The Lenovo ThinkSystem SR850 V2 is a 4-socket server that is densely packed into a 2U rack design. The server offers technology advances, including third-generation Intel Xeon Scalable processors with support for Intel Optane Persistent Memory 200 Series, and scale-up capacity with up to 12TB of system memory, up to 7x PCIe slots, and up to 24x 2.5-inch drive bays.

Lenovo Thinksystem SR850 Gen 2

Suggested uses: Mission critical scaling up from 2S systems such as enterprise virtualization, CRM, ERP, SQL databases, VDI and small-mid sized SAP HANA computing environments.

Machine types7X18 – 1 year warranty
7X19 – 3 year warranty
Form factor2U rack.
ProcessorUp to four Intel Xeon Processor Scalable Family of processors, either Gold or Platinum level processors (formerly codename “Skylake”). Supports processors up to 28 cores, core speeds up to 3.6 GHz, and TDP ratings up to 205W. Two processor sockets on the system board and two processors on the Processor and Memory Expansion Tray (standard on most models). Two Intel Ultra Path Interconnect (UPI) links at 10.4 GT/s each. Four processors are connected in a ring topology.
ChipsetIntel C624 “Lewisburg” chipset
MemoryUp to 48 DIMM sockets (12 DIMMs per processor) supporting Lenovo TruDDR4 DIMMs at up to 2666 MHz. RDIMMs,  LRDIMMs and 3DS RDIMMs are supported, but memory types cannot be mixed. There are 24 DIMM sockets on the system board, and an additional 24 DIMM sockets on the processor and memory expansion tray (standard on most models).
Memory maximumsWith RDIMMs: Up to 1.5 TB with 48x 32 GB RDIMMs and four processors.
With LRDIMMs: Up to 3.0 TB with 48x 64 GB LRDIMMs and four processors.
With 3DS RDIMMs: Up to 6.0 TB with 48x 128 GB 3DS RDIMMs and four processors (requires M-suffix processors that support greater than 786 GB memory per processor)
Memory protectionECC, SDDC (for x4-based memory DIMMs), ADDDC (for x4-based memory DIMMs), memory mirroring, and memory sparing.
Disk drive baysUp to 16 2.5-inch hot-swap SAS/SATA bays.
Maximum internal storage245.76TB using 16x 15.36TB 2.5-inch SAS SSDs61.44TB using 8x 7.68TB 2.5-inch NVMe SSDs38.4TB using 16x 2.4TB 2.5-inch HDDs
Storage controllerNo embedded RAID12 Gb SAS/SATA RAID adapters:RAID 530i (cacheless) supports RAID 0, 1, 10, 5, 50RAID 730-8i with 1GB cache supports RAID 0, 1, 10, 5, 50RAID 730-8i with 2GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 60RAID 930-8i with 2GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 60RAID 930-16i and 24i with 4GB or 8GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 6012 Gb SAS/SATA non-RAID: 430-8i and 430-16i HBAs
Optical drive baysNo internal optical drive.
Tape drive baysNo internal backup drive.
Network interfacesIntegrated 10Gb Ethernet controller, based on the Intel Ethernet Connection X722. The server supports 1 of 6 available Phy adapters, providing either 2- or 4-port Gigabit Ethernet, 2- or 4-port 10 GbE with SFP+ connections or 2- or 4-port 10 GbE with RJ45 connections. One port can optionally be shared with the XClarity Controller (XCC) management processor for Wake-on-LAN and NC-SI support.
PCI Expansion slotsUp to 9 PCIe slots plus a slot reserved for a LOM Ethernet adapter, plus a slot for the M.2 adapter. Six slots plus the LOM slot are on the system board and three (slots 3-5) are through a riser card. Three riser cards are available. All slots are available with two processors. The slots are as follows:Slot 1: PCIe 3.0 x16 (low profile)Slot 2: PCIe 3.0 x8 (low profile)Slot 3-5: Riser card slots (choices are x8/x8/x8, x8/x8/x8ML2 and x8/x16ML2)Slot 6: PCIe 2.0 x2 / 6 Gb SATA slot reserved for M.2 adapter and drivesSlot 7: Reserved for Ethernet LOM phy adapterSlot 8: PCIe 3.0 x8 (low profile)Slot 9: PCIe 3.0 x8 (low profile)Slot 10: PCIe 3.0 x8 (low profile)Slot 11: PCIe 3.0 x16 (low profile)
PortsFront: Two USB 2.0 ports or one USB 2.0 and one USB 3.0 port, model dependent. The first USB 2.0 port can be configured to support local systems management by using the XClarity Administrator mobile app on a mobile device connected via a USB cable. Optional front VGA video port (CTO or field upgrade). Rear: Two USB 3.0 ports, one VGA video port, one DB-9 serial port, and one RJ-45 XClarity Controller (XCC) systems management port. The serial port can be shared with the XCC for serial redirection functions.Internal: Optional M.2 adapter in dedicated slot supporting one or two M.2 drives (for OS boot support, including hypervisor support).
CoolingSix N+1 redundant hot swap 60 mm fans (all six standard). One fan integrated in each power supply.
Power supplyUp to two hot-swap redundant AC power supplies (all 80 PLUS Platinum certification): 750 W, 1100 W and 1600 W AC options, supporting 220 V AC. 750 W and 1100 W options also support 110V input supply. In China only, all power supply options support 240 V DC. Second power supply requires either Processor and Memory Expansion Tray or a power interposer card.
VideoG200 graphics with 16 MB memory with 2D hardware accelerator, integrated into the XClarity Controller. Maximum resolution is 1920×1200 32bpp at 60Hz.
Hot-swap partsDrives, power supplies, and fans.
Systems managementXClarity Controller embedded management, XClarity Administrator centralized infrastructure delivery, XClarity Integrator plugins, and XClarity Energy Manager centralized server power management. XClarity Controller Advanced standard with the SR850; XClarity Controller Enterprise optional with software license upgrade. Light path diagnostics for local failure detection and reporting, with optional LCD diagnostics pull-out panel.
Security featuresPower-on password, administrator’s password, Trusted Platform Module (TPM), supporting TPM 1.2 or TPM 2.0. In China only, optional Trusted Cryptographic Module (TCM). Lockable top cover. Optional lockable front security bezel.
Operating systems supportedMicrosoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi. See the Operating system support section for specifics.
Limited warrantyThree-year or one-year (model dependent) customer-replaceable unit and onsite limited warranty with 9×5 next business day (NBD).
Service and supportOptional service upgrades are available through Lenovo Services: 4-hour or 2-hour response time, 6-hour fix time, 1-year or 2-year warranty extension, software support for Lenovo hardware and some third-party applications.
DimensionsWidth: 445 mm (17.5 in.), height: 87 mm (3.4 in.), depth: 765 mm (30.1 in.). See Physical and electrical specifications for details.
WeightMinimum configuration: 18 kg (40 lb.), maximum: 27 kg (59.6 lb)