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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. The latest specifications information is always available at Lenovo Press website.

Acoustical noise emissions

The server has the following acoustic noise emissions declaration.

 StandardStorageGPU
Sound power levels (LWAd)
Idling6.6 Bel7.4 Bel7.4 Bel
Operating8.1 Bel7.5 Bel8.6 Bel
Sound pressure level (LpAm)
Idling49.9 dBA59.5 dBA59.5 dBA
Operating65.4 dBA61.3 dBA71.2 dBA

The declared sound levels are based on the following configurations, which may change depending on configurations or conditions.

Config.StandardStorageGPU
Chassis (2U)Front 16 x 2.5''Front 12 x 3.5''Front 16 x 2.5''
Fan4 x performance fans6 x performance fans6 x performance fans
Processor1 x 300 W1 x 240 W1 x 300 W
DIMM12 x 64 GB12 x 64 GB12 x 64 GB
Drive16 x 2.4 TB SAS HDDsFront 12 x 2 TB + rear 4 x 2 TB HDDs16 x 2.4 TB SAS HDDs
RAID1 x RAID 940-8i1 x RAID 940-16i1 x RAID 940-16i
OCPIntel E810-DA2 10/25GbE SFP28 2-Port OCP
PSU2 x 1800 W2 x 1800 W2 x 2400 W
GPUNoneNone3 x A100
Note

  • These sound levels were measured in controlled acoustical environments according to procedures specified by ISO7779 and are reported in accordance with ISO 9296.

  • 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.

Environment

ThinkSystem SR655 V3 complies with ASHRAE Class A2 specifications with most configurations, and depending on the hardware configuration, also complies with ASHRAE Class A3, and Class A4 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification.

Depending on the hardware configuration, SR655 V3 server also complies with ASHRAE Class H1 specification. System performance may be impacted when operating temperature is outside ASHRAE H1 specification.

The restrictions to ASHRAE support are as follows:

  • The ambient temperature must be limited to 35°C if the server has any of the following components:

    • Broadcom 57454 10GBASE-T 4-port OCP

    • Broadcom 57416 10GBASE-T 2-port OCP

    • PCIe network interface cards (NICs) at a rate greater than or equal to 100 GB

    • Parts with active optical cable (AOC) and at a rate of 25 GB

  • The ambient temperature must be limited to 30°C if the server has any of the following components:

    • 24 x 2.5" or 12 x 3.5" front bay, middle bay, or rear bay

    • GPU adapters

    • Parts with AOC and at a rate of greater than 25 GB

    • Group E (320W <= cTDP <= 400W) processors

    • 9754/9734/9654(P)/9554(P)/9174F processor in a front 8 x 2.5"/8 x 3.5"/16 x 2.5" standard configuration

  • The ambient temperature must be limited to 25°C if the server has any of the following components:

    • 9754/9734/9654(P)/9554(P)/9174F processor in a front 24 x 2.5"/12 x 3.5" configuration without middle/rear bay

    • 9754/9734/9654(P)/9554(P)/9174F processor in a front 8 x 2.5"/8 x 3.5"/16 x 2.5" + GPU configuration

    • Gen5 7.68 TB or larger capacity NVMe drives in a configuration with middle/rear bay

    • 24 x 2.5" front bay + GPU

    • Group A (240 W < cTDP ≤ 300 W) processor in a configuration with middle/rear bay

For detailed thermal information, see Thermal rules.

Note

When the ambient temperature is greater than the supported max temperature, the server will shut down (ASHRAE 45°C). The server will not power on again until the ambient temperature falls within the supported temperature range.

  • Air temperature:

    • Operating

      • ASHRAE class H1: 5°C to 25°C (41°F to 77°F)

        The maximum ambient temperature decreases by 1°C for every 500 m (1640 ft) increase in altitude above 900 m (2,953 ft)

      • 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: 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 H1: 8%–80%; maximum dew point: 17°C (62.6°F)

      • ASHRAE class A2: 8%–80%; maximum dew point: 21°C (70°F)

      • ASHRAE class A3: 8%–85%; maximum dew point: 24°C (75°F)

      • ASHRAE class A4: 8%–90%; maximum dew point: 24°C (75°F)

    • Shipment/storage: 8% to 90%

  • 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.