Specifications

Table 1. Specifications
Specification	Description
Dimension	4U server Height: Without foot stand: 448 mm (17.64 inches) With foot stand: 461.4 mm (18.17 inches) Width: Without foot stand: 174.2 mm (6.86 inches) With foot stand: 247.4 mm (9.74 inches) Depth: Without security door: 710.8 mm (27.98 inches) With security door: 733.8 mm (28.89 inches)
Weight (depending on the configuration)	2.5-inch drive configuration: Maximum: 39.28 kg (86.60 lb) 3.5-inch drive configuration: Maximum: 46.23 kg (101.92 lb)
Processor	Supports multi-core Intel Xeon processors, with integrated memory controller and Intel Mesh UPI (Ultra Path Interconnect) topology. Supports up to two 250W processors Designed for the LGA 4189 socket Scalable up to 52 cores (with two processors installed) Supports up to 4 UPI links at 11.2 GT/s Note Only two-socket type CPUs are supported in two CPU configurations. UPI function is only available when two or more processors are installed. For a list of supported processors, see: Lenovo ServerProven website
Memory	See Memory module installation rules and order for detailed information about memory configuration and setup. Minimum: 16 GB Maximum: 2048 GB using registered DIMMs (RDIMMs) 3072 GB using registered DIMMs (RDIMMs) and Persistent Memory Modules (PMEM) Slots: thirty-two DIMM slots Supports: 16 GB, 32 GB, 64 GB TruDDR4 3200 MHz RDIMM 128 GB TruDDR4 3200 MHz 3DS RDIMM 128 GB Persistent Memory Modules (PMEM) For a list of supported memory modules, see: Lenovo ServerProven website
Drive bays (varies by model)	Drive bays and drives supported by your server vary by model. Storage drive bays: Server models with 3.5-inch simple-swap drive bays Supports up to twelve SATA drives Server models with 3.5-inch hot-swap drive bays Supports up to sixteen SAS/SATA drives Supports up to eight SAS/SATA drives and eight NVMe drives Server models with 2.5-inch hot-swap drive bays Supports up to thirty-two SAS/SATA drives Supports up to sixteen SAS/SATA drives and sixteen NVMe drives Optical drive bays Two optical drive bays Supports up to one tape drive (RDX or LTO) and one optical disk drive Note The server supports the installation of 2.5-inch SSDs in a 3.5 inch disk bay through the use of a conversion kit. See Install a 2.5-inch drive into a 3.5-inch drive bay for details. When A2/L4 GPU(s) are installed, up to four drive backplanes are supported. When other types of GPUs are installed, only up to two backplanes or backplates are supported, and no optical drive or tape drive can be installed. See Technical rules for system fans for detailed information about the storage limitations in different server configurations..
M.2 drive	Supports up to two M.2 drives: 42 mm (2242) 60 mm (2260) 80 mm (2280) 110 mm (22110)
Expansion slots	Nine PCIe expansion slots are available: Slot 1: PCIe4 x16, 75W, Full-height, half-length Slot 2: PCIe4 x8 (open end), 75W, Full-height, half-length Slot 3: PCIe4 x16, 75W, Full-height, half-length Slot 4: PCIe4 x8 (open end), 75W, Full-height, half-length Slot 5: PCIe4 x16, 75W, Full-height, half-length Slot 6: PCIe4 x8 (open end), 75W, Full-height, half-length Slot 7: PCIe4 x16, 75W, Full-height, half-length Slot 8: PCIe3 x8 (open end), 75W, Full-height, half-length (requires additional cable connection, see PCIe slot 8 cable routing) Slot 9: PCIe4 x8 (open end), 75W, Full-height, half-length Note When Slot 8 is used: Up to 6 NVMe drives can be supported in 3.5-inch configurations with two NVMe/AnyBay backplanes. Up to 14 NVMe drives can be supported in 2.5-inch configurations with two NVMe/AnyBay backplanes. 3.5-inch configurations with two NVMe/AnyBay backplanes and no NVMe Retimer Adapter or one NVMe Retimer Adapter is not supported. 2.5-inch configurations with two NVMe/AnyBay backplanes and two NVMe Retimer Adapters or three NVMe Retimer Adapters are not supported.
Onboard NVMe connectors	Four onboard NVMe connectors are available: PCIe 1: Gen3 PCIe 2: Gen3 PCIe 3: Gen4 PCIe 4: Gen4 when connected to backplane, Gen3 when connected to PCIe slot 8 enable connector.
Input/Output (I/O) features	Front panel One USB 2.0 connector with Lenovo XClarity Controller management One USB 3.2 Gen 1 connector Rear panel One External LCD diagnostics handset connector Four USB 3.2 Gen 1 connectors Two 10Gb Ethernet connectors One VGA connector One serial-port-module slot One XClarity Controller network connector (RJ-45 Ethernet connector)
Network	Two 10Gb ethernet connectors One XClarity Controller network connector (RJ-45 Ethernet connector) Note Use CAT6A UTP cables rated at 625 MHz bandwidth for the 10Gb on-board LAN.
Storage controller	Twelve onboard SATA ports (only the first 8 drives can be configured using Intel VROC SATA RAID) Eight onboard NVMe ports (Intel VROC NVMe RAID) NVMe Retimer Adapter (Intel VROC NVMe RAID) Note ThinkSystem RAID 940-32i 8GB Flash PCIe Gen4 12Gb Adapter can only be installed in slot 9 in one CPU configurations, and installed in slot 9, 5, 6, 7, or 8 in two CPU configurations. ThinkSystem RAID 540-8i PCIe Gen4 12Gb Adapter cannot be mixed with other RAID/HBA. Onboard SATA 8-11 connector can only support ACHI mode when ThinkSystem M.2 NVMe 2-Bay RAID Enablement Kit or ThinkSystem M.2 SATA 2-Bay RAID Enablement Kit is installed. Drives connected to SATA 6-7 (from onboard SATA 4-7 connector) cannot be used for bootable Windows system disk when in RAID mode. For a list of supported adapters, see: Lenovo ServerProven website
Fans	Supports up to four hot-swap fans: 9238 single-rotor hot-swap fans 9256 dual-rotor hot-swap fans Note Single-rotor hot-swap fans cannot be mixed with dual-rotor hot-swap fans. When the system is power off but still plugged in to AC power, the fan in slot 4 may continue to spin at a much lower speed. This is the system design to provide proper cooling. See Technical rules for system fans for detailed information about fan configuration.
Power supply	Supports up to two power supplies with N+N redundancy: ThinkSystem 2400W (230V) v2 Platinum hot-swap power supply ThinkSystem 1800W (230V) v2 Platinum hot-swap power supply ThinkSystem 1800W (230V) v2 Titanium hot-swap power supply ThinkSystem 1100W (230V/115V) v2 Platinum hot-swap power supply ThinkSystem 1100W (230V) v2 Titanium hot-swap power supply ThinkSystem 750W (230V) v2 Titanium hot-swap power supply ThinkSystem 750W(230/115V) v2 Platinum hot-swap power supply Note 100V+ is only allowed on the following: 750W Platinum 1100W Platinum 200V+ is only allowed on the following: 750W Platinum 750W Titanium 1100W Platinum 1100W Titanium 1800W Platinum 1800W Titanium 2400W Platinum CAUTION 240 V dc input (input range: 180-300 V dc) is ONLY supported in Chinese Mainland. Power supplies with 240 V dc are not hot-swappable. To remove the power cord, ensure you have turned off the server or disconnected the dc power sources at the breaker panel. In order for the ThinkSystem products to operate error free in both a DC or AC electrical environment, a TN-S earthing system which complies to 60364-1 IEC 2005 standard has to be present or installed.
Minimal configuration for debugging	One processor in processor socket 1 One DRAM DIMM in DIMM slot 14 One power supply in PSU slot 1 One drive with RAID adapter and backplane or backplate (if OS is needed for debugging) Three single rotor fans in fan slot 1, 2, and 4. One fan filler in fan slot 3.
Environment	The ThinkSystem ST650 V2 server complies with ASHRAE Class A2 specifications. Depending on the hardware configuration, some models comply with ASHRAE Class A3 and Class A4 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification. Air temperature: Operating ASHRAE Class A2: 10°C to 35°C (50°F to 95°F); the maximum ambient temperature decreases by 1°C for every 300 m (984 ft) increase in altitude above 900 m (2,953 ft). ASHRAE Class A3: 5°C to 40°C (41°F to 104°F); the maximum ambient temperature decreases by 1°C for every 175 m (574 ft) increase in altitude above 900 m (2,953 ft). ASHRAE Class A4: 5°C to 45°C (41°F to 113°F); the maximum ambient temperature decreases by 1°C for every 125 m (410 ft) increase in altitude above 900 m (2,953 ft). Server off: -10°C to 60°C (14°F to 140°F) Shipment/storage: -40°C to 60°C (-40°F to 140°F) Maximum altitude: 3,050 m (10,000 ft) Relative Humidity (non-condensing): Operating ASHRAE Class A2: 8% to 80%; maximum dew point: 21°C (70°F) ASHRAE Class A3: 8% to 85%; maximum dew point: 24°C (75°F) ASHRAE Class A4: 8% to 90%; maximum dew point: 24°C (75°F) Shipment/storage: 8% to 90% Particulate contamination Attention Airborne particulates and reactive gases acting alone or in combination with other environmental factors such as humidity or temperature might pose a risk to the server. For information about the limits for particulates and gases, see Particulate contamination.
Acoustical noise emissions	The server has the following acoustic noise emissions declaration: Sound power level (L_WAd) Idling: Min: 5.0 Bel Typical: 5.6 Bel GPU: 7.2 Bel Operating: Min: 5.6 Bel Typical: 5.6 Bel GPU: 8.5 Bel Sound pressure level (L_pAm): Idling: Min: 37 dBA Typical: 41 dBA GPU: 57 dBA Operating: Min: 41 dBA Typical: 41 dBA GPU: 69 dBA Note The fans will temporarily run at higher speeds on system boot due to processor power calibration. These sound levels were measured in controlled acoustical environments according to procedures specified by ISO7779 and are reported in accordance with ISO 9296. The declared acoustic sound levels are based on the specified configurations, which may change slightly depending on configuration/conditions. Min configuration: one 105W processor, four 16 GB DIMMs, two 480 GB SSD drives, two onboard 10GB LAN ports, one 750W power supply unit. Typical configuration: two 125W processors, sixteen 32 GB DIMMs, eight SAS hard disk drives, one 530-8i RAID Adapter, two onboard 10GB LAN ports, two 750W power supply units. GPU configuration: two 165W processors, thirty-two 64 GB DIMMs, eight SAS hard disk drives, one 930-8i RAID adapter, two onboard 10GB LAN ports, eight Nvidia Tesla T4 GPU adapters, two 1800W power supply units. The declared acoustic noise levels may increase greatly, if high-power components are installed such as high-power NICs, high-power processors and GPUs. Government regulations (such as those prescribed by OSHA or European Community Directives) may govern noise level exposure in the workplace and may apply to you and your server installation. The actual sound pressure levels in your installation depend upon a variety of factors, including the number of racks in the installation; the size, materials, and configuration of the room; the noise levels from other equipment; the room ambient temperature, and employee's location in relation to the equipment. Further, compliance with such government regulations depends on a variety of additional factors, including the duration of employees' exposure and whether employees wear hearing protection. Lenovo recommends that you consult with qualified experts in this field to determine whether you are in compliance with the applicable regulations.
Ambient temperature management	Adjust ambient temperature when specific components are installed: Note Ensure to observe the fan installation rules and sequence in Technical rules for system fans. Keep ambient temperature to 30°C or lower when one or more of the following components are installed. Processors with 205 to 250 watts Thirty-two registered DIMMs (RDIMMs) with 128 GB or less GPU adapter Keep ambient temperature to 35°C or lower when one or more of the following components are installed. Processors with 165 to 195 watts Thirty-two registered DIMMs (RDIMMs) with 64 GB or less Persistent Memory Modules (PMEM) Retimer ThinkSystem Mellanox ConnectX series adapter Fibre Channel adapter NVMe drive RAID/HBA adapter External NIC adapter M.2 NVMe drive Keep ambient temperature to 40°C or lower when one or more of the following components are installed. Processors with 135 to 150 watts Keep ambient temperature to 45°C or lower when one or more of the following components are installed. Processors with 120 watts or less Thirty-two registered DIMMs (RDIMMs) with 32 GB or less Two backplanes/backplates
Operating systems	Supported and certified operating systems: Microsoft Windows Server VMware ESXi Red Hat Enterprise Linux SUSE Linux Enterprise Server References: Complete list of available operating systems: OS Interoperability Guide. OS deployment instructions: Deploy the operating system.

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