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Dell EMC PowerEdge R940 Rack Server (3U, Four Socket)

The Dell EMC PowerEdge R940 is a powerful 3U rackmount server engineered for the most demanding enterprise workloads that require extreme compute performance, exceptional memory scalability and high throughput storage. Part of Dell's 14th Generation PowerEdge portfolio, the R940 is purpose built for mission critical applications including in memory databases, real time analytics, large scale virtualisation and enterprise scale workloads.

ServerSource provides full build to order flexibility, allowing you to configure the PowerEdge R940 to meet your exact workload requirements. Select processors, memory, storage, RAID, networking and acceleration options using our online configurator, or request a custom quote for complex or large scale deployments.

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Key Features and Advantages

Four socket Intel Xeon Scalable performance

The PowerEdge R940 supports up to four 2nd Generation Intel Xeon Scalable processors, with up to 28 cores per processor. This delivers up to 112 cores in a single 3U chassis, providing outstanding performance for data intensive and latency sensitive enterprise workloads.

Extreme memory scalability

The R940 supports up to 48 DDR4 DIMM slots, delivering up to 6 TB of RDIMM or LRDIMM memory at speeds up to 2933 MT/s. Supported configurations also include Intel Optane DC persistent memory and NVDIMM options, making the platform ideal for in memory databases and advanced analytics workloads.

High performance storage flexibility

Front bay configurations support up to 24 x 2.5 inch SAS or SATA drives, with support for up to 12 NVMe PCIe SSDs. Optional rear bays provide additional flexibility for boot or data storage, depending on configuration.

PCIe Gen3 expansion and acceleration

The R940 supports up to 13 PCIe Gen3 slots, depending on riser configuration. This enables extensive expansion for high speed networking, storage controllers and accelerator cards. Selected configurations support GPU or FPGA acceleration for specialised workloads.

RAID, HBA and boot options

A wide range of Dell PERC RAID controllers and SAS HBAs are supported. Boot options include the Dell Boot Optimised Storage Subsystem with dual M.2 SSDs, depending on configuration.

Enterprise class management and security

Integrated iDRAC9 with OpenManage Enterprise and Redfish support enables advanced lifecycle management, automation and remote administration. Security features include Secure Boot, cryptographically signed firmware, System Lockdown and Silicon Root of Trust.

Power and cooling for continuous operation

The R940 supports hot plug redundant power supplies across multiple wattages and efficiency ratings, along with fully redundant fan assemblies designed for reliable 24x7 enterprise operation.

Recommended Workloads and Best-Fit Use Cases

The Dell PowerEdge R940 is well suited to:

In memory databases

In memory databases such as SAP HANA and large SQL platforms requiring extreme memory capacity and low latency storage.

Advanced analytics and real time data processing

Ideal for advanced analytics and real time data processing workloads that benefit from exceptional CPU performance and large memory capacity.

Enterprise business systems and middleware

Well suited to core business systems and middleware that require reliable enterprise class performance and management features.

Large scale virtualisation and private cloud

Well suited to large scale virtualisation and private cloud environments that require flexible I/O and scalable resources.

Development, test and staging

A strong platform for development, test and staging environments where consistent performance and enterprise management are important.

VDI and accelerator-led workloads

VDI and accelerated workloads where GPU support is required (configuration dependent).

Example Build to Order Configurations

Use Case CPU & Memory Storage & I/O Configuration Description
Virtualisation host Two to four Xeon processors, 256 GB plus DDR4 NVMe and SSD mix Balanced platform for virtual machines
Database server High core Xeon, 256 GB plus DDR4 NVMe heavy configuration Low latency and high throughput
Enterprise application Two to four Xeon processors, 256 GB plus DDR4 SSD and HDD mix Reliable platform for business systems
Private cloud node Two to four Xeon processors, scalable memory NVMe and SAS storage Suitable for scale out deployments

Examples only. Final specifications depend on selected components, chassis options and availability.

Technical Specifications

High level overview of key R940 specifications.

  • Form factor: 3U rack server
  • Processors: Up to four 2nd Generation Intel Xeon Scalable processors
  • Memory: Up to 48 DDR4 DIMM slots, up to 6 TB RDIMM or LRDIMM
  • Persistent memory: Intel Optane DC persistent memory supported
  • Drive bays: Up to 24 x 2.5 inch SAS or SATA, with up to 12 NVMe SSDs
  • Expansion: Up to 13 PCIe Gen3 slots, configuration dependent
  • Management: iDRAC9 with OpenManage Enterprise

Why Buy from ServerSource

Fast Delivery

UK and EU delivery available with genuine Dell EMC hardware and full warranty support.

Competitive Pricing

Perfectly priced Dell EMC systems with transparent quote process and no hidden fees.

Expert Support

Pre sales technical consultation to ensure your R940 configuration meets your exact needs.

Build your Dell EMC PowerEdge R940 server online

Adjust CPUs, memory, storage, RAID, NICs and operating system options as needed, then submit your R940 configuration to our team for pricing and availability.

Configure Your Perfect r940 Server → Request a Custom Quote
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Dell PowerEdge R940 Technical Specifications

Detailed technical specifications for the Dell PowerEdge R940 3U rack server with Intel Xeon processors.

Processor Support

The R940 supports up to four 2nd Generation Intel Xeon Scalable processors, with up to 28 cores per processor, delivering up to 112 cores in a single 3U chassis for the most demanding enterprise workloads.

Storage and I/O Configuration

Component Specification Details
Boot Storage Boot options Boot configurations vary by build. Choose a suitable boot device based on your selected storage and controller options.
Storage Controllers Dell PERC RAID controllers, SAS HBAs, software RAID Controller options are configuration dependent; boot options such as BOSS with dual M.2 SSDs may also be available.
PCIe Generation PCIe Gen3 Up to 13 PCIe Gen3 slots, depending on riser configuration. Supports high speed networking, storage controllers and accelerator cards.
Drive Bays Front Up to 24 x 2.5 inch SAS or SATA drives, with support for up to 12 NVMe PCIe SSDs. Optional rear bays available.

Power and Thermal Specifications

Specification Value Notes
Power Supply Units Hot-plug redundant Platinum options Power supply options vary by configuration.
Cooling Air cooling Up to 4 cabled fans for reliable operation in data centre environments

Dell EMC PowerEdge R940 technical overview

The R940 platform includes:

What is the power consumption of the Dell R940?

The Dell PowerEdge R940 supports redundant hot-plug Platinum power supply options. Power consumption varies based on CPU configuration, memory, and storage choices.

Why choose a 3U Rackmount server?

3U rackmount servers like the Dell PowerEdge R940 provide excellent expandability while still maintaining efficient rack utilisation. The R940 is designed for demanding enterprise workloads, including large databases and in memory platforms (configuration dependent).

What makes the R940 well suited to enterprise workloads?

The R940 combines four socket compute capability with extreme memory capacity (up to 6 TB) and extensive PCIe expansion (up to 13 slots). This makes it a top tier choice for in memory databases, analytics platforms and mission critical enterprise applications where memory scale and performance are paramount.

Key Features Summary

  • Form factor: 3U rack server
  • Processors: Up to four 2nd Generation Intel Xeon Scalable processors
  • Memory: Up to 48 DDR4 DIMM slots, up to 6 TB RDIMM or LRDIMM
  • Persistent memory: Intel Optane DC persistent memory supported
  • Drive bays: Up to 24 x 2.5 inch SAS or SATA, with up to 12 NVMe SSDs
  • Expansion: Up to 13 PCIe Gen3 slots, configuration dependent
  • Management: iDRAC9 with OpenManage Enterprise

Dell EMC PowerEdge R940 build to order FAQ

Find answers to common questions about configuring and ordering your Dell EMC PowerEdge R940 server

Yes. Our online configurator covers a wide range of Dell EMC PowerEdge R940 options including CPUs, memory, hard drives, SSDs, RAID controllers, NICs and operating systems. Submit your configuration for a personalised quote with competitive pricing.

PowerEdge R940 servers are ideal for virtualisation, databases, private cloud and core business workloads that require strong compute performance, scalable memory and flexible storage in a compact 3U footprint.

Absolutely. Design a standard specification and repeat that build across multiple Dell EMC PowerEdge R940 servers. This simplifies lifecycle management, capacity planning and spares holdings, making fleet management more efficient and cost-effective.

Yes. ServerSource can configure a wide range of Dell EMC PowerEdge rack and tower servers. Visit our Dell EMC build to order online store to explore available options.

We validate every component choice for compatibility and real-world balance so that your custom r940 configuration is ready for production use. All servers come with genuine Dell EMC hardware, full manufacturer warranty, and expert pre-sales and after-sales support.

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