• Lenovo SR850 2U server rack with black panel and 24x 2.5in bays
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Lenovo

Lenovo SR850 | ThinkSystem 4-Socket 2U Rack Server, 48 DIMM DDR4

SR850

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Description

The Lenovo ThinkSystem SR850 is a high-density 4-socket enterprise server in a compact 2U rack form factor, designed for virtualization, database consolidation, and business-critical applications. Supporting up to four Intel Xeon Scalable processors with up to 48 DDR4 DIMMs for massive memory capacity, the SR850 delivers flexible scalability with up to 16 hot-swap 2.5-inch drive bays including NVMe support, up to nine PCIe expansion slots, and OCP networking. Managed via Lenovo XClarity Controller with redundant power supplies for enterprise reliability.

Features

4-socket Intel Xeon Scalable processor support with UPI mesh interconnect for high-performance multi-processor configurations
- High-density memory capacity with up to 48 DIMM slots supporting DDR4 RDIMM, LRDIMM, and 3DS RDIMM at speeds up to 2933 MHz
- Lenovo AnyBay technology enabling flexible mix-and-match storage configurations with SAS, SATA, and NVMe drives in the same bays
- Direct-connect NVMe support with four motherboard connections for ultra-low-latency storage without PCIe switch adapters
- Intel Optane DC Persistent Memory support for accelerated in-memory database performance and application persistence
- Modular processor and memory expansion design allowing upgrade from 2-socket to 4-socket configuration without system replacement
- Up to 9 PCIe 3.0 expansion slots including 2x full-height, full-length x16 slots for high-bandwidth adapters and accelerators
- Integrated 10GbE networking with Intel X722 controller and choice of copper or fibre PHY adapters
- Dual M.2 SATA drive support with hardware RAID-1 mirroring for resilient OS boot independent of data storage bays
- Lenovo XClarity Controller with Redfish API support for standards-based remote management and automation
- Tool-free chassis design with hexagonal ventilation holes for optimized airflow and thermal efficiency
- Hot-swap redundant power supplies and cooling for high-availability configurations
- Predictive Failure Analysis and error detection for proactive hardware monitoring
- Energy-efficient 1.2V DDR4 memory reducing power consumption versus previous DDR3 generations

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: 2U rack-mount server
- Processor Support: Up to 4x Intel Xeon Scalable Family processors (2nd Gen Cascade Lake), up to 28 cores per CPU, up to 3.8 GHz
- Memory: Up to 48x DDR4 DIMM slots (12 per processor), supporting RDIMM, LRDIMM, and 3DS RDIMM, up to 2933 MHz, maximum 6 TB capacity
- Storage: Up to 16x 2.5-inch hot-swap drive bays (SAS/SATA), with up to 8x AnyBay bays supporting NVMe drives, plus optional 2x M.2 SATA drives for OS boot
- Expansion: Up to 9x PCIe 3.0 slots (including 2x PCIe x16), plus dedicated LOM slot and optional ML2 slot
- Network: Integrated Intel X722 10GbE controller with choice of 2-port or 4-port PHY adapter (GbE or 10GbE SFP+/RJ45), OCP 3.0 slot support
- Power: Redundant hot-swap power supplies (varies by configuration)
- Management: Lenovo XClarity Controller (embedded), XClarity Administrator support, Lightpath diagnostics
- Chipset: Intel C624
- Interconnect: Intel Ultra Path Interconnect (UPI) at 10.4 GT/s, mesh topology with 4-socket configuration
- Dimensions (HxWxD): 87mm x 445mm x 825mm (3.4" x 17.5" x 32.5")

FAQs

Q: What is the scalability path for the SR850 server?
A: The SR850 supports flexible scaling from two processors and 24 DIMMs to four processors and 48 DIMMs using a mezzanine Processor and Memory Expansion Tray that snaps into place. This allows you to start with a 2-socket configuration and upgrade to 4-socket as workload demands grow, without replacing the entire system.

Q: Can the SR850 mix NVMe and SAS/SATA drives in the same server?
A: Yes, the SR850 features Lenovo AnyBay technology which allows you to mix and match SAS, SATA, and NVMe drives in the same drive bays. Up to 8 of the 16 front drive bays can be configured as AnyBay, supporting direct-connect NVMe for ultra-fast storage alongside traditional SAS/SATA drives for tiered storage configurations.

Q: What types of workloads is the SR850 best suited for?
A: The SR850 excels at memory-intensive workloads including database applications (SQL, Oracle), virtualization platforms (VMware, Hyper-V), enterprise resource planning (ERP), customer relationship management (CRM), and server consolidation projects. The combination of high memory capacity, 4-socket CPU support, and flexible I/O makes it ideal for business-critical applications requiring scale-up architecture.

Q: Does the SR850 support Intel Optane Persistent Memory?
A: Yes, 2nd Generation Intel Xeon Scalable processors in the SR850 support Intel Optane DC Persistent Memory modules alongside standard DDR4 DIMMs. This provides an additional memory tier for accelerating large in-memory databases and reducing application restart times.

Q: How is the SR850 managed and monitored?
A: The SR850 includes the embedded Lenovo XClarity Controller for out-of-band systems management, providing remote console access, hardware monitoring, and firmware updates. It integrates with Lenovo XClarity Administrator for centralized management of multiple servers, and features Lightpath diagnostics for rapid visual identification of hardware issues.

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