Lenovo ThinkSystem SR850 V4

Lenovo's newest 2U, up-to-4-socket mission-critical rack server (machine types 7DJS/7DJT/7DJU) for Intel Xeon 6700-series P-core processors ("Granite Rapids SP"), which integrate the chipset, connected via 3 UPI 2.0 links in a mesh topology. Up to 64 DDR5 DIMM slots plus CXL 2.0 memory modules, up to 24 x 2.5" or 32 x E3.S NVMe bays, two Gen5 OCP slots and optional open-loop liquid cooling (Lenovo Neptune). Built for SAP HANA and other large in-memory / scale-up workloads.

Memory

Slots: 64 DIMM (16 per CPU; 8 channels per CPU, 2 DIMMs per channel)
Max: 16 TB using 64 x 256 GB 3DS RDIMM and 4 processors
Types: Lenovo TruDDR5 RDIMM and 3DS RDIMM, up to 6400 MHz at 1 DPC / 5200 MHz at 2 DPC; CXL 2.0 memory modules supported in E3.S 2T front bays (4 CPUs required)
Protection: ECC, SDDC and ADDDC (x4 DIMMs), memory mirroring

Storage

Front 2.5": 8, 16 or 24 x 2.5" hot-swap bays: SAS/SATA, NVMe or AnyBay (SAS/SATA/NVMe) combinations
Front E3.S: Up to 32 x E3.S 1T hot-swap NVMe bays, or up to 16 x E3.S 2T bays for CXL memory modules (4 CPUs required)
M.2: 2 x rear hot-swap M.2 (full-height-slot configs only), or an internal non-hot-swap M.2 module for up to 2 drives; optional RAID 0/1
Onboard: Onboard NVMe ports with optional Intel VROC RAID
RAID / HBA: 8-, 16- and 32-port RAID adapters (PCIe 3.0/4.0); Tri-Mode support for mixed NVMe/SAS/SATA on AnyBay backplanes
Max capacity: 737.28 TB (24 x 30.72 TB 2.5" SAS SSD); 368.64 TB (24 x 15.36 TB NVMe); 184.32 TB (24 x 7.68 TB SATA); 57.6 TB (24 x 2.4 TB SAS HDD); 1,966.08 TB using 32 x 61.44 TB E3.S NVMe SSDs
Optical: None internal

Graphics

Onboard: Embedded graphics, 16 MB, in the XClarity Controller 3; two simultaneous video ports; max 1920x1200 32bpp at 60 Hz
Single-wide GPU: Up to 4 x NVIDIA L4 24GB (PCIe Gen4 passive, Controlled), slots 3/4/9/10; slots 3 and 9 run at PCIe x8
Double-wide GPU: Up to 2 x NVIDIA L40S 48GB (PCIe Gen4 passive, Controlled), slots 4 and 10; needs auxiliary power cable and the FHHL Gen5 PCIe riser (feature C95G)
Rules: GPUs supported only in the 3-riser configuration (base C946/C94D); all installed GPUs must be identical; full-length GPUs need the GPU Full Length Thermal Option Kit (4XH7B08885) as a field upgrade

Expansion

3-riser config: Up to 9x PCIe slots (mix of low-profile and full-height): up to 7x Gen5 + 2x Gen4; with 2x double-wide GPU installed, 7x slots (all Gen5)
OCP 3.0: 2 x dedicated OCP 3.0 SFF slots, PCIe 5.0 x16 host interface
2-CPU config: 3-riser layout drops to 4 usable PCIe slots (slots 3, 5, 9, 11) plus 2 OCP slots

Networking

OCP 3.0: 2 x dedicated OCP 3.0 SFF slots, PCIe 5.0 x16; 2-port/4-port adapters up to 400 GbE; one port per adapter can share with the XCC for Wake-on-LAN/NC-SI
Management: 1 x 1GbE RJ-45 dedicated management port

Power

PSU options: 1300 W, 2000 W, 2700 W, 3200 W hot-swap, 80 PLUS Platinum or Titanium; 230 V AC only (no 115 V); China also 240 V DC; also HVDC and -48 V DC options
Redundancy: Up to 2 hot-swap PSUs
Cooling: 6 x hot-swap dual-rotor 60 mm fans, N+1 redundant (tolerates a single-rotor failure); one additional fan per PSU; optional Lenovo Processor Neptune Core Module for open-loop water cooling

Ports

Front: External diagnostics port; optional 2 x USB 3 (5 Gb/s, one supports XCC local management); optional Mini DisplayPort v1.1a
Rear: 2 x USB 3 (5 Gb/s), 1 x VGA, 1 x RJ-45 1GbE XCC management port; optional DB-9 serial (installs in a slot)
Internal: Optional 1 x USB 3 connector for OS/license-key use

Physical

Form factor: 2U rack
Dimensions: 447 mm W x 87 mm H; depth 906 mm (35.7 in) for the 2.5" chassis, 946 mm (37.2 in) for the E3.S chassis
Weight: 42 kg (92.6 lb) max
Machine types: 7DJS (3-year warranty), 7DJT (1-year), 7DJU (SAP HANA, 3-year)

Management

BMC: XClarity Controller 3 (XCC3) on an ASPEED AST2600 BMC with OpenBMC; XCC3 Premier included, enabling remote control functions
Tools: XClarity One centralized management, XClarity Integrator plugins, XClarity Energy Manager
Local: Operator panel with status LEDs; optional External Diagnostics Handset with LCD
Security: Chassis intrusion switch, power-on/admin passwords, Root of Trust module with TPM 2.0 and Platform Firmware Resiliency (PFR); optional lockable front security bezel
Warranty: 1 or 3 years CRU and onsite, 9x5 NBD (machine-type dependent)

Operating systems

Supported: Microsoft Windows Server; Red Hat Enterprise Linux; SUSE Linux Enterprise Server; Ubuntu Server; VMware ESXi (planned support)

Processors

Intel Xeon 6714P
Intel Xeon 6724P
Intel Xeon 6728P
Intel Xeon 6738P
Intel Xeon 6748P
Intel Xeon 6768P
Intel Xeon 6788P