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Environmental specifications

Summary of the environmental specifications of server. Depending on the model, some features might not be available, or some specifications might not apply.

Heat output

Approximate heat output:

  • Minimum configuration: 527 BTU per hour (154 watts)
  • Maximum configuration: 1196 BTU per hour (350 watts)
Acoustical noise emissions

The server has the following acoustic noise emissions declaration:

  • Sound power level (LWAd):
    • Idling: 4.9 Bel (Typical), 6.2 Bel (Max.)
    • Operating 1: 6.3 Bel (Typical), 6.4 Bel (Max.)
    • Operating 2: 7.4 Bel (Typical), 7.4 Bel (Max.)
  • Sound pressure level (LpAm):
    • Idling: 35.7 dBA (Typical), 46.3 dBA (Max.)
    • Operating 1: 47.9 dBA (Typical), 50.0 dBA (Max.)
    • Operating 2: 60.8 dBA (Typical), 60.4 dBA (Max.)

Note
  • These sound levels were measured in controlled acoustical environments according to procedures specified by ISO7779 and are reported in accordance with ISO 9296.
  • Idle mode is the steady state in which the server is powered on but not operating any intended function. Operating mode 1 is 70% CPU TDP. Operating mode 2 is 100% CPU TDP.
  • The declared acoustic sound levels are based on the following configurations, which may change depending on configuration/conditions, for example M.2 drive.

    • Typical: Typical: 1x 80W CPU, 1x 16GB DIMM, 2x HDD, 1x 800W GW PSU

    • Max: 1x 95W CPU, 2x 32GB DIMM, 2x HDD , 1x 9350-8i RAID,1x 10G NIC, 2x 800W GW PSU

  • 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 a specific configuration is applied:

  • Keep ambient temperature to 45°C or lower when a 60W (or lower) TDP CPU and an 80W heat sink are installed.

  • Keep ambient temperature to 40°C or lower when a 70W (or lower) TDP CPU and an 80W heat sink are installed.

  • Keep ambient temperature to 35°C or lower when one of the following is installed:

    • 95W (or lower) TDP CPU and a 95W heat sink.

    • 80W (or lower) TDP CPU and an 80W heat sink.

    • GPUs, M.2 drives, U.2 drives, U.3 drives, and 25GbE Ethernet adapters.

Environment
ThinkSystem SR250 V3 complies with ASHRAE class A2 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification or fan failed condition.
  • Air temperature:
    • Operating
      • 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).
    • Server off: 5°C to 45°C (41°F to 113°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.
Note
The server is designed for standard data center environment and recommended to be placed in industrial data center.
  • Particulate contamination
    Attention: Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in combination with other environmental factors such as humidity or temperature might pose a risk to the device that is described in this document.