Owner's Manual
Table Of Contents
- Dell PowerEdge R920 System Owner's Manual
- About Your System
- Using The System Setup and Boot Manager
- Installing System Components
- Recommended Tools
- Front Bezel (Optional)
- Opening And Closing The System
- Inside The System
- Cable Management Tray
- System Memory
- General Memory Module Installation Guidelines
- Mode-Specific Guidelines
- Advanced ECC (Lockstep)
- Memory Optimized (Independent Channel) Mode
- Memory Sparing
- Memory Mirroring
- Fault Resilient Memory
- Sample Memory Configurations
- Removing A Memory-Riser Blank
- Installing A Memory-Riser Blank
- Removing A Memory Riser
- Installing A Memory Riser
- Removing Memory Modules From The Memory Riser
- Installing Memory Modules
- Memory Riser And Fan Cage
- Hard Drives
- Optical Drive (Optional)
- Cooling Fans
- Internal USB Memory Key (Optional)
- Expansion Cards And Expansion-Card Risers
- Expansion Card Installation Guidelines
- Removing The Left Expansion Card Riser Blank
- Installing The Left Expansion Card Riser Blank
- Removing The Right Expansion Card Riser Blank
- Removing An Expansion Card From Expansion-Card Risers 2 and 3
- Installing An Expansion Card Into The Expansion-Card Riser 2 and 3
- NDC Riser (I/O Riser 1)
- Network Daughter Card
- SD vFlash Card
- Internal Dual SD Module
- Internal SD Card
- Integrated Storage Controller Card
- RAID Battery
- Processors
- Power Supplies
- Hot Spare Feature
- Removing An AC Power Supply
- Installing An AC Power Supply
- Wiring Instructions For A DC Power Supply
- Assembling And Connecting The Safety Ground Wire
- Assembling The DC Input Power Wires
- Removing A DC Power Supply
- Installing A DC Power Supply
- Removing The Power Supply Blank
- Installing The Power Supply Blank
- Power Distribution Board
- System Battery
- Hard-Drive Backplane
- SAS Expander Daughter Card
- Control Panel Board
- System Board
- Troubleshooting Your System
- Safety First—For You And Your System
- Troubleshooting System Startup Failure
- Troubleshooting External Connections
- Troubleshooting The Video Subsystem
- Troubleshooting A USB Device
- Troubleshooting A Serial I/O Device
- Troubleshooting A Wet System
- Troubleshooting A Damaged System
- Troubleshooting The System Battery
- Troubleshooting Power Supplies
- Troubleshooting Cooling Problems
- Troubleshooting Cooling Fans
- Troubleshooting System Memory
- Troubleshooting An Internal USB Key
- Troubleshooting An SD Card
- Troubleshooting An Optical Drive
- Troubleshooting A Hard Drive
- Troubleshooting A Storage Controller
- Troubleshooting Expansion Cards
- Troubleshooting Processors
- Using System Diagnostics
- Jumpers And Connectors
- Technical Specifications
- System Messages
- Getting Help
Menu Item Description
Hardware Prefetcher Allows you to enable or disable hardware prefetcher. By default, the Hardware Prefetcher
option is set to Enabled.
DCU Streamer
Prefetcher
Allows you to enable or disable Data Cache Unit streamer prefetcher. By default, the DCU
Streamer Prefetcher option is set to Enabled.
DCU IP Prefetcher Allows you to enable or disable Data Cache Unit IP prefetcher. By default, the DCU IP
Prefetcher option is set to Enabled.
Execute Disable Allows you enable or disable execute disable memory protection technology. By default, the
Execute Disable option is set to Enabled.
Logical Processor
Idling
Allows you to enable or disable the OS capability to put logical processors in the idling state in
order to reduce power consumption. By default, the option is set to Disabled.
Number of Cores per
Processor
Allows you to control the number of enabled cores in each processor. By default, the Number
of Cores per Processor option is set to All.
Processor 64-bit
Support
Specifies if the processor(s) support 64-bit extensions.
Processor Core
Speed
Displays the maximum core frequency of the processor.
Processor Bus Speed Displays the bus speed of the processors.
NOTE: The processor bus speed option displays only when all four processors are
installed.
Processor 1
NOTE: The following settings are displayed for each processor installed in the system.
Family-Model-
Stepping
Displays the family, model and stepping of the processor as defined by Intel.
Brand Displays the brand name reported by the processor.
Level 2 Cache Displays the total L2 cache.
Level 3 Cache Displays the total L3 cache.
Number of Cores Displays the number of cores per processor.
SATA Settings Screen
Menu Item Description
Embedded SATA Allows the embedded SATA to be set to Off, ATA, AHCI, or RAID mode. By default, Embedded
SATA is set to AHCI Mode.
Port A Auto enables BIOS support for the optical device attached to SATA port A. By default, Port A is
set to Auto.
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