Dell PowerEdge R815 Quick start guide

PowerEdge R815
Technical Guide
Ideal for
virtualization,
medium-sized
databases, high-
performance
computing, and
other highly
threaded application
implementations.

Dell
PowerEdge R815 Technical Guide 1
This document is for informational purposes only. Dell reserves the right to make changes without
further notice to any products herein. The content provided is as is and without express or implied
warranties of any kind.
Dell, PowerEdge, EqualLogic, PowerVault, OpenManage, and ReadyRails are trademarks of Dell, Inc.
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Revision 1 December 2010

Dell
PowerEdge R815 Technical Guide 2
Table of Contents
1 Product Comparison ...........................................................................................5
1.1 Overview ..................................................................................................5
1.1.1 Performance-Driven Technology .................................................................5
1.1.2 Purpose-Built for Reliability ......................................................................5
1.1.3 Efficient Infrastructure............................................................................6
1.1.4 Intelligent, Connected Systems Management ..................................................6
1.2 Comparison ...............................................................................................6
2 System Overview ...............................................................................................8
3 Mechanical .................................................................................................... 11
3.1 Chassis Description..................................................................................... 11
3.2 Dimensions and Weight................................................................................ 11
3.3 Front Panel View and Features ...................................................................... 12
3.4 Back Panel View and Features ....................................................................... 12
3.5 Power Supply Indicators............................................................................... 13
3.6 NIC Indicators........................................................................................... 13
3.7 Side Views............................................................................................... 13
3.8 Internal Chassis View .................................................................................. 14
3.9 Rails and Cable Management ......................................................................... 14
3.10 Fans ...................................................................................................... 15
3.11 Cabling................................................................................................... 15
3.12 Control Panel/LCD ..................................................................................... 17
3.13 Security.................................................................................................. 17
3.13.1 Cover Latch ....................................................................................... 17
3.13.2 Bezel ............................................................................................... 18
3.13.3 Hard Drive......................................................................................... 18
3.13.4 TPM................................................................................................. 18
3.13.5 Power Off Security ............................................................................... 18
3.13.6 Intrusion Alert .................................................................................... 18
3.13.7 Secure Mode ...................................................................................... 18
3.14 USB Key.................................................................................................. 18
3.15 Battery................................................................................................... 19
3.16 Field Replaceable Units (FRU)........................................................................ 19
3.17 User Accessible Jumpers, Sockets, and Connectors............................................... 19
4 Power, Thermal, Acoustic .................................................................................. 20
4.1 Power Supplies ......................................................................................... 20
4.2 Power Distribution Board ............................................................................. 20
4.3 42BPower Efficiency ....................................................................................... 20
4.4 Power Supply Specifications.......................................................................... 21
4.5 Environmental Specifications......................................................................... 21
4.6 ENERGY STAR®Compliance ........................................................................... 22
4.7 Thermal.................................................................................................. 22
4.8 Acoustics ................................................................................................ 23
5 Processors..................................................................................................... 24
5.1 Overview ................................................................................................ 24
5.2 Features ................................................................................................. 24
5.3 Supported Processors.................................................................................. 25
5.4 Processor Configurations.............................................................................. 25
5.5 Processor Installation.................................................................................. 25
5.6 Additional Processor Information .................................................................... 26

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PowerEdge R815 Technical Guide 3
6 Memory ........................................................................................................ 27
6.1 Overview ................................................................................................ 27
6.2 DIMMs Supported ....................................................................................... 27
6.3 Slots/Risers ............................................................................................. 27
6.4 Speed .................................................................................................... 27
6.5 Sparing................................................................................................... 28
6.6 Mirroring................................................................................................. 28
6.7 RAID ...................................................................................................... 28
6.8 Supported Configurations ............................................................................. 28
7 Chipset ........................................................................................................ 30
7.1 Overview ................................................................................................ 30
7.2 AMD I/O Bridges ........................................................................................ 30
7.3 HyperTransport 3 (HT3) ............................................................................... 30
7.4 PCI Express Expansion ................................................................................. 30
7.5 SouthBridge Link Interface ........................................................................... 31
8 BIOS ............................................................................................................ 32
8.1 Overview ................................................................................................ 32
8.2 Supported ACPI States................................................................................. 32
9 Embedded NICs/ LAN on Motherboard (LOM) ............................................................ 33
9.1 Overview ................................................................................................ 33
10 I/O Slots ....................................................................................................... 34
10.1 Overview ................................................................................................ 34
10.2 PCI Risers................................................................................................ 34
10.3 Boot Order .............................................................................................. 35
10.4 NIC and LOM Enumeration ............................................................................ 35
10.5 PCI Card Dimensions ................................................................................... 35
11 Storage ........................................................................................................ 36
11.1 Overview ................................................................................................ 36
11.2 Storage Controllers .................................................................................... 37
11.2.1 PERC H200......................................................................................... 37
11.2.2 PERC H700......................................................................................... 37
11.2.3 PERC H800......................................................................................... 37
11.3 LED Indicators .......................................................................................... 38
11.4 Optical Drives........................................................................................... 38
11.5 Tape Drives ............................................................................................. 38
12 Video........................................................................................................... 39
12.1 Overview ................................................................................................ 39
13 Rack Information............................................................................................. 40
13.1 Overview ................................................................................................ 40
13.2 Rails ...................................................................................................... 40
13.3 Cable Management Arm (CMA) ....................................................................... 42
13.4 Rack View ............................................................................................... 42
14 Operating Systems and Virtualization..................................................................... 44
15 Systems Management........................................................................................ 45
15.1 Overview ................................................................................................ 45
15.2 Server Management.................................................................................... 45
15.3 Embedded Server Management ...................................................................... 46
15.4 Lifecycle Controller and Unified Server Configurator ............................................ 46
15.5 Integrated Dell Remote Access Controller.......................................................... 47
15.6 iDRAC Express........................................................................................... 47
15.7 iDRAC6 Enterprise...................................................................................... 48
15.8 iDRAC6 Enterprise with Virtual Flash (vFlash) Media ............................................. 48

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PowerEdge R815 Technical Guide 4
16 Peripherals.................................................................................................... 51
16.1 USB peripherals......................................................................................... 51
16.2 External Storage........................................................................................ 51
Tables
Table 1. Comparison of PowerEdge R815, R905, and R810 Servers.......................................6
Table 2. Product Features Summary ..........................................................................8
Table 3. Power Supply Status ................................................................................ 13
Table 4. Power Supply Specifications ....................................................................... 21
Table 5. Environmental Specifications...................................................................... 21
Table 6. Acoustical Performance for 4-Socket Configuration ........................................... 23
Table 7. G34 Processor Features ............................................................................ 24
Table 8. Supported Processors ............................................................................... 25
Table 9. Supported Configurations .......................................................................... 28
Table 10. PCI Risers ............................................................................................. 35
Table 11. Drives ................................................................................................. 36
Table 12. RAID Configurations................................................................................. 36
Table 13. Storage Card Support Matrix....................................................................... 38
Table 14. 2D Graphics Video Modes .......................................................................... 39
Table 15. Supported Racks..................................................................................... 41
Table 16. Rail Adjustability Ranges and Depth ............................................................. 42
Table 17. Unified Server Configurator Features and Description......................................... 47
Table 18. Features List for BMC, iDRAC and vFlash ........................................................ 48
Table 19. Statement of Volatility ............................................................................. 52
Figures
Figure 1. R815 Chassis Dimensions ........................................................................... 11
Figure 2. Front View (without Bezel) ........................................................................ 12
Figure 3. Front View (with Bezel) ............................................................................ 12
Figure 4. Rear View ............................................................................................ 12
Figure 5. Side View ............................................................................................. 13
Figure 6. Internal Chassis View ............................................................................... 14
Figure 7. Cabling Diagram ..................................................................................... 16
Figure 8. LCD Panel ............................................................................................ 17
Figure 9. USB Port .............................................................................................. 19
Figure 10. R815 ReadyRails Sliding Rails with Optional CMA............................................ 40
Figure 11. 2U Threaded Rack Adapter Brackets Kit ...................................................... 41
Figure 12. R815 Mounted in the B2 Sliding Rails.......................................................... 43
Figure 13. R815 CMA Mounted on the Side Opposite the Power Supplies (Recommended)......... 43

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Dell PowerEdge R815 Technical Guide
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1Product Comparison
1.1 Overview
The Dell™ PowerEdge™ R815 is a 4-socket rack server offering the latest AMD Opteron™
processors with up to 48 processor cores and an excellent balance of advanced
manageability, memory scalability, I/O, and redundancy in a space-saving 2U form
factor.
1.1.1 Performance-Driven Technology
Purpose-built to provide a reliable foundation and balanced with the latest AMD
Opteron processor technology optimized for stability, consistency, and outstanding
price for performance, the Dell PowerEdge R815 is designed from the ground up for
value and performance. It is an ideal platform for customers looking to maximize data
center space and budget.
1.1.2 Purpose-Built for Reliability
We have listened to our customers and built servers endowed with reliability,
availability, and quality. Dell‘s reliability promise is simple: Deliver quality products
that stand the test of time.
From the robust, metal hard drive carriers and organized cabling to the interactive
LCD screen, dual SD hypervisor modules, and embedded diagnostics, all components
are purposefully designed and built to improve server reliability and usability. Dell has
developed its reliability processes by:
Employing robust validation and testing processes for durable product design
Verifying each supplier meets stringent quality standards
Implementing a ―one-touch‖ build process to ensure that one person is
responsible for the entire server build, resulting in greater quality control
Ensuring that every fully configured Dell server is tested (and re-tested) before
it leaves the factory
Introducing Unified Server Configurator (USC) which offers embedded and
persistent diagnostics with no media required to help minimize downtime
Utilizing robust and durable industrial materials to enable long product
lifecycles
Improving redundancy generation over generation by adding features such as
dual internal failsafe SD modules to provide failover at the hypervisor level.
In addition to these quality measures, all 11th Generation servers are designed with
external ports, power supplies, and LED lights or LCD screens in the same location for
a more efficient and familiar user experience, as well as easy installation and
deployment.

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Dell PowerEdge R815 Technical Guide
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1.1.3 Efficient Infrastructure
Limitations on space, power, and cooling capacity combined with rising energy costs
present enormous challenges for IT. Our newest Dell PowerEdge servers are made to
deliver energy efficiency as a design standard while helping to meet the performance
and budget goals your infrastructure requires. Energy-efficient system design built
with Energy Smart technologies such as power capping, power inventory, and power
budgeting help to better manage power within your specific environment.
Included in the PowerEdge R815 chassis are efficient fans, which spin in accordance
with server workload demands. In addition, the internal shrouding and logical layout of
the internal components aids with airflow direction, helping to keep the server cool.
The PowerEdge R815 also includes power-management features such as volt
regulators, power-regulating processors, and an interactive LCD screen for access to
power consumption information.
1.1.4 Intelligent, Connected Systems Management
The Dell Lifecycle Controller (an integrated chip) is the engine for advanced
embedded management that is delivered as part of the iDRAC6 Express or optional
iDRAC6 Enterprise in the PowerEdge R815. It is accessed through a single console
called the Unified Server Configurator. Administrators can simplify tasks by performing
a complete set of provisioning functions such as system deployment, system updates,
hardware configuration, and diagnostics in the pre-OS environment. This avoids the
need to use and maintain multiple pieces of disparate CD/DVD media. The PowerEdge
R815 also features an interactive LCD screen positioned on the front of the server for
ease of monitoring.
1.2 Comparison
Table 1. Comparison of PowerEdge R815, R905, and R810 Servers
Feature
R815
R905 (predecessor)
R810
Processor
AMD Opteron™ 6100
series processors
AMD
Opteron™ 8200
or 8300 series
processors
Intel®Xeon®
Processor 6500 and
7500 Series
# Sockets
4
4
2 or 4
# Cores
8 or 12
4 or 6
4, 6, or 8
L2/L3 Cache
L1 128K/core
L2 512K/core
L3 12 MB
12-24MB
Chipset
AMD SR5650, SR5670,
& SP5100
HT1100
Intel®7500
DIMMs
32
(1, 2, 4, 8, and 16GB
DDR3)
32
(512MB and 1, 2, 4, and
8GB DDR2)
32
(1, 2, 4, 8, 16 GB)

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Dell PowerEdge R815 Technical Guide
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Feature
R815
R905 (predecessor)
R810
Min/Max RAM
8GB/512GB
4GB/256GB
Up to 512GB
HD Bays
6x 2.5‖
5x 3.5‖ or 8x 2.5‖
6x 2.5‖
HD Types
SAS, SATA, SAS SSD
SAS
SAS, SATA, SAS SSD
Ext Drive Bay(s)
1
1
1
Int. HD Controller
H700
PERC6/I
H700
I/O Slots
6
7
6
RAID
H700
PERC6/I
H700
NIC/LOM
4x 1Gb LOMs
4x 1Gb LOMs or
2x 1Gb + 2x 10Gb LOMs
4x 1Gb LOMs
Power Supplies
Hot-swap redundant
Hot-swap redundant
Hot-swap redundant
Fans
6
4
6
Chassis
2U
4U
2U

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2System Overview
Table 2. Product Features Summary
Feature
Technical Specification
Form Factor
2U rack
Processors
AMD Opteron™ 6100 series processors
Processor
Sockets
4
Front Side Bus
or
HyperTransport
Hyper-Transport Links
Cache
L2: 512K/core
L3: 12MB
Chipset
AMD SR5650, SR5670 and SP5100
Memory1
Up to 512GB (32 DIMM Slots): 1GB/2GB/4GB/8GB/16GB 1333MHz
I/O Slots
6 PCIe slots + 1 Storage Slot:
Five x8 slots (Three with x16 connectors)
One x4 slot (with x8 connector)
One x4 Storage slot (with x8 connector)
RAID Controller
Internal Controllers:
PERC H200 (6Gb/s)
PERC H700 (6Gb/s) with 512MB
battery-backed cache; 512MB, 1GB
Non-Volatile battery-backed cache
External Controllers:
SAS 5/E with 512MB battery-backed
cache
PERC H800 (6Gb/s) with 512MB of
battery-backed cache; 512MB, 1GB
Non-Volatile battery-backed cache
PERC 6/E with 256MB or 512MB of
battery-backed cache
External HBAs (non-RAID):
6Gbps SAS HBA
SAS 5/E HBA
LSI2032 PCIe SCSI HBA
Drive Bays
Up to Six 2.5‖ hot-swappable SAS, SATA, or SSD drives
Maximum
Internal Storage
3TB

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Dell PowerEdge R815 Technical Guide
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Feature
Technical Specification
Hard Drives1
2.5‖ SATA (7.2K RPM): 160GB, 250GB,
500GB
2.5‖ Near Line SAS (7.2K RPM): 500GB
2.5‖ 6Gbs SAS (10K): 300GB, 600GB
2.5‖ SAS (10K RPM): 146GB, 300GB
2.5‖ SAS (15K RPM): 73GB, 146GB
2.5‖ SATA SSD: 50GB, 100GB
Comm-
unications
Optional add-in NICs :
Intel®10GBase-T Copper Single Port
NIC, PCI-E x8
Intel®Single Port Server Adapter,
10Gigabit, SR Optical, PCI-E x8
Broadcom®BMC57710 10Base-T
Copper Single Port NIC, PCI-E x8
Broadcom®10GbE NIC, Broadcom
Dual Port 10GbE SFP+
Intel®Gigabit ET Dual Port Server
Adapter
Intel®Gigabit ET Quad Port Server
Adapter
Brocade®CNA Dual port adapter
Emulex®CNA Standup HBA adapter
OCe10102-FX-D Emulex®CNA iSCSI
HBA stand-up adapter OCE10102-IX-D
Optional add-in HBAs:
Qlogic®QLE 2462 FC4 Dual Port 4
Gbps Fiber Channel HBA
Qlogic®QLE 220 FC4 Single Port 4
Gbps Fiber Channel HBA
Qlogic®QLE 2460 FC4 Single Port 4
Gbps Fiber Channel HBA
Qlogic®QLE2562 FC8 Dual-channel
HBA, PCI-E Gen 2 x4
Qlogic®QLE2560 FC8 Single-channel
HBA, PCI-E Gen 2 x4
Emulex®LPe-1150 FC4 Single Port 4
Gbps Fiber Channel HBA, PCI-E x4
Emulex®LPe-11002 FC4 Dual Port 4
Gbps Fiber Channel HBA, PCI-E x4
Emulex®LPe-12000 FC8 Single Port 4
Gbps Fiber Channel HBA, PCI-E Gen 2
x4
Emulex®LPe-12002 FC8 Dual Port 4
Gbps Fiber Channel HBA, PCI-E Gen 2
x4
Brocade®FC4 and 8GB HBAs
Power Supply
One hot-pluggable non-redundant
1100W power supply
Two hot-pluggable redundant 1100W
power supplies
Availability
Hot-plug hard drives, hot-plug redundant power, dual SD modules, ECC
memory, interactive LCD screen
Video
Matrox®G200eW w/ 8MB memory
Remote
Management
iDRAC6 Express (standard), iDRAC6 Enterprise, and vFlash (upgrade optional)
Systems
Management
BMC, IPMI2.0 compliant
Dell™ OpenManage™ featuring Dell Management Console
Unified Server Configurator
Lifecycle Controller enabled: iDRAC6 Express, optional iDRAC6 Enterprise,
and vFlash

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Dell PowerEdge R815 Technical Guide
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Feature
Technical Specification
Rack Support
ReadyRails™ sliding rails with optional cable management arm for 4-post
racks (optional adapter brackets required for threaded hole racks)
Operating
Systems
Microsoft®Windows Server®2008 SP2, x86/x64 (x64 includes Hyper-V™)
Microsoft®Windows Server®2008 R2, x64 (includes Hyper-V™ v2)
Microsoft®Windows®HPC Server 2008
Novell®SUSE®Linux®Enterprise Server
Red Hat®Enterprise Linux®
Sun®Solaris™
Optional Embedded Hypervisors:
Citrix®XenServer®
VMware®vSphere™ 4.1 (including VMware ESX®4.1 or VMware ESXi™ 4.1)
For more information on the specific versions and additions, visit
www.dell.com/OSsupport.
Featured
Database
Applications
Microsoft®SQL Server®solutions (see Dell.com/SQL)
Oracle®database solutions (see Dell.com/Oracle)
1GB means 1 billion bytes and TB equals 1 trillion bytes; actual capacity varies with preloaded
material and operating environment and will be less.

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Dell PowerEdge R815 Technical Guide
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3Mechanical
3.1 Chassis Description
The PowerEdge R815 is a rack mount 2U chassis that provides the following features:
Slide-out drive bay section to allow servicing of DIMMs below drives
Updated industrial design including a new LCD, bezel, and hard drive carriers
Toolless rack latches
Pull-out tray for Express Service Tag and customer labels
Support for persistent storage (internal USB and SD card slots and external SD
card slot)
Updated power supply removal process
3.2 Dimensions and Weight
Xa
Xb
Y
Za
w/ bezel
Za
w/o bezel
Zb
Zc
482.4 mm
443.1 mm
86.4 mm
35.0 mm
23.5 mm
717.5 mm
720.6 mm
Figure 1. R815 Chassis Dimensions
Maximum configuration weight is 24.1 kg.

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3.3 Front Panel View and Features
For more information, see the Front-Panel Features and Indicators section in the About
Your System chapter of the PowerEdge R815 Hardware Owner’s Manual.
Figure 2. Front View (without Bezel)
Figure 3. Front View (with Bezel)
3.4 Back Panel View and Features
For more information, see the Back-Panel Features and Indicators section in the About
Your System chapter of the PowerEdge R815 Hardware Owner’s Manual.
Figure 4. Rear View

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Dell PowerEdge R815 Technical Guide
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3.5 Power Supply Indicators
The base redundant system consists of two hot-plug 1100 W power supplies in a 1+1
configuration.
PowerEdge R815 power supplies have embedded cooling fans. The PSUs have one
status bi-color LED: green for AC power present and amber for a fault.
Table 3. Power Supply Status
LED
Power Supply Status
AC Power is not present
AC Power is present
Fault of any kind is detected
DC Power is applied to the system
↔
PSU mismatch (when hot-
plugged/swapped)
3.6 NIC Indicators
See the NIC Indicator Codes section in the About Your System chapter in the
PowerEdge R815 Hardware Owner’s Manual.
3.7 Side View
Figure 5. Side View

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Dell PowerEdge R815 Technical Guide
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3.8 Internal Chassis View
Figure 6. Internal Chassis View
3.9 Rails and Cable Management
Sliding ReadyRailsTM for 4-post Racks support the following:
Toolless installation in 19‖ EIA-310-E compliant square or unthreaded round
hole 4-post racks including all Dell 42xx & 24xx racks
oNOTE: Threaded 4-post racks require the static ReadyRails™ kit or 3rd
party conversion kits available through Dell Software & Peripherals
Full extension of the system out of the rack to allow serviceability of key
internal components
Optional cable management arm (CMA)
Measurements and adjustment ranges for the rack:
Rail depth without the CMA: 714 mm (with outer CMA brackets removed)
Rail depth with the CMA: 845 mm
Square-hole rack adjustment range: 686–883 mm
Round-hole rack adjustment range: 672–876 mm

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3.10 Fans
Six hot swappable fans are mounted in a fan gantry that is located in the chassis
behind the processors. Each fan has a blind mate 2x2 connector that plugs directly
into the CPU Board. There is an additional fan integrated in each power supply to cool
the power supply subsystem and also provide additional cooling for the whole system.
The Embedded Server Management logic in the system monitors the speed of the fans.
A fan failure or over-temperature in the system results in a notification by iDRAC6. All
system fans are pulse width modulated fans. Redundant cooling is supported with one
fan failing at a time.
3.11 Cabling
Cabling includes:
2x30 Control Panel cable
oVGA, LCD, I2C, miscellaneous like power and NMI buttons
2x6 IO power cable
oDistributes +12V to IO planar from PDB
SATA data cable
SAS Interface cables
oSAS0 and SAS1 cables connect SAS adapter to Backplane
2x10 bundled cables
o2-wire SATA device power cable
o5-wire USB data cable
o2x7 Backplane power cable
ZIF-connected LCD cable
Optional cable for Internal Dual SD module
Figure 7 shows a cabling diagram for the PowerEdge R815.

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Dell PowerEdge R815 Technical Guide
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SATA Optical
PSU
(1+1 configuration)
IO Planar
PDB
CPU Planar
2.5" SAS HDD Bays
Control Panel
PSU Connector
32-signal/6 blade
connector
IO
PWR
AIR MAX
CPU3
CPU1CPU2
CPU4
FanFan Fan FanFan Fan
2x30
connector USB conn
USB
2.0 USB 2.0
LCD
Power
Button
BackPlane
Video
2x7
Power
USB
2.0
RIPS
Conn
2x10
head
er
SAS
Data SAS Data
SAS Connectors SAS Connectors SAS Connectors
R
is
e
r
1
S
l
o
t
3
S
l
o
t
4
R
is
e
r
2Storage Adapter
S
A
S
x
4
Quad RJ-45 USB
2.0 USB 2.0 Video
USB
2.0 Serial Drac
2
x
3
0
C
o
n
n
LCD
RIPS module +
SD
SATA
power/
data
SATA
data
ID
D
I
M
M
D
I
M
M
D
I
M
M
D
I
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D
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M
M
PERC
Battery
Figure 7. Cabling Diagram

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3.12 Control Panel/LCD
The system control panel is located on the front of the system chassis to provide user
access to buttons, display, and I/O interfaces. Features of the system control panel
include:
ACPI-compliant power button with an integrated green power LED (controlled
by iDRAC6)
128x20 pixel LCD panel with controls
oTwo navigation buttons
oOne select button
oOne system ID button
Non-Maskable Interrupt (NMI) button (recessed)
Ambient temperature sensor
Two external USB 2.0 connectors (with an internal USB connector and Optional
Internal SD Module)
15-pin VGA connector
For detailed information on the control panel, see Front-Panel Features and Indicators
section in the About Your System chapter in the PowerEdge R815 Hardware Owner’s
Manual.
The LCD panel is a graphics display controlled by iDRAC6. Error codes can be sent to
the display by either iDRAC6 or BIOS.
BIOS has the ability to enter a Secure Mode through Setup, which will lock the Power
and NMI buttons. When in this mode, pressing either button has no effect but does not
mask other sources of NMI and power control.
Figure 8. LCD Panel
For information on LCD Panel Features, see LCD Panel Features section in the About
Your System chapter of the PowerEdge R815 Hardware Owner’s Manual.
3.13 Security
3.13.1 Cover Latch
A tooled entry latch is provided on the top of the unit to secure the top cover to the
chassis. See the Opening and Closing the System section in the Installing System
Components chapter of the PowerEdge R815 Hardware Owner’s Manual.

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3.13.2 Bezel
A metal bezel is mounted to the chassis front to provide the Dell ID. A lock on the
bezel is used to protect un-authorized access to system peripherals and the control
panel. System status via the LCD is viewable even when the bezel is installed.
The bezel is optional for PowerEdge R815 systems. For more information, see the
Front Bezel (Optional) section in Installing System Components chapter of the
PowerEdge R815 Hardware Owner’s Manual.
3.13.3 Hard Drive
The optional front bezel of the system contains a lock. A locked bezel secures the
system hard drives. See Hard Drives in the Hardware Owner’s Manual.
3.13.4 TPM
The TPM is used to generate/store keys, protect/authenticate passwords, and
create/store digital certificates. TPM can also be used to enable the BitLocker™ hard
drive encryption feature in Windows Server 2008.
TPM is enabled through a BIOS option and uses HMAC-SHA1-160 for binding. A Trusted
Computing Module (TCM) version of the planar is available for use where TCM is the
standard, for example, in China.
3.13.5 Power Off Security
The control panel is designed such that the power switch cannot be accidentally
activated. The lock on the bezel secures the switch behind the bezel. In addition,
there is a setting in the CMOS setup that disables the power button function.
3.13.6 Intrusion Alert
A switch mounted on the left riser board is used to detect chassis intrusion. When the
cover is opened, the switch circuit closes to indicate intrusion to ESM. When enabled,
the software can provide notification to the customer that the cover has been opened.
PowerEdge R815 only supports up to five minutes of operation with the cover off.
3.13.7 Secure Mode
BIOS has the ability to enter a secure boot mode via Setup. This mode includes the
option to lock out the power and NMI switches on the Control Panel or set up a system
password.
3.14 USB Key
An optional USB memory key installed inside your system can be used as a boot device,
security key, or mass storage device. The USB connector must be enabled by the
Internal USB Port option in the Integrated Devices screen of the System Setup
program.

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Figure 9. USB Port
3.15 Battery
A replaceable coin cell CR2032 3V lithium coin cell battery is mounted on the planar to
provide backup power for the Real-Time Clock and CMOS RAM on the SP5100 chip. An
optional 3.7V lithium ion RAID battery is available.
3.16 Field Replaceable Units (FRU)
Both planars contain a serial EEPROM to contain FRU information including Dell part
number, part revision level, and serial number. The iDRAC6 Enterprise contains a FRU
EEPROM. The backplane SEP and the power supply microcontroller are also used to
store FRU data.
3.17 User Accessible Jumpers, Sockets, and Connectors
See the Jumpers and Connectors chapter in the PowerEdge R815 Hardware Owner’s
Manual.