• Limited-Time Offer! Dell EMC PowerEdge R940 4-Socket 3U Rack Server R940—48 DIMMs, 24 NVMe & 15.36 TB Memory

    Keywords

    Dell EMC PowerEdge R940,#Dell EMC PowerEdge R940,R940,#R940,Intel Xeon Scalable,#Intel Xeon Scalable,DDR4 Memory,#DDR4 Memory,Optane DCPMM,#Optane DCPMM,NVMe Storage,#NVMe Storage,PCIe Gen3,#PCIe Gen3,OpenManage,#OpenManage,iDRAC9,#iDRAC9

    Description

    The Dell EMC PowerEdge R940 (#R940) features up to four 3rd Gen Intel® Xeon® Scalable processors delivering up to 28 cores per socket, paired with 48 DDR4 DIMM slots that support up to 15.36 TB of memory (including 24 Intel® Optane™ DC persistent memory modules) to accelerate in-memory database and real-time analytics workloads.
    With up to 24 NVMe PCIe SSD bays and 13 PCIe Gen 3 expansion slots, the R940 maximizes I/O throughput and eliminates storage bottlenecks, ensuring peak processor utilization under heavy transactional loads Dell.
    Flexible chassis configurations—from 8×2.5″ HDD/SSD to 24×2.5″ NVMe—allow right-sizing for cost-effective capacity or all-flash performance. Redundant hot-swappable PSUs (1,100–2,400 W) and 8-fan cooling maintain uptime in demanding environments Dell.
    Embedded iDRAC9 and OpenManage Enterprise provide unified discovery, remote management, firmware updates, and health monitoring, reducing operational overhead and speeding time-to-value.

    Key Features

    • 4-Socket 3U Design: Supports up to four Intel® Xeon® Scalable CPUs (up to 28 cores each) (#Intel Xeon Scalable) Dell

    • 48 DDR4 DIMM Slots: Up to 15.36 TB memory; 24 slots support Intel® Optane™ DC PMMs (#Optane DCPMM) Dell

    • 24 NVMe PCIe Bays: Front: 24×2.5″ NVMe (max 184.32 TB) or mixed SAS/SATA (#NVMe Storage) Dell

    • 13 PCIe Gen 3 Slots: High-bandwidth I/O for GPUs, NICs, and storage controllers (#PCIe Gen3) 

    • BOSS-S1 or BOSS-N1 Boot Subsystem: Dual M.2 NVMe SSDs with hardware RAID (#OpenManage) Dell

    • Redundant PSUs: Dual hot-swap 1,100 W–2,400 W Platinum/Titanium AC or DC options Dell

    • 8 Hot-Plug Fans: N+1 redundancy for robust cooling in 3U chassis Dell

    • Cyber-Resilient Security: Silicon root of trust, cryptographically signed firmware, secure boot, TPM 1.2/2.0 Dell

    Configuration

    ComponentSpecification
    ProcessorsUp to 4× 3rd Gen Intel® Xeon® Scalable (up to 28 cores/socket)
    Memory48× DDR4 slots; up to 15.36 TB (24× Optane DCPMM + 24× RDIMM @ 2666 MT/s) Dell
    Storage BaysFront: 24×2.5″ NVMe/SAS/SATA (max 184.32 TB) or 12×3.5″ SAS/SATA (max 192 TB) Dell
    Boot SubsystemBOSS-S1 / BOSS-N1: 2× M.2 NVMe SSDs or USB, HWRAID
    Expansion13× PCIe Gen 3 slots (various x8/x16 riser options) Dell
    ManagementiDRAC9, iDRAC Service Module, Quick Sync 2; OpenManage Enterprise, SupportAssist, Update Manager
    NetworkingIntegrated LOMs; optional OCP 3.0 mezzanine for high-speed NICs
    Power SuppliesDual hot-swap: 1100 W AC/DC, 1600 W, 2000 W, 2400 W AC; 1100 W DC Dell
    Cooling8× hot-plug fans, N+1 redundancy
    SecuritySigned firmware, secure boot, secure erase, TPM 1.2/2.0, system lockdown
    Form Factor3U rack server (130.3 mm H × 434 mm W × 784.2 mm D); ~49.9 kg

    Compatibility

    • Operating Systems: Canonical Ubuntu Server LTS; VMware ESXi; Windows Server with Hyper-V; RHEL; SUSE Linux Enterprise Dell

    • Storage Arrays: Supports Dell EMC PowerVault, Unity, and PowerMax integration via HBA355e/H840 controls

    • Management Tools: Dell OpenManage Integrations for Ansible, vCenter, Microsoft System Center, Nagios, BMC Truesight Dell

    Usage Scenarios

    In-Memory and Large Databases

    With up to 15.36 TB memory and 24 Optane DCPMMs, the R940 accelerates SAP HANA, Oracle Database In-Memory, and real-time analytics, eliminating paging and I/O stalls Dell.

    Enterprise Resource Planning (ERP/CRM)

    Deploy four Xeon® Scalable CPUs and 24 NVMe SSDs to support high-concurrency ERP/CRM systems (SAP, Salesforce), ensuring sub-millisecond transaction latencies.

    Dense Virtualization

    Consolidate hundreds of VMs per chassis using 48 DIMMs and 13 PCIe slots for vSAN, NSX, or Hyper-V clusters. OpenManage automates patching and health checks for zero-touch management .

    GPU-Accelerated Compute (R940xa)

    In R940xa configurations, combine up to four Xeon® CPUs with four GPUs for real-time database acceleration and AI inferencing, delivering consistent high performance under heavy parallel loads Dell.

    Frequently Asked Questions (FAQs)

    Q1: How many Optane DC persistent memory modules are supported?
    The R940 supports up to 24 Intel® Optane™ DC PMMs in half of its 48 DIMM slots for a combined total of 15.36 TB memory (#Optane DCPMM).

    Q2: Can the R940 boot from NVMe?
    Yes—the BOSS-N1 controller provides HWRAID for dual M.2 NVMe SSDs to deliver fast, redundant OS and hypervisor boot.

    Q3: What PSU options are available?
    Dual hot-swap PSUs ranging from 1,100 W to 2,400 W (Platinum/Titanium AC/DC) support full redundancy and mixed-mode configurations (#OpenManage).

    Q4: Does the R940 support four processors?
    Yes—up to four 3rd Gen Intel Xeon® Scalable CPUs can be installed, delivering up to 112 cores per chassis for extreme multi-threaded workloads.

    Q5: How is remote management handled?
    Dell iDRAC9 with Quick Sync 2 and OpenManage Enterprise provide unified discovery, health telemetry, firmware lifecycle automation, and zero-touch deployment.

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