Supero 2027R-AR24 User manual

®
SUPER STORAGE SYSTEM
2027R-AR24
SUPER
USER’S MANUAL
1.0

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 docu-
mentation, 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 WILL SUPERMICRO 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 DATA STORED OR USED WITH THE 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 environ-
ment. 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 warn-
ing 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 repro-
ductive harm.
Manual Revision 1.0
Release Date: January 25, 2013
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 © 2013 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 2027R-AR24. Installation and
maintainance should be performed by experienced technicians only.
The 2027R-AR24 is a high-end storage system based on the SC216A-R920LPB 2U
rackmount chassis and the X9DRH-7TF 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 X9DRH-7TF serverboard and
the SC216A-R920LPB chassis.
Chapter 2: Server Installation
This chapter describes the steps necessary to install the 2027R-AR24 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
2027R-AR24.

iv
Chapter 5: Advanced Serverboard Setup
Chapter 5 provides detailed information on the X9DRH-7TF serverboard, includ-
ing the locations and functions of connections, headers and jumpers. Refer to this
chapter when adding or removing processors or main memory and when reconfig-
uring the serverboard.
Chapter 6: Advanced Chassis Setup
Refer to Chapter 6 for detailed information on the SC216A-R920LPB 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 informa-
tion on running the CMOS Setup Utility.
Appendix A: BIOS Error Beep Codes
Appendix B: System Specifications
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual

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 ................................................................................................................ 1-2
SATA .............................................................................................................. 1-2
PCI Expansion Slots ....................................................................................... 1-2
I/O Ports.......................................................................................................... 1-2
Graphics Controller ......................................................................................... 1-3
1-3 Server Chassis Features ................................................................................ 1-3
System Power ................................................................................................. 1-3
Hard Drives ..................................................................................................... 1-3
Front Control Panel......................................................................................... 1-3
Cooling System ............................................................................................... 1-3
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
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..................................................................................... 2-3
Reliable Ground ......................................................................................... 2-3
2-5 Rack Mounting Instructions............................................................................. 2-4
Identifying the Sections of the Rack Rails...................................................... 2-4
Locking Tabs ................................................................................................... 2-5
Releasing the Inner Rail ................................................................................. 2-5
Installing The Inner Rails on the Chassis....................................................... 2-6
Installing the Outer Rails on the Rack............................................................ 2-7
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual

vii
Standard Chassis Installation ......................................................................... 2-8
Optional Quick Installation Method ................................................................. 2-9
Chapter 3 System Interface
3-1 Overview ......................................................................................................... 3-1
3-2 Control Panel Buttons ..................................................................................... 3-1
3-3 Control Panel LEDs ........................................................................................ 3-1
3-4 Drive Carrier LEDs.......................................................................................... 3-3
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
Hot Swap Fan Warning................................................................................. 4-16
Power Cable and AC Adapter ...................................................................... 4-18
Chapter 5 Advanced Serverboard Setup
5-1 Handling the Serverboard ............................................................................... 5-1
Precautions ..................................................................................................... 5-1
Unpacking ....................................................................................................... 5-2
5-2 Connecting Cables.......................................................................................... 5-2
Connecting Data Cables ................................................................................. 5-2
Connecting Power Cables .............................................................................. 5-2
Connecting the Control Panel......................................................................... 5-2
5-3 I/O Ports.......................................................................................................... 5-3
5-4 Installing the Processor and Heatsink ............................................................ 5-4
Installing an LGA2011 Processor.................................................................... 5-4
Installing a CPU Heatsink ............................................................................... 5-7
Removing the Heatsink................................................................................... 5-7
5-5 Installing Memory ............................................................................................ 5-8
Memory Support.............................................................................................. 5-8
DIMM Installation ............................................................................................ 5-8
Table of Contents

viii
5-6 Adding PCI Add-On Cards............................................................................ 5-13
5-7 Serverboard Details ...................................................................................... 5-14
X9DRH-7TF Quick Reference....................................................................... 5-15
5-8 Connector Definitions ................................................................................... 5-17
5-9 Jumper Settings ............................................................................................ 5-23
5-10 Onboard Indicators........................................................................................ 5-25
5-11 SAS and SATA Ports..................................................................................... 5-26
5-12 Installing Software......................................................................................... 5-27
SuperDoctor III.............................................................................................. 5-28
5-13 Onboard Battery............................................................................................ 5-30
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 Removing the Chassis Cover ......................................................................... 6-3
5-9 System Fans ................................................................................................... 6-4
6-4 System Cooling ............................................................................................... 6-4
System Fans ................................................................................................... 6-4
System Fan Failure......................................................................................... 6-4
Replacing System Fans .................................................................................. 6-4
Air Shrouds ..................................................................................................... 6-5
Installing the Air Shrouds in the Chassis........................................................ 6-5
6-5 Drive Bay Installation/Removal ....................................................................... 6-7
Accessing the Drive Bays ............................................................................... 6-7
6-5 Power Supply ................................................................................................ 6-10
Chapter 7 BIOS
7-1 Introduction...................................................................................................... 7-1
7-2 Main Setup...................................................................................................... 7-2
7-3 Advanced Setup Configurations...................................................................... 7-3
7-4 Event Logs .................................................................................................... 7-24
7-5 IPMI............................................................................................................... 7-25
7-6 Boot............................................................................................................... 7-27
7-7 Security ......................................................................................................... 7-28
7-8 Save & Exit ................................................................................................... 7-29
Appendix A BIOS Error Beep Codes
Appendix B System Specifications
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual

Chapter 1
Introduction
1-1 Overview
The 2027R-AR24 is a high-end storage system comprised of two main subsystems:
the SC216A-R920LPB 2U chassis and the X9DRH-7TF 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 2027R-AR24, as listed below:
• Two CPU heatsinks [SNK-P0048PS (passive) and SNK-P0048AP4 (active)]
• Three 8-cm system fans (FAN-0126L4)
• One air shroud (MCP-310-29001-0N)
• SAS/SATA Accessories
One SAS/SATA backplane (BPN-SAS-216A)
Twenty-four drive carriers (MCP-220-00047-0B)
• One rackmount kit (MCP-290-00053-0N)
Notes: a complete list of safety warnings is provided on the Supermicro web site
at http://www.supermicro.com/about/policies/safety_information.cfm
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.
• SMCI product manuals: http://www.supermicro.com/support/manuals/
• Product drivers and utilities: ftp://ftp.supermicro.com
If you have any questions, please contact our support team at support@
supermicro.com
Chapter 1: Introduction
1-1

1-2
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual
1-2 Serverboard Features
The 2027R-AR24 is built around the X9DRH-7TF, a dual processor serverboard
based on the Intel C602 chipset and designed to provide maximum performance.
Below are the main features of the X9DRH-7TF. (See Figure 1-1 for a block diagram
of the chipset).
Processors
The X9DRH-7TF supports single or dual Intel® E5-2600 Series (Socket R) proces-
sors in LGA 2011 sockets. Please refer to our web site for a complete listing of
supported processors (www.supermicro.com).
Memory
The X9DRH-7TF has sixteen DIMM slots that can support up to 512 GB of ECC
registered/unbuffered DDR3-1600/1066/800 memory. Please refer to Chapter 5 for
details on installing memory.
SAS
Three LSI 2208 hardware RAID controllers provide direct connections to the 24x
SAS 2.0 drive bays. Each controller is RAID 0, 1, 5, 6, 10, 50 and 60 capable.
SATA
A SATA controller is integrated into the C602 chipset to provide a six-port SATA
subsystem, which is RAID 0, 1, 10 and 5 capable. Two ports support SATA 3.0 (I-
SATA0/1) and four support SATA 2.0 (I-SATA2-5).
PCI Expansion Slots
The X9DRH-7TF has six PCI-E 3.0 x8 (in x16 slots), two PCI-E 3.0 x8 and one
PCI-E 3.0 x16 slots. Note that the PCI slots are controlled by the CPU so some slots
may not be available if both CPU sockets are not populated. See the serverboard
layout in Chapter 5 for details.
I/O Ports
The color-coded I/O ports include one COM port, a VGA (monitor) port, four USB,
two 10 GB Ethernet LAN ports and a dedicated IPMI LAN port.

1-3
Chapter 1: Introduction
Graphics Controller
The X9DRH-7TF features an integrated Matrox G200eW video controller. The
G200eW is a 2D/3D/video accelerator chip with a 128-bit core.
1-3 Server Chassis Features
The following is a general outline of the main features of the SC216A-R920LPB
server chassis.
System Power
The SC216A-R920LPB features a redundant (two separate power modules) 920W
high-efficiency power supply with I2C. This power redundancy feature allows you to
replace a failed power supply without shutting down the system.
Hard Drives
The SC216A-R920LPB chassis was designed to support 24 dual-channel SATA
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 SATA drives.
Front Control Panel
The control panel on the SC216A-R920LPB provides you with system monitoring
and control. LEDs indicate system power, HDD activity, network activity, system
overheat/fan fail and power supply failure. A main power button and a system reset
button are also included.
Cooling System
The chassis includes three 8-cm hot-plug system fans located in the middle sec-
tion of the chassis. An air shroud channels the airflow from the system fans to ef-
ficiently cool the processors and memory. Each power supply module also includes
a cooling fan.

1-4
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual
Figure 1-1. Chipset Block Diagram
Note: This is a general block diagram. Please see Chapter 5 for details.
KB
MS
#G-1
#G-2
PORTs#4~7
PORTs#0~3
800/1066/1333/1600
DDRIII
P0
#F-2
#F-1
#E-2
#E-1
DDRIII
#B-2
#B-1
#A-2
#A-1
QPI
8G
LANE6
PCI-E X8
USB 2.0
E5-2600
PCH
C602
SSB
PCI-E X8 G3
DMI2
PCI
LANE1/2/3/4
SPI SIO
W83527
DMI2
USB I-SATA 0/1
2 Rear
4 Front
1 Type-A
BMC
WPCM450
PCI-E X8
PCI-E X8 G3
PCI
#C-1
#C-2
PCI-E X8 G3
SAS2
8 SNB CORE
DDR-III
E5-2600
8 SNB CORE
DDR-III
QPI
8G
4GB/s
SAS
SAS
P1
P1
P0
SLOT 3
SLOT 1 SLOT 2
SLOT 5
SLOT 6
SLOT 7
SLOT 4
PCI-E X8
PCI-E X8
PCI-E X8 G3
PCI-E X8 G3
PCI-E X8 G3
DMI2#2A #1 #2A #2B #3#1 #3A #3C #2C DMI2
SAS2208
I350/X540
LAN
VGA
PCI-E X8
COM1
External COM2 Internal
Optional
PCI-E X16
PCI-E X8
PCI-E X8
PCI-E X8 G3
PCI-E X16 G3
SCU0
SATA
#0~#3
#0~#1
#0~#6
800/1066/1333/1600
(CPU1) (CPU2)
#D1
#D-2 #H-2
#H-1
SATA3.0
3.0 Gb/S
Group2: SATA2.0
from SCU
S-SATA0~3
SATA2.0
Group3:
SATA2.0
3.0 Gb/S
SATA2.0
I-SATA 2~5
Group1:
SATA 3.0
6.0 Gb/S
#2~#5

1-5
Chapter 1: Introduction
Figure 1-2. X9DRH-7TF Serverboard
JS3
SAS4-7
JPWR1 JPWR2
JTPM1
T-SGPIO1
T-SGPIO2
FANB
FANA
FAN4
FAN3
FAN1
FAN6
JF1
JOH1
JPS4
JWD1
JBR1
J
PME1
JPS1
JPB1
J30
J29
JPG1
JPLAN1
JWP1
JBT1
BT1
JITP0
J21
JD1
JIPMB1
SP1
LE1
LEDS1
DM1
VGA
JSD1
LAN1
JSTBY1
S-SATA2
S-SATA3 S-SATA1 I-SATA1
I-SATA0
S-SATA0
P2 DIMM3A
P2 DIMM3B P2 DIMM4A
P2 DIMM4B P1 DIMMA1
P1 DIMMA2
P1 DIMMB1
P1 DIMMB2
P1 DIMMD2
P1 DIMMD1
P1 DIMMC2
P1 DIMMC1
USB6 USB4/5
CPU1 SLOT1 PCI-E 3.0 x8
CPU2 SLOT4 PCI-E 3.0 x16
CPU2 SLOT6 PCI-E 3.0 x8
P2 DIMME1
P2 DIMME2
P2 DIMMF1
P2 DIMMF2
USB2/3
CPU2 SLOT7 PCI-E 3.0 x8
COM2
IPMI_LAN
FAN2
LAN2
COM1
USB0/1
P2-DIMMH2
P2-DIMMH1
P2-DIMMG2
P2-DIMMG1
Battery
JPIC21
BIOS
BMC CTRL LAN CTRL
Intel IO Hub
LSI SAS
CTRL
SAS0-3
J22
X9DRH-7F/iF
Rev. 1.01
CLOSE 1st
OPEN 1st
CLOSE 1st
OPEN 1st
CPU2
CPU1
CPU1 SLOT3 PCI-E 3.0 x8
KB/MS
FAN5
CPU2 SLOT5 PCI-E 3.0 x8
CPU1 SLOT2 PCI-E 3.0 x8
JI2C1
JI2C2
I-SATA4
I-SATA5
I-SATA2
I-SATA3
T-SGPIO-S
JL1 JPME2
JPS2
JPS3
FP CTRL

1-6
SUPERSTORAGESYSTEM 2027R-AR24 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 Dist., New Taipei City 235
Taiwan
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 2027R-AR24
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 2027R-AR24 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 2027R-
AR24. 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 2027R-AR24 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 en-
tirety 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.
• This product is for installation only in a Restricted Access Location (dedicated
equipment rooms, service closets and the like).

2-2
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual
• 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
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 any hot plug 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 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
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual
2-5 Rack Mounting Instructions
This section provides information on installing the chassis into a rack unit with the
rails provided. There are a variety of rack units on the market, which may mean
that the assembly procedure will differ slightly from the instructions provided. 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 26.5" and 36.4" deep.
Identifying the Sections of the Rack Rails
The chassis package includes two rail assemblies in the rack mounting kit. Each
assembly consists of three sections: An inner chassis rail which secures directly to
the chassis, an outer rail that secures to the rack, and a middle rail which extends
from the outer rail. These assemblies are specifically designed for the left and right
side of the chassis.
Figure 2-1. Identifying the Outer Rail, Middle Rail and Inner Rails
(Left Rail Assembly Shown)
Inner Rail
Rail Assembly
(Shown with Rails
Retracted)
This Side Faces
Outward
Locking Tab
Middle Rail
Outer Rail

Chapter 2: Server Installation
2-5
Figure 2-2. Extending and Releasing the Inner Rail
1
2
1
1
1
3
1
4
Locking Tabs
Each inner rail has a locking tab. This tab locks the chassis into place when installed
and pushed fully into the rack. These tabs also lock the chassis in place when fully
extended from the rack. This prevents the server from coming completely out of
the rack when when the chassis is pulled out for servicing.
Releasing the Inner Rail
Releasing Inner Rail from the Outer Rails
1. Identify the left and right outer rail assemblies as described on page 6-4.
2. Pull the inner rail out of the outer rail until it is fully extended as illustrated
below.
3. Press the locking tab down to release the inner rail.
4. Repeat steps 1-3 for the second outer rail.

2-6
SUPERSTORAGESYSTEM 2027R-AR24 User's Manual
Figure 2-4. Inner Rails Installed on the Chassis
(The chassis above are an example only. Actual chassis may differ slightly)
Figure 2-3. Installing the Inner Rails
Installing The Inner Rails on the Chassis
Installing the Inner Rails
1. Confirm that the left and right inner rails have been correctly identified.
2. Place the inner rail firmly against the side of the chassis, aligning the hooks
on the side of the chassis with the holes in the inner rail.
3. Slide the inner rail forward toward the front of the chassis until the rail clicks
into the locked position, which secures the inner rail to the chassis.
4. Secure the inner rail to the chassis with the screws provided.
5. Repeat steps 1 through 4 above for the other inner rail.
1
3
1
4
1
4
1
2
Inner Rails