The Dell PowerEdge R940 Rack Server is a powerful four-socket server designed to deliver extensive compute performance, local storage, and a large memory footprint. Its architecture is built to support demanding enterprise applications that require high levels of performance and scalability.

Processor

The Dell PowerEdge R940 supports:

• Up to four 2nd Generation Intel® Xeon® Scalable processors.
• Up to 28 cores per processor.

Memory

The PowerEdge R940 provides extensive DDR4 memory scalability for demanding enterprise environments.

Memory Slots

• 48 DDR4 DIMM slots.

Memory Types

The server supports:

• RDIMM
• LRDIMM

Memory Speed

• Up to 2933 MT/s.

Maximum Memory Capacity

• Up to 6 TB.

The server also supports:

• Up to 12 NVDIMMs with a maximum capacity of 384 GB.
• Up to 24 Intel® Optane™ Persistent Memory modules.
• Up to 12.28 TB of persistent memory.
• Up to 15.36 TB when combining persistent memory with LRDIMM.

The PowerEdge R940 supports registered ECC DDR4 DIMMs only.

Storage Controllers

The Dell PowerEdge R940 supports multiple internal and external storage controller options.

Internal Controllers

Available internal controllers include:

• PERC H330
• PERC H730P
• PERC H740P
• HBA330

External Controllers

Available external controller options include:

• PERC H840
• 12 Gbps SAS HBA

Software RAID

• S140

Internal Boot

Internal boot options include:

• Boot Optimized Storage Subsystem (BOSS)
• Hardware RAID
• 2 x M.2 SSDs
• 240 GB or 480 GB M.2 SSD options
• Internal Dual SD Module

Drive Bays and Storage

The PowerEdge R940 supports extensive front-drive storage configurations.

Front Drive Bays

The server supports:

• Up to 24 x 2.5-inch SAS/SATA HDD or SSD drives.
• Up to 12 NVMe PCIe SSDs.
• Maximum storage capacity of up to 184.32 TB.

Power Supplies

The Dell PowerEdge R940 supports several power supply configurations.

Gold

• 1100 W -48 VDC

Platinum

• 1100 W
• 1100 W 380 VDC
• 1600 W
• 2000 W
• 2400 W

Titanium

• 1600 W HLAC
• 2600 W HLAC

The server supports hot-plug power supplies with a full redundancy option.

Fans

The PowerEdge R940 supports:

• Up to 8 hot-plug fans.
• Full fan redundancy.

Form Factor

The Dell PowerEdge R940 is designed as a:

• 3U Rack Server

Dimensions and Weight

The server dimensions are:

• Height: 130.3 mm (5.13 inches)
• Width: 434 mm (17.08 inches)
• Depth: 784.2 mm (30.8 inches)
• Weight: 49.9 kg (110 lbs.)

The listed dimensions do not include the bezel.

Embedded Management

The PowerEdge R940 provides several embedded management capabilities, including:

• IPMI 2.0 compliance
• iDRAC9
• iDRAC Direct
• iDRAC RESTful API with Redfish
• Optional Quick Sync 2 wireless module

Bezel

Available bezel options include:

• Optional LCD bezel
• Security bezel

OpenManage Software

The Dell PowerEdge R940 supports several OpenManage solutions, including:

• OpenManage Enterprise
• OpenManage Mobile
• OpenManage Power Center

Integrations and Connections

The PowerEdge R940 supports integration with several enterprise management platforms.

Integrations

Supported integrations include:

• Microsoft® System Center
• VMware® vCenter™
• BMC Truesight
• Red Hat® Ansible Modules

Connections

Supported connections include:

• Nagios Core
• Nagios XI
• Micro Focus Operations Manager
• IBM Tivoli Netcool/OMNIbus Tools

Security

The Dell PowerEdge R940 includes several integrated security capabilities.

Security features include:

• Optional TPM 1.2/2.0
• Cryptographically signed firmware
• Secure Boot
• System Lockdown with iDRAC Enterprise or Datacenter
• Secure Erase

Network Connectivity

The PowerEdge R940 supports several Network Daughter Card options, including:

• 4 x 1 GbE
• 4 x 10 GbE
• 2 x 10 GbE + 2 x 1 GbE
• 2 x 25 GbE

Ports

Front Ports

The front panel includes:

• 1 x dedicated iDRAC Direct USB port
• 2 x USB 3.0 ports
• 1 x VGA port

Rear Ports

The rear panel includes:

• 1 x dedicated iDRAC network port
• 1 x Serial port
• 2 x USB 3.0 ports
• 1 x VGA port

Video

The PowerEdge R940 includes:

• 2 x VGA

PCIe Expansion

The Dell PowerEdge R940 supports extensive PCIe expansion capabilities, including:

• Up to 13 PCIe Gen3 slots.
• 3 x8 slots.
• 10 x16 slots.

Supported Operating Systems and Hypervisors

The Dell PowerEdge R940 supports several operating systems and virtualization platforms, including:

• Canonical® Ubuntu® Server LTS
• Citrix® Hypervisor
• Microsoft Windows Server® LTSC with Hyper-V
• Oracle® Linux
• Red Hat® Enterprise Linux
• SUSE® Linux Enterprise Server
• VMware® ESXi