• Lenovo ThinkSystem SR650 – Versatile 2U Rack Server with Dual Intel® Xeon® Scalable CPUs

    Keywords

    Lenovo ThinkSystem SR650, Intel Xeon Scalable, 2U rack server, DDR5 memory, AnyBay storage, NVMe bays, dual-socket server, XClarity management, hot-swap drives, enterprise reliability

    Description

    The [Lenovo ThinkSystem SR650](#Lenovo ThinkSystem SR650) is a 2U, two-socket rack server engineered for small businesses through to large enterprises, delivering industry-leading reliability, management, and security in a flexible platform Lenovo Press. It supports up to two 2nd-Generation Intel® Xeon® Scalable processors with up to 28 cores each, delivering up to 56 cores and 112 threads for highly parallel workloads Lenovo Press.

    With 24 DDR5 DIMM slots (12 per CPU) supporting speeds up to 2933 MT/s—and up to 3 TB of memory capacity with 3DS RDIMMs—the SR650 accelerates in‐memory databases and virtualized environments while maintaining error correction and advanced mirroring features for data integrity Lenovo Press. The server’s AnyBay design allows mixing SAS, SATA, or NVMe drives in the same bays, offering up to 24×2.5″ or 14×3.5″ hot-swap bays, plus two rear 7 mm or M.2 boot drives to free primary bays for data storage.

    Lenovo’s XClarity Controller and XClarity Administrator provide agent-free, centralized lifecycle management—automating deployment, firmware updates, and health monitoring to reduce provisioning time by up to 95 %Lenovo Press. Comprehensive security features including TPM 2.0, Secure Boot, and ThinkShield protect your data from development through disposal Lenovo Press.

    Key Features

    • Dual Intel® Xeon® Scalable CPUs: Up to two 2nd-Gen Xeon SP processors, 28 cores and 2933 MT/s UPI links per CPU

    • Up to 3 TB DDR5 Memory: 24 DIMM slots supporting RDIMM, LRDIMM, 3DS RDIMM, and DCPMM for up to 7.5 TB in App Direct mode Lenovo Press

    • AnyBay Drive Bays: 24×2.5″ or 14×3.5″ hot-swap bays; mix SAS/SATA/NVMe; 2×7 mm/M.2 rear boot drives Lenovo Press

    • Persistent Memory Support: Up to 12 DCPMMs for sub-millisecond latency and increased VM density Lenovo Press

    • I/O Expansion: 1× LOM, 1× storage controller slot, up to 6× PCIe 3.0 slots; integrated PCIe 3.0 controller reduces latency

    • Enterprise RAS: SDDC/ADDDC memory protection, memory mirroring, memory rank sparing, and proactive PFA alerts

    • Hot-Swap Redundancy: Drives, PSUs, and fans can be serviced without downtime; light-path diagnostics speed repairs

    • XClarity Management: Embedded XClarity Controller, XClarity Administrator, Integrator plugins, and Energy Manager for 1:many automationLenovo Press

    Configuration

    ComponentSpecification
    Form Factor2U rack server (42.8 × 482.4 × 700 mm) Lenovo Documentation
    Processors2× Intel® Xeon® Scalable Gen 1/2 (Bronze–Platinum), up to 28 cores/CPU, 10.4 GT/s UPI links Lenovo Press
    Memory24× DIMM slots (6 channels/CPU, 2 DIMMs/channel); TruDDR5 RDIMM/LRDIMM, 3DS RDIMM, DCPMM; up to 2933 MT/s; 3 TB total (memory only) or 7.5 TB with DCPMM App Direct mode Lenovo Press
    Drive BaysFront: up to 24×2.5″ AnyBay or 14×3.5″ SAS/SATA; Rear: 2×7 mm or M.2 boot drives (RAID support) Lenovo Press
    RAIDOnboard SW RAID (0,1,5,10), ThinkSystem PCIe RAID/HBA cards, VROC/VMD Lenovo Press
    I/O Slots1× LOM, 1× internal storage controller slot, 6× PCIe 3.0 expansion slots Lenovo Press
    NetworkLOM options: 1 GbE/10 GbE/25 GbE; optional 40 GbE or 100 GbE adapters via PCIe or OCP 3.0 Lenovo Press
    Power Supplies2× hot-swap 550 W–1600 W Platinum/Titanium PSUs; N+N redundancy supported Lenovo Press
    ManagementLenovo XClarity Controller, XClarity Administrator, Integrator plugins, Redfish API, XClarity Energy Manager
    SecurityTPM 2.0, Secure Boot, ThinkShield suite, chassis intrusion switch (optional)

    Compatibility

    The ThinkSystem SR650 is certified on leading operating systems and hypervisors, including Microsoft Windows Server (2016–2022), Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and VMware vSphere ESXi Lenovo Press.

    Usage Scenarios

    Database & Analytics
    High core counts (56 cores, 112 threads) and up to 3 TB DDR5 memory enable in-memory databases and large OLAP queries with sub-second response times Lenovo Press.

    Virtualization & VDI
    Persistent memory modules and NVMe AnyBay drives reduce latency for VM boot storms, while 112 threads support dense VM consolidation on a single 2U chassis Lenovo Press.

    Cloud & Enterprise Applications
    Scalable CPU, memory, and storage options allow you to right-size the SR650 for cloud workloads and enterprise ERP, scaling up as demands grow without forklift upgrades Lenovo Press.

    Frequently Asked Questions

    Q1: What is the maximum memory capacity?“
    A1: The SR650 supports up to 3 TB of DDR5 memory with RDIMMs and up to 7.5 TB in App Direct mode with 12 DCPMMs (512 GB each) plus RDIMMs Lenovo Press.

    Q2: Can I mix SAS, SATA, and NVMe drives in the same bays?
    A2: Yes—as part of the AnyBay design, you can install SAS, SATA, or U.2 NVMe SSDs interchangeably in the front drive bays Lenovo Press.

    Q3: How does XClarity reduce management overhead?
    A3: XClarity Controller provides onboard, agent-free management; XClarity Administrator centralizes 1:many deployment, monitoring, and updates—cutting manual provisioning time by up to 95 % Lenovo Press.

    Q4: Which reliability features prevent unexpected downtime?
    A4: SDDC/ADDDC memory protection, Predictive Failure Analysis alerts, light-path diagnostics, and redundant hot-swap PSUs/fans/drives ensure continuous operation Lenovo Press.

    Q5: What power supply options are available?
    A5: Choose from 550 W to 1600 W Platinum or Titanium hot-swap PSUs, configured in N+N redundancy to ensure high availability Lenovo Press.

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