floppy, IDE, SCSI and SATA Drive Connections ......................................... 5-25
Floppy Connector ................................................................................... 5-25
IDE Connector ........................................................................................ 5-26
SATA Ports ............................................................................................. 5-26
SCSI Connectors ................................................................................... 5-27
5-12 Enabling SATA RAID .................................................................................... 5-28
5-13 Installing Additional Drivers .......................................................................... 5-30
Chapter 6: Advanced Chassis Setup
6-1 Static-Sensitive Devices ................................................................................. 6-1
6-2 Control Panel .................................................................................................. 6-2
6-3 System Fans ................................................................................................... 6-2
System Fan Failure .................................................................................. 6-3
Replacing System Fans ........................................................................... 6-3
6-4 Drive Bay Installation/Removal ....................................................................... 6-4
Accessing the Drive Bays ........................................................................ 6-4
SATA/SCSI Drive Installation ................................................................... 6-5
DVD-ROM and Floppy Drive Installation ................................................. 6-7
6-5 Power Supply ................................................................................................. 6-8
Power Supply Failure ............................................................................... 6-8
AS2021M-T2R+/2021M-82R+ User's Manual

Table of Contents
ix
Replacing the Power Supply .................................................................... 6-6
Chapter 7: BIOS
7-1 Introduction ..................................................................................................... 7-1
7-2 Main Menu ...................................................................................................... 7-2
7-3 Advanced Settings Menu ............................................................................... 7-2
7-4 Boot Menu .................................................................................................... 7-16
7-5 Security Menu ............................................................................................... 7-17
7-6 Exit Menu ...................................................................................................... 7-18
Appendices:
Appendix A: BIOS Error Beep Codes ...................................................................... A-1
Appendix B: BIOS POST Checkpoint Codes ........................................................... B-1
Appendix C: System Specifications ........................................................................ C-1

Notes
x
AS2021M-T2R+/2021M-82R+ User's Manual

Chapter 1
Introduction
1-1 Overview
The AS2021M-T2R+/2021M-82R+ is a high-end server that is comprised of two
main subsystems: the SC825TQ-R700LP/SC825S2-R700LP 2U server chassis and
the H8DME-2/H8DM8-2 dual AMD processor serverboard. Please refer to our web
site for information on operating systems that have been certified for use with the
2021M-T2R+/2021M-82R+ (www.supermicro.com).
In addition to the serverboard and chassis, various hardware components have
been included with the 2021M-T2R+/2021M-82R+, as listed below:
 Three (3) 8-cm hot-swap chassis fans (FAN-0094L)
 One (1) air shroud (MCP-310-00025-00)
 Two (2) CPU passive heatsinks (SNK-P0023P)
One (1) DVD-ROM drive (DVM-PNSC-824)
One (1) floppy disk drive, optional (FPD-TEAC-SB)
 One (1) cable for DVD drive (CBL-0139L)
 One (1) floppy cable (CBL-040L)
 One (1) front control panel cable (CBL-0087)
 One (1) rail set (MCP-290-00002-00)
 SATA Accessories (2021M-T2R+ only)
One (1) SATA backplane (BPN-SAS-825TQ)
One (1) 2-ft SATA cable (CBL-0044L)
Two (2) 35-cm SATA cables (CBL-0061L)
Two (2) SGPIO ribbon cables (CBL-0157L)
Two (2) 48-cm SATA cables (CBL-0178L)
One (1) 70-cm SATA cable (CBL-0179L)
Eight (8) SATA hot-swap drive carriers [MCP-220-00001-03(01)]*
(The chassis has eight carriers but only six SATA drives are supported.)
Chapter 1: Introduction
1-1

1-2
AS2021M-T2R+/2021M-82R+ User's Manual
1-2 Serverboard Features
At the heart of the 2021M-T2R+/2021M-82R+ lies the H8DME-2/H8DM8-2, a dual
processor serverboard based on the nVidia MCP55 Pro chipset and designed to
provide maximum performance. Below are the main features of the H8DME-2/
H8DM8-2. (See Figure 1-1 for a block diagram of the MCP55 Pro chipset).
Processors
The H8DME-2/H8DM8-2 supports single or dualAMD Opteron 2000 Series, Socket
F type processors. Please refer to the serverboard description pages on our web
site for a complete listing of supported processors (www.supermicro.com/aplus).
Memory
The H8DME-2/H8DM8-2 has sixteen 240-pin DIMM slots that can support up to
32/32/64 GB of registered ECC DDR2-667/533/400 SDRAM. The memory operates
in an interleaved configuration and requires requires modules of the same size and
speed to be installed two at a time. See Chapter 5 Section 5 for details.
Serial ATA
A SATA controller is integrated into the chipset to provide a six-port Serial ATA
subsystem, which is RAID 0, 1, 0+1, 5 and JBOD supported. The Serial ATA drives
are hot-swappable units.
Note: The operating system you use must have RAID support to enable the hot-
swap capability and RAID function of the Serial ATA drives.
 SCSI Accessories 2021M-82R+ only)
One (1) dual-channel SCSI backplane (BPN-SCA-825S2)
One (1) Ultra320 SCSI 6-in ribbon cable (CBL-037L-U320)
One (1) Ultra320 SCSI 9-in round cable (CBL-0043L)
Eight (8) SCSI hot-swap drive carriers [MCP-220-00001-03(01)]*
 One (1) CD containing drivers and utilities
*The 2021M-T2R+/2021M-82R+ is available in silver and black; a "V" following a
part number indicates silver and "B" indicates black.

1-3
Chapter 1: Introduction
Onboard SCSI (2021M-82R+ only)
An onboardAdaptec AIC-7902W dual-channel SCSI controller in integrated into the
H8DM8-2, which supports eight 80-pin SCA Ultra320 SCSI hard drives. The SCSI
drives are connected to an SCA backplane that provides power, bus termination
and configuration settings. The SCSI drives are hot-swappable units.
Note: The operating system you use must have RAID support to enable the hot-
swap capability and RAID function of the SCSI drives.
PCI Expansion Slots
The H8DME-2/H8DM8-2 has six PCI expansion slots, which includes two PCI-Ex-
press x8 slots, two 64-bit 133 MHz PCI-X slots and two 64-bit 100 MHz PCI-X slots.
(On the H8DM8-2, one 100 MHz PCI-X slot supports Zero Channel RAID.)
Onboard Controllers/Ports
One floppy drive controller and one onboard ATA/133 controllers are provided to
support up to two IDE hard drives or ATAPI devices. The color-coded I/O ports
include one COM port (an additional COM header is located on the serverboard),
a VGA (monitor) port, two USB 2.0 ports, PS/2 mouse and keyboard ports and two
gigabit Ethernet ports.
ATI Graphics Controller
The H8DME-2/H8DM8-2 features an integrated ATI video controller based on the
ES1000 graphics chip. The ES1000 was designed specifically for servers, featuring
low power consumption, high reliability and superior longevity.
Other Features
Other onboard features that promote system health include onboard voltage moni-
tors, a chassis intrusion header, auto-switching voltage regulators, chassis and CPU
overheat sensors, virus protection and BIOS rescue.

1-4
AS2021M-T2R+/2021M-82R+ User's Manual
1-3 Server Chassis Features
The following is a general outline of the main features of the SC825TQ-R700LP/
SC825S2-R700LP server chassis.
System Power
The SC825TQ-R700LP/SC825S2-R700LP features a redundant 700W power sup-
ply composed of two separate power modules. This power redundancy feature
allows you to replace a failed power supply without shutting down the system.
Serial ATA Subsystem (2021M-T2R+ only)
The SC825TQ-R700LP supports up to six 3 Gb/s Serial ATA drives. The Serial
ATA drives are hot-swappable units and are connected to a backplane that provides
power and control.
Note: The operating system you use must have RAID support to enable the hot-
swap capability of the Serial ATA drives.
SCSI Subsystem (2021M-82R+ only)
The SC825S2-R700LP chassis was designed to support eight dual-channel SCSI
hard drives, which are hot-swappable units.
Note: The operating system you use must have RAID support to enable the hot-
swap capability of the SCSI drives.
Front Control Panel
The control panel on the 2021M-T2R+/2021M-82R+ provides you with system
monitoring and control. LEDs indicate system power, HDD activity, network activ-
ity, system overheat and power supply failure. A main power button and a system
reset button are also included. In addition, two USB ports and a COM port have
been provided for front side access.
I/O Backplane
The SC825TQ-R700LP/SC825S2-R700LP is an ATX form factor chassis designed
to be used in a 2U rackmount configuration. The I/O backplane provides seven
low-profile PCI expansion slots, one COM port, a VGA port, two USB 2.0 ports,
PS/2 mouse and keyboard ports and two Gb Ethernet ports.

1-5
Chapter 1: Introduction
Figure 1-1. Intel nVidia MCP55 Pro Chipset:
System Block Diagram
Note: This is a general block diagram. Please see Chapter 5 for details.
Note: The AIC-7902 SCSI controller is only on the H8DM8-2 serverboard.
Cooling System
The SC825TQ-R700LP/SC825S2-R700LP chassis has an innovative cooling de-
sign that includes three 8-cm hot-plug system cooling fans located in the middle
section of the chassis. An air shroud channels the airflow from the system fans to
efficiently cool the processor area of the system. The power supply module also
includes a cooling fan.
DIMM 2A
DIMM 2B
DIMM 4A
DIMM4B
DIMM 2A
DIMM2B
DIMM 4A
DIMM4B
nVidia
MCP55Pro
AMD Socket F
CPU2
16 x16 HT link (1 GHz) 128-bit data+ 16-bit ECCDDR2-667/533/400 DDR2-667/533/400
SATA Ports (6)
IDE (ATA133)
USB Ports (6)
S I/O BIOS
Floppy Kybd/
Mouse Serial Ports (2)
AMD Socket F
CPU1
128-bit data+ 16-bit ECC
NEC
uPD720400
SCSI Ports (2)
LPC
DIMM 3A
IPMI
ATI ES1000
AIC-
7902
Slot 6: PCI-E x8
16 x16 HT link (1 GHz)
Slot 1: PCI-X 100/66 MHz
PCI-X Ch A
DIMM 1A
DIMM3A
DIMM 1B
DIMM3B DIMM 3B
DIMM1A
DIMM 1B
Slot 5: PCI-E x8
PCI-Exp x8 Bus
PCI Bus
Slot 2: PCI-X 100/66MHz (ZCR)
Slot 3: PCI-X 133/100 MHz
Slot 4: PCI-X 133/100 MHz
PCI-X Ch B
GLAN Ports (2)

1-6
AS2021M-T2R+/2021M-82R+ User's Manual
1-4 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.
4F, No. 232-1, Liancheng Rd.
Chung-Ho 235, Taipei County
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Web Site: www.supermicro.com.tw
Technical Support:
Email: [email protected]
Tel: [phone], ext.132 or 139

Chapter 2: Server Installation
2-1
Chapter 2
Server Installation
2-1 Overview
This chapter provides a quick setup checklist to get your 2021M-T2R+/2021M-82R+
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 2021M-T2R+/2021M-82R+ 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 server. 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. Read the Rack and Server Precautions in
the next section.
2-3 Preparing for Setup
The box the 2021M-T2R+/2021M-82R+ 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
AS2021M-T2R+/2021M-82R+ 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).
- Leave 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).
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 simul-
taneously 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.
- 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/SCSI drives and power supply units to cool before touch-
ing them.
- Always keep the rack's front door and all panels and components on the servers
closed when not servicing to maintain proper cooling.
!
!
Warnings and Precautions!

Chapter 2: Server Installation
2-3
Rack Mounting Considerations
Ambient Operating Temperature
If installed in a closed or multi-unit rack assembly, the ambient operating tempera-
ture 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 tempera-
ture (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.
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 connec-
tions other than the direct connections to the branch circuit (i.e. the use of power
strips, etc.).

2-4
AS2021M-T2R+/2021M-82R+ User's Manual
2-4 Installing the System into a Rack
This section provides information on installing the 2021M-T2R+/2021M-82R+
into a rack unit. If the 2021M-T2R+/2021M-82R+ has already been mounted into
a rack, you can skip ahead to Sections 2-5 and 2-6. There are a variety of rack
units on the market, which may mean the assembly procedure will differ slightly.
The following is a guideline for installing the system into a rack with the rack rails
provided. You should also refer to the installation instructions that came with the
rack unit you are using.
Identifying the Sections of the Rack Rails
You should have received a total of six rack rail sections with the 2021M-T2R+/
2021M-82R+. Two of these sections secure directly to the 2021M-T2R+/2021M-
82R+ and the third (which actually consists of two joined sections) secures directly
to the rack itself. All screws and hardware mentioned in the installation steps should
be included in the hardware kit.
Refer to Figure 2-1 to determine which rail section gets attached to the front of the
chassis and which gets attached to the rear of the chassis. (The longer of the two
is the front section. The third rail section attaches to the rack.)
Installing the Chassis Rails
Position the front and rear chassis rail sections along the side of the 2021M-
T2R+/2021M-82R+ making sure the screw holes line up. Note that these two rails
are left/right specific. Screw the front chassis rail (the long piece) securely to the
side of the chassis (see Figure 2-1, step 1). There should be two screws for each
side. Repeat this procedure for the other rail on the opposite side of the chassis.
Then attach the two rear chassis rails to the chassis in the same manner, again
keeping in mind that the rails are left/right specific. (You will also need to attach
the rail brackets when installng into a telco rack.)
Locking Tabs: Both front chassis rails and the rack rails have a locking tab, which
serves two functions. The first is to lock the server into place when installed and
pushed fully into the rack, which is its normal position. Secondly, these tabs also
lock the server in place when fully extended from the rack. This prevents the server
from coming completely out of the rack when you pull it out for servicing.