Owners Manual
Table Of Contents
- Dell EMC DSS8440 Installation and Service Manual
- Contents
- About this document
- DSS8440 system overview
- Technical specifications
- Chassis dimensions
- Chassis weight
- Processor specifications
- PSU specifications
- Cooling fans specifications
- System battery specifications
- Expansion card riser specifications
- GPU specifications
- Memory specifications
- Drive specifications
- Ports and connectors specifications
- Environmental specifications
- System diagnostics and indicator codes
- Initial system setup and configuration
- Pre-operating system management applications
- Options to manage the pre-operating system applications
- System Setup
- Viewing System Setup
- System Setup details
- System BIOS
- Viewing System BIOS
- System BIOS Settings details
- System Information
- Viewing System Information
- System Information details
- Memory Settings
- Viewing Memory Settings
- Memory Settings details
- Processor Settings
- Viewing Processor Settings
- Processor Settings details
- SATA Settings
- Viewing SATA Settings
- SATA Settings details
- Boot Settings
- Viewing Boot Settings
- Choosing system boot mode
- Changing boot order
- Network Settings
- Viewing Network Settings
- Network Settings screen details
- UEFI iSCSI Settings
- Viewing UEFI iSCSI Settings
- UEFI iSCSI Settings details
- Integrated Devices
- Viewing Integrated Devices
- Integrated Devices details
- Serial Communication
- Viewing Serial Communication
- Serial Communication details
- System Profile Settings
- Viewing System Profile Settings
- System Profile Settings details
- System Security
- Viewing System Security
- System Security Settings details
- Creating a system and setup password
- Using your system password to secure the system
- Deleting or changing system and setup password
- Operating with setup password enabled
- Redundant OS Control
- Viewing Redundant OS Control
- Redundant OS Control screen details
- Miscellaneous Settings
- Viewing Miscellaneous Settings
- Miscellaneous Settings details
- iDRAC Settings utility
- Device Settings
- Dell Lifecycle Controller
- Boot Manager
- PXE boot
- Installing and removing system components
- Safety instructions
- Before working inside your system
- After working inside your system
- Recommended tools
- System cover
- Front bezel
- Air shroud
- Drives
- Drive backplane
- Power supply unit
- Expansion cards and expansion card risers
- Removing a GPU
- Installing a GPU
- Removing a GPU support bracket
- Installing a GPU support bracket
- Removing the PCIe switch board
- Installing the PCIe switch board
- Removing a GPU power interposer board
- Installing a GPU power interposer board
- Removing a butterfly module and riser 3 board
- Installing the riser 3 board and butterfly module
- Nvidia Tesla T4 GPU
- Nvidia A100 GPU and NVLink bridge
- Nvidia A40 GPU and NVLink bridge
- Processor and heat sink
- System memory
- Riser 2 module
- Riser 1 module
- Network daughter card
- System board tray module
- System board and power interposer board
- Backup battery
- Power distribution board
- PSB power interposer board
- Front control module
- Fan louvers
- Cooling fans
- Fan cage
- Handle
- Slide rail installation
- Cable Routing
- Dell EMC DSS8440 cable instruction
- 3M cable Installation-Config A left
- 3M cable Installation-Config A right
- Fan cable assembly to fan bracket
- Fan cable MB-PDB assembly to MB
- Fan cable MB-PDB assembly to PDB
- Front control cable assembly control board to MB
- GPU power cable assembly GPU card to PSB
- IDC cable MB-PDB assembly to PDB
- IDC cable MB-PDB assembly to MB
- IDC cable PDB-PIB assembly to PIB
- IDC cable PIB-PDB assembly to PDB
- IDC cable Riser1-PDB assembly to PDB
- IDC cable Riser1-PDB assembly to riser board1
- IDC cable PIB-PDB assembly to PDB
- IDC cable Riser 2- PDB assembly to riser board 2
- Mini SAS HD cable assembly PERC-HDBP
- Mini SAS HD cable assembly HDBP-MB
- Power cable BP-PDB assembly to BP
- Power cable BP-PDB assembly to PDB
- Power cable assembly to PDB
- Power cable assembly to PIB
- Power cable1 assembly to Riser1
- Power cable2 Riser-PDB assembly to PDB
- Power cable2 Riser-PDB assembly to Riser
- Jumpers and connectors
- Getting help
Processor Settings details
About this task
The Processor Settings screen details are explained as follows:
Option Description
Logical Processor
Enables or disables the logical processors and displays the number of logical processors. If this option is
set to Enabled, the BIOS displays all the logical processors. If this option is set to Disabled, the BIOS
displays only one logical processor per core. This option is set to Enabled by default.
Virtualization
Technology
Enables or disables the virtualization technology for the processor. This option is set to Enabled by
default.
Adjacent Cache
Line Prefetch
Optimizes the system for applications that need high utilization of sequential memory access. This option
is set to Enabled by default. You can disable this option for applications that need high utilization of
random memory access.
Hardware
Prefetcher
Enables or disables the hardware prefetcher. This option is set to Enabled by default.
Software
Prefetcher
Enables or disables the software prefetcher. This option is set to Enabled by default.
DCU Streamer
Prefetcher
Enables or disables the Data Cache Unit (DCU) streamer prefetcher. This option is set to Enabled by
default.
DCU IP
Prefetcher
Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default.
Sub NUMA
Cluster
Sub NUMA Clustering (SNC) is a feature for breaking up the LLC into disjoint clusters based on address
range, with each cluster bound to a subset of the memory controllers in the system. It improves average
latency to the LLC. Enables or disables the Sub NUMA Cluster. This option is set to Disabled by default.
UPI Prefetch Enables you to get the memory that is read started early on DDR bus. The Ultra Path Interconnect (UPI)
Rx path will spawn the speculative memory that is read to Integrated Memory Controller (iMC) directly.
This option is set to Enabled by default.
LLC Prefetch Enables or disables the LLC Prefetch on all threads. This option is set to Disabled by default.
Dead Line LLC
Alloc
Enables or disables the Dead Line LLC Alloc. This option is set to Enabled by default. You can enable this
option to enter the dead lines in LLC or disable the option to not enter the dead lines in LLC.
Directory AtoS Enables or disables the Directory AtoS. AtoS optimization reduces remote read latencies for repeat read
accesses without intervening writes. This option is set to Disabled by default.
Logical Processor
Idling
Enables you to improve the energy efficiency of a system. It uses the operating system core parking
algorithm and parks some of the logical processors in the system which in turn allows the corresponding
processor cores to transition into a lower power idle state. This option can only be enabled if the
operating system supports it. It is set to Disabled by default.
Configurable TDP Enables you to configure the TDP level. The available options are Nominal, Level 1, and Level 2. This
option is set to Nominal by default.
NOTE: This option is only available on certain stock keeping units (SKUs) of the processors.
SST-
Performance
Profile
Enables you to reconfigure the processor using Speed Select Technology.
Number of Cores
per Processor
Controls the number of enabled cores in each processor. This option is set to All by default.
Processor Core
Speed
Specifies the maximum core frequency of the processor.
Processor n
NOTE: Depending on the number of processors, there might be up to processors listed.
The following settings are displayed for each processor that is installed in the system:
Pre-operating system management applications 25