Supermicro SuperServer AS-2021A-T2R+F User manual

®
SUPER
USER’S MANUAL
1.0b
SuperServer AS-2021A-T2R+F
SuperServer AS-2021A-32R+F

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
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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 1.0b
Release Date: April 20, 2010
Unless you request and receive written permission from SUPER MICRO COMPUTER, 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
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Copyright © 2010 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 AS-2021A-
T2R+F/AS-2021A-32R+F. Installation and maintainance should be performed by
experienced technicians only.
The SuperServer AS-2021A-T2R+F/32R+F is a high-end server based on the
SC825TQ-R720LPB 2U rackmount chassis and the H8DIi+-F (AS-2021A-T2R+F
server) or H8DI3+-F (AS-2021A-32R+F server) 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 H8DIi+-F/H8DI3+-F
serverboard and the SC825TQ-R720LPB chassis.
Chapter 2: Server Installation
This chapter describes the steps necessary to install the SuperServer AS-
2021A-T2R+F/32R+F 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: 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
SuperServer AS-2021A-T2R+F/32R+F.
Chapter 5: Advanced Serverboard Setup
Chapter 5 provides detailed information on the H8DIi+-F/H8DI3+-F 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 AS-2021A-T2R+F/32R+F User's Manual
iv
Chapter 6: Advanced Chassis Setup
Refer to Chapter 6 for detailed information on the SC825TQ-R720LPB 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.
Appendix A: BIOS Error Beep Codes
Appendix B: Installing Windows
Appendix C: 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
HyperTransport Technology............................................................................ 1-2
Memory ...........................................................................................................1-2
Serial ATA........................................................................................................1-2
SAS (AS-2021A-32R+F Only).........................................................................1-3
PCI Expansion Slots....................................................................................... 1-3
Onboard Controllers/Ports .............................................................................. 1-3
Graphics Controller......................................................................................... 1-3
Other Features................................................................................................1-3
1-3 Server Chassis Features ................................................................................ 1-4
System Power.................................................................................................1-4
Serial ATA/SAS Subsystem............................................................................. 1-4
Front Control Panel......................................................................................... 1-4
I/O Backplane.................................................................................................. 1-4
Cooling System...............................................................................................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
Choosing a Setup Location............................................................................. 2-1
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..................................................................................... 2-3
Reliable Ground ......................................................................................... 2-3
2-4 Installing the System into a Rack ...................................................................2-4
Separating the Sections of the Rack Rails.....................................................2-4
Installing the Inner Rail Extension..................................................................2-4
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual

vii
Outer Rack Rails............................................................................................. 2-6
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 SAS/SATA Drive Carrier LEDs........................................................................3-3
Notes
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
Chapter 5 Advanced Serverboard Setup
5-1 Handling the Serverboard...............................................................................5-1
Precautions .....................................................................................................5-1
Unpacking .......................................................................................................5-2
5-2 Serverboard Installation.................................................................................. 5-2
5-3 Connecting Cables.......................................................................................... 5-3
Connecting Data Cables.................................................................................5-3
Connecting Power Cables .............................................................................. 5-3
Connecting the Control Panel......................................................................... 5-3
5-4 I/O Ports.......................................................................................................... 5-4
5-5 Installing the Processor and Heatsink ............................................................5-5
Installing an Opteron 2000 Processor ............................................................5-5
Installing a Passive Heatsink..........................................................................5-7
Removing the Heatsink................................................................................... 5-8
Removing a Passive Heatsink ...................................................................5-8
5-6 Installing Memory............................................................................................ 5-8
Table of Contents

viii
Memory Support..............................................................................................5-8
Memory Support......................................................................................... 5-9
Populating DIMMs...................................................................................... 5-9
5-7 Installing PCI Add-On Cards..........................................................................5-11
5-8 Serverboard Details ...................................................................................... 5-12
5-8 Connector Definitions ...................................................................................5-14
5-9 Jumper Settings............................................................................................ 5-19
Explanation of Jumpers ................................................................................ 5-19
5-10 Onboard Indicators........................................................................................5-22
5-11 Floppy, IDE, SAS and SATA Drive Connections........................................... 5-23
5-12 Enabling SATA RAID..................................................................................... 5-25
Serial ATA (SATA)..........................................................................................5-25
Installing the OS/SATA Driver....................................................................... 5-25
Building a Driver Diskette.........................................................................5-25
Enabling SATA RAID in the BIOS............................................................5-26
Using the Adaptec RAID Utility..................................................................... 5-27
Installing the RAID Driver During OS Installation......................................... 5-27
5-13 Installing Drivers............................................................................................ 5-28
Supero Doctor III........................................................................................... 5-29
5-14 Flashing IT Firmware .................................................................................... 5-31
Chapter 6 Advanced Chassis Setup
6-1 Static-Sensitive Devices..................................................................................6-1
Precautions .....................................................................................................6-1
Unpacking .......................................................................................................6-1
6-2 Control Panel .................................................................................................. 6-2
6-3 System Fans................................................................................................... 6-3
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 Drive Installation....................................................................................6-6
Hard Drive Backplane.....................................................................................6-7
DVD-ROM and Floppy Drive Installation........................................................6-8
6-5 Power Supply.................................................................................................. 6-9
Power Supply Failure......................................................................................6-9
Removing/Replacing the Power Supply.......................................................... 6-9
Chapter 7 BIOS
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual

Table of Contents
ix
7-1 Introduction...................................................................................................... 7-1
Starting BIOS Setup Utility..............................................................................7-1
How To Change the Configuration Data.........................................................7-1
Starting the Setup Utility................................................................................. 7-2
7-2 Main Setup...................................................................................................... 7-2
4-3 Advanced Settings Menu................................................................................7-4
4-4 Security Menu............................................................................................... 7-21
4-5 Boot Menu..................................................................................................... 7-21
4-6 Exit Menu......................................................................................................7-22
Appendix A BIOS Error Beep Codes
A-1 BIOS Error Beep Codes .................................................................................A-1
Appendix B Installing Windows
B-1 Installing Windows to a RAID System............................................................B-1
B-2 Installing Windows to a Non-RAID System ....................................................B-2
Appendix C System Specifications

Notes
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual
x

Chapter 1
Introduction
1-1 Overview
The SuperServer AS-2021A-T2R+F/32R+F is a high-end server comprised of two
main subsystems: the SC825TQ-R720LPB 2U server chassis and the H8DIi+-F/
H8DI3+-F 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 AS-2021A-T2R+F/32R+F, as listed below:
Three 8-cm chassis fans (FAN-0094L4)
•
Two 2U passive heatsinks for AMD CPU Socket F (SNK-P0023P+)•
One air shroud (MCP-310-82510-0B)•
SAS/SATA Accessories:•
One SAS backplane (BPN-SAS-825TQ)
Eight drive carriers (MCP-220-00024-0B)
Two fixed drive trays (MCP-220-82502-0B)
AS-2021A-T2R+F/32R+F server only:
Two 13-cm to 46-cm IPASS to 4 SATA cables (CBL-0176L-01)
AS-2021A-T2R+F server only:
One 61-cm SATA Straight-Straight cable (CBL-0044L)
Two 35-cm SATA cables (CBL-006IL)
Two 40-cm 8-pin to 8-pin ribbon cables with tube for SGPIO (CBL-0157L)
Two 48-cm Flat Straight-Straight SATA cables (CBL-0178L)
One 70-cm Flat Straight-Straight SATA cable (CBL-0179L)
One rail set (MCP-290-00053-0N)
One CD containing drivers, manual and utilities
•
Chapter 1: Introduction
1-1

1-2
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual
Optional:•
Floppy disk drive (FPD-TEAC-SB)
Floppy disk drive kit (MCP-220-82503-0B)
USB/COM port tray (MCP-220-00007-01)
CD-ROM kit (CSE-PT92L)
DVD-ROM driver (DVM-TEAC-824B)
Connecting cable (CBL-0139L)
1-2 Serverboard Features
At the heart of the SuperServer AS-2021A-T2R+F/32R+F lies the H8DIi+-F/
H8DI3+-F, a dual processor serverboard based on the AMD SR5690 + SP5100
chipset and designed to provide maximum performance. Below are the main
features of the H8DIi+-F/H8DI3+-F. (See Figure 1-1 for a block diagram of the
chipset).
Processors
The H8DIi+-F/H8DI3+-F supports dual AMD 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).
HyperTransport Technology
HyperTransport technology is a high-speed, low latency point to point link that was
designed to increase the communication speed by a factor of up to 48x between
integrated circuits. This is done partly by reducing the number of buses in the
chipset to reduce bottlenecks and by enabling a more efficient use of memory
in multi-processor systems. The end result is a significant increase in bandwidth
within the chipset.
Memory
The H8DIi+-F/H8DI3+-F has sixteen DIMM slots that can support up to 128 GB
of DDR2-800/667/533 registered ECC SDRAM. The memory operates in an
interleaved configuration and requires modules of the same size and speed to be
installed two at a time. See Chapter 5 for details.
Serial ATA
A Serial ATA controller is integrated into the SP5100 (South Bridge) portion of the
chipset to provide a six-port 3 Gb/s SATA subsystem, which is RAID 0, 1 and 10
supported. The SATA drives are hot-swappable units.

1-3
Chapter 1: Introduction
Note: The operating system you use must have RAID support to enable the hot-
swap capability and RAID function of the SATA drives.
SAS (AS-2021A-32R+F Only)
An LSI 1068E SAS controller is integrated into the H8DM3-2 to provide an
eightport SAS (Serial Attached SCSI) subsystem, which is RAID 0, 1, 10 and
JBOD supported. (Optional RAID 5 support is available with the iButton installed.)
The SAS drives are hot-swappable units. SR and IT modes are supported but
not IR.
Note: The operating system you use must have RAID support to enable the
hotswap capability and RAID function of the SAS drives.
PCI Expansion Slots
The H8DIi+-F/H8DI3+-F has two PCI Express 2.0 x16 (x8 signal) slots, one PCI-
Express x8 slot, one PCI Express x8 slot (x4 signal) and two 64-bit 133/100 MHz
PCI-X slots.
Onboard Controllers/Ports
A floppy drive connector is included on the serverboard as well as one onboard
ATA/100 connector, which supports 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 (two additional USB headers
and two Type A ports are included on the serverboard), PS/2 mouse and keyboard
ports and two gigabit Ethernet ports. An additional IPMI LAN port is provided as
well for an IPMI connection.
Graphics Controller
The H8DIi+-F/H8DI3+-F features an integrated video controller based on the
Matrox®G200 16 MB graphics chip. The Matrox G200 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
monitors, a chassis intrusion header, auto-switching voltage regulators, chassis and
CPU overheat sensors, virus protection and BIOS rescue.

1-4
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual
1-3 Server Chassis Features
The following is a general outline of the main features of the SC825TQ-R720LPB
server chassis.
System Power
The SC825TQ-R720LPB features a redundant 720W power supply 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/SAS Subsystem
The SC825TQ-R720LPB supports up to eight 3 Gb/s drives. The SATA/SAS 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 SATA/SAS drives.
Front Control Panel
The control panel on the SuperServer AS-2021A-T2R+F/32R+F provides you with
system monitoring and control. LEDs indicate system power, HDD activity, network
activity, system overheat and power supply failure. A main power button and a
system reset button are also included. In addition, two USB ports and one serial
port have been incorporated into the control panel to provide front side USB and
COM port access.
I/O Backplane
The SC825TQ-R720LPB is anATX form factor chassis designed to be used in a 2U
rackmount configuration. The I/O backplane provides seven low-profile expansion
slots, one COM port, a VGA port, two USB 2.0 ports, PS/2 mouse and keyboard
ports, two gigabit Ethernet ports and one dedicated IPMI LAN port.
Cooling System
The SC825TQ-R720LPB chassis has an innovative cooling design 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.

1-5
Chapter 1: Introduction
Figure 1-1. AMD SR5690/SP5100 Chipset:
System Block Diagram
Note: This is a general block diagram. Please see Chapter 5 for details.
CPU1
HT
HT
CPU2
CPU1 DIMM 4A CPU1 DIMM 4B
CPU1 DIMM 3A
CPU1 DIMM 2A
CPU1 DIMM 1A
CPU1 DIMM 3B
CPU1 DIMM 2B
CPU1 DIMM 1B
Memory Link Memory Link Memory Link
SR5690
HT
Memory Link
PCI-E Slot6
PCI-E Slot3
PCI-E Slot4
PCI-E Slot5
PCI-E 2.0 x8
PCI-E 2.0 x8
PCI-E 2.0 x8
PCI-E 2.0 x4
SP5100
A-Link
SAS Controller
LSI 1068E
Dual GbE
Intel 82574
NEC
PD720400
PCI-E 1.0 x8
PCI-E 1.0 x4
PCI-E 1.0 x4
SAS x4
SAS x4
PCI-X 64-bit
133 Mhz Slot 1 PCI-X B
PCI-X A
PCI-X 64-bit
133 Mhz Slot 2
Dual
RJ-45
BMC
VGA
WPCM450-R
IDE
(ATA/133)
SATA x6
SPI Flash
PCI
2xUSB
SMBus
SIO
W83627 DHG
HWM
W83795 G
LPC
FE PHY
RTL8201 N RJ45
2xUSB
COM2 KB/MSCOM1FLOPPY
4xUSB
DDR2 SDRAM
64Mbx16
PSU I2C
IPMB
VGA RMI
128 bit Data + 16 bit ECC
DDR2 800 /667 /533 128 bit Data + 16 bit ECC
DDR2 800 /667 /533
CPU2 DIMM 4A CPU2 DIMM 4B
CPU2 DIMM 3A
CPU2 DIMM 2A
CPU2 DIMM 1A
CPU2 DIMM 3B
CPU2 DIMM 2B
CPU2 DIMM 1B

1-6
SUPERSERVER AS-2021A-T2R+F/32R+F 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 SuperServer AS-2021A-
T2R+F/32R+F 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 AS-2021A-T2R+F/32R+F 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 SuperServer AS-
2021A-T2R+F/32R+F. 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 SuperServer AS-2021A-T2R+F/32R+F 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.
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.

2-2
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual
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.
!
!
Warnings and Precautions!
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 si-
•
multaneously 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 SAS/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.

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
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.
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.).

2-4
SUPERSERVER AS-2021A-T2R+F/32R+F User's Manual
2-4 Installing the System into a Rack
This section provides information on installing the SC825 chassis into a rack unit
with the quick-release rails provided. There are a variety of rack units on the market,
which may mean the assembly procedure will differ slightly. You should also refer to
the installation instructions that came with the rack unit you are using.
Note: This rail will fit a rack between 26" and 33.5" deep.
Separating the Sections of the Rack Rails
The chassis package includes two rail assemblies in the rack mounting kit. Each
assembly consists of two sections: an inner fixed chassis rail that secures directly
to the server chassis and an outer fixed rack rail that secures directly to the rack
itself.
Installing the Inner Rail Extension
The SC825 chassis includes a set of inner rails in two sections: inner rails and inner
rail extensions. The inner rails are pre-attached to the chassis, and do not interfere
with normal use of the chassis if you decide not to use a server rack. The inner rail
extension is attached to the inner rail to mount the chassis in the rack.
Installing the Inner Rails
Place the inner rail extensions on the side of the chassis aligning the hooks1. of the chassis with the rail extension holes. Make sure the extension faces
"outward" just like the pre-attached inner rail.
Slide the extension toward the front of the chassis.2.
Secure the chassis with 2 screws as illustrated. Repeat steps for the other3. inner rail extension.