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The following information is a summary of the features and specifications of the server. Depending on the model, some features might not be available, or some specifications might not apply.

Table 1. Server Specifications


1U rack
  • Height: 43 mm (1.7 inches)

  • Width: 435 mm (17.1 inches)

    • With rack handles: 482 mm (18.98 inches)

    • Without rack handles: 435 mm (17.1 inches)

  • Depth: 545 mm (21.5 inches)

    The depth is measured from the front mounting flange of the rack to the rear of the server.


Maximum: 12.3 kg (27.1 lbs)

Processor (depending on the model)

This server supports one of the following Intel® processors:
  • Xeon® E

  • Pentium®

  1. For a list of supported processors, see Lenovo ServerProven website.
  2. Energy Star Certification is with limited configurations.


See Memory module installation rules and order for detailed information about memory configuration and setup.

  • Slots: 4 memory module slots

  • Minimum: 8 GB (1 x 8GB DIMM)

  • Maximum: 128 GB (4 x 32 GB DIMM)

  • Type:
    • ThinkSystem 8GB TruDDR4 3200 MHz (1Rx8, 1.2V) ECC UDIMM

    • ThinkSystem 16GB TruDDR4 3200 MHz (2Rx8, 1.2V) ECC UDIMM

    • ThinkSystem 32GB TruDDR4 3200 MHz (2Rx8, 1.2V) ECC UDIMM

Drive bays (depending on the model)

  • 2.5-inch models:

    • Supports up to eight hot-swap SAS/SATA drive bays.

    • Supports up to ten hot-swap SAS/SATA drive bays.

  • 3.5-inch models:

    • Supports up to four simple-swap SATA drive bays.

    • Supports up to three simple-swap SATA drive bays and one NVMe drive bay.

    • Supports up to four hot-swap SAS/SATA drive bays.

When all eight storage drives have been installed, and the system has been set to software RAID mode in the UEFI settings, regardless if the disks are configured as an array or as separate disks, drives 6 and 7 cannot be used to install the Windows operating system.

M.2 drive

Supports up to two SATA M.2 drives of the following drive form factors:
  • 42 mm (2242)

  • 60 mm (2260)

  • 80 mm (2280)

  • 110 mm (22110)

Supports the following M.2 drive capacity:
  • 128 GB

  • 240 GB

  • 480 GB (supported when ambient temperature is below 30°C)

  • 960 GB (supported when ambient temperature is below 30°C)

When an M.2 adapter is installed, eight SATA/SAS drives configured with software RAID is not supported.

PCIe riser cards and expansion slots

Up to two expansion slots (depending on the server configuration):
  • Slot 1-2: PCIe Gen4 x16 lane in x16 slot for Riser, the following slots are available depending on the riser card installed:
    1. X16 PCIe Riser card PCIe Gen4:
      • Slot 1: Not available

      • Slot 2, PCIe Gen4 x16 in x16 slot, full height

    2. X16/X8 PCIe Riser card PCIe Gen4:
      • Slot 1, PCIe Gen4 x8 in x8 slot, half-length (open-end)

      • Slot 2, PCIe Gen4 x8 in x16 slot, full-height

  • Slot 3 (on-board): PCIe Gen3 x4 lane in x8 slot

  • GPU adapters are only supported on servers with redundant power supply.

  • When a ThinkSystem Intel E810-DA2 Ethernet Adapter is installed, the following adapters are not supported:
    • ThinkSystem RAID 9350-16i 4GB Flash PCIe 12Gb Adapter

    • ThinkSystem RAID 9350-8i 2GB Flash PCIe 12Gb Adapter

    • ThinkSystem RAID 5350-8i PCIe 12Gb Adapter

    • ThinkSystem 4350-8i SAS/SATA 12Gb HBA

Integrated functions

  • Lenovo XClarity Controller, which provides service processor control and monitoring functions, video controller, and remote keyboard, video, mouse, and remote drive capabilities.

  • Light Path Diagnostics

  • Front standard connectors (front of server):

    • One USB 2.0 connector with XCC mobile support

    • One USB 3.2 Gen 1 connector

    • One front operator panel

    • One VGA connector (optional)

  • Rear standard connectors (rear of server):

    • Two USB 3.2 Gen 2 connectors

    • Two Ethernet connectors

    • One Lenovo XClarity Controller network connector

    • One VGA connector

    • One serial connector

    • One NMI button

RAID controllers (depending on the model)

  • Hardware RAID: Additional RAID levels supported when an optional RAID controller is installed. The hardware RAID controller supports RAID levels 0, 1, 5, and 10.

  • Intel VROC SATA RAID (Software RAID): A software RAID controller is integrated on the system board. The software RAID controller supports RAID levels 0, 1, 5, and 10.

  • ThinkSystem M.2 SATA/NVMe 2-Bay Enablement Kit (SATA only)

Video controller (integrated into Lenovo XClarity Controller)

Matrox G200

  • SVGA compatible video controller

  • Avocent Digital Video Compression

  • 16 MB of video memory (not expandable)

Maximum video resolution is 1600 x 1200 at 75 Hz.


Four internal system fans (40mm x 28mm)

Power supplies

  • Supports one fixed power supply: 300W Gold Power Supply

  • Supports up to two power supplies for redundancy support: 450W Platinum Power Supply

Operating System

Supported and certified operating systems:
  • Microsoft Windows Server

  • VMware ESXi

  • Red Hat Enterprise Linux

  • SUSE Linux Enterprise Server


Acoustical noise emissions (base configuration)

The server has the following acoustic noise emissions declaration:
  • Sound power level (LWAd):
    • Idling: 4.7 Bel (Typical), 5.7 Bel (Max)

    • Operating: 6.6 Bel (Typical), 6.8 Bel (Max)

  • Sound pressure level (LpAm):
    • Idling: 33.1 dBA (Typical), 43.3 dBA (Max)

    • Operating: 52.6 dBA (Typical), 53.6 dBA (Max)

  • These sound levels were measured in controlled acoustical environments according to procedures specified by ISO7779 and are reported in accordance with ISO 9296, SPL is measured by bystander position (1m).
  • The declared acoustic sound levels are based on the following configurations, which may change depending on the configuration or conditions, for example M.2 drive, Broadcom 57414 25Gb NIC, Broadcom 57416 10Gb NIC, T1000 etc.
    • Typical: 1x 80W CPU, 4x 32GB DIMM, 2x HDD or SSD, RAID 5350-8i, 1x 300W PSU

    • Max: 1x 95W CPU, 4x 32GB DIMM, 2x HDD or SSD, 2x 450W PSU

Heat output

Approximate heat output:
  • Minimum configuration: 379.08 BTU per hour (111 watts)
  • Maximum configuration : 802.5 BTU per hour (235 watts)

Electrical input

Sine-wave input (50–60 Hz) required

  • 300-Watt power supply:

    100-127 V ac /200-240 V ac, 4/2A

  • 450-Watt power supply:

    100-127 V ac /200-240 V ac, 5.8/2.9A


The ThinkSystem SR250 V2 complies with ASHRAE class A2 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification or fan failed condition.
The ThinkSystem SR250 V2 is supported in the following environment:
  • Air temperature:
    • Server on:
      • ASHRAE Class A2: 10°C to 35°C (50°F to 95°F); decrease the maximum ambient temperature 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); decrease the maximum ambient temperature 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); decrease the maximum ambient temperature by 1°C for every 125 m (410 ft) increase in altitude above 900 m (2,953 ft).

    • Sever off: 5°C to 45°C (41°F to 113°F)

    • Shipping/storage: -40 to 60°C (-40 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:

    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 solution. For information about the limits for particulates and gases, see Particulate contamination.