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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.

Attention

Environment quality must be maintain over the lifetime of the system to receive warranty and support on affecting components. For water quality requirement, see Lenovo Neptune Direct Water-Cooling Standards.

Acoustical noise emissions

The server has the following acoustic noise emissions declaration:

ConfigurationMinimalTypicalStorage richGPU rich

Declared mean A-weighted sound power level, LWA,m (B)

Statistical adder for verification, Kv (B)=0.4

  • Idling: 5.6 Bel

  • Operating: 7.6 Bel

  • Idling: 6.7 Bel

  • Operating: 8.7 Bel

  • Idling: 7.5 Bel

  • Operating: 7.7 Bel

  • Idling: 6.7 Bel

  • Operating: 8.3 Bel

Declared mean A-weighted emission sound pressure level, LpA,m (dB)

  • Idling: 41.3 dBA

  • Operating: 61.5 dBA

  • Idling: 52.5 dBA

  • Operating: 72.5 dBA

  • Idling: 60.1 dBA

  • Operating: 62.8 dBA

  • Idling: 52.5 dBA

  • Operating: 67.8 dBA

The declared sound levels are based on the following configurations, which may change depending on configurations or conditions.
ComponentMinimal configurationTypical configurationStorage rich configurationGPU rich configuration
FanEight standard fansEight performance fansEight performance fansEight performance fans
ProcessorTwo 240 W processorsTwo 300 W processorsTwo 240 W processorsTwo 300 W processors
Heat sinkTwo 1U performance heat sinksTwo 1U performance heat sinksTwo 1U performance heat sinksTwo 1U performance heat sinks
MemoryTwenty-four 64 GB RDIMMsTwenty-four 64 GB RDIMMsTwelve 64 GB RDIMMsTwenty-four 64 GB RDIMMs
DriveEight SAS hard disk drivesTen SAS hard disk drivesTwelve SAS hard disk drivesTen SAS hard disk drives
RAID adapterOne 440-16i CFF RAID adapterOne 940-16i SFF RAID adapterOne 940-16i SFF RAID adapterOne 940-16i SFF RAID adapter
OCP adapterOne Broadcom 5719 1GbE RJ45 4-port OCP Ethernet adapterOne Broadcom 5719 1GbE RJ45 4-port OCP Ethernet adapterOne Broadcom 5719 1GbE RJ45 4-port OCP Ethernet adapterOne Broadcom 5719 1GbE RJ45 4-port OCP Ethernet adapter
Power supply unitTwo 1100 W power supply unitsTwo 1100 W power supply unitsTwo 750 W power supply unitsTwo 1100 W power supply units
GPU adapterNoneNoneNoneOne NVIDIA® A2 GPU
Note

  • These sound power levels are measured in controlled acoustical environments according to procedures specified by ISO 7779 and are reported in accordance with ISO 9296.

  • The declared sound levels may change depending on configuration/conditions, for example, with high-power NICs, high-power processors and GPUs, such as ThinkSystem Mellanox ConnectX-6 HDR/200GbE QSFP56 1-port/2-port PCIe Adapter, ThinkSystem Broadcom 57454 10GBASE-T 4-port OCP module.

  • 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
The server is supported in the following environment:

  • Air temperature:

    • Operating:

      • ASHRAE class H1: 5–25°C (41–77°F); when the altitude exceeds 900 m (2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F) with every 500 m (984 ft) of altitude increase.

      • ASHRAE class A2: 10–35°C (50–95°F); when the altitude exceeds 900 m (2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F) with every 300 m (984 ft) of altitude increase.

      • ASHRAE class A3: 5–40°C (41–104°F); when the altitude exceeds 900 m (2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F) with every 175 m (574 ft) of altitude increase.

      • ASHRAE class A4: 5–45°C (41–113°F); when the altitude exceeds 900 m (2953 ft), the maximum ambient temperature value decreases by 1°C (1.8°F) with every 125 m (410 ft) of altitude increase.

    • Server off: 5–45°C (41–113°F)

    • Shipping or storage: -40–60°C (-40–140°F)

  • Maximum altitude: 3050 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 or storage: 8%–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.
Environment
ThinkSystem SR645 V3 complies with ASHRAE Class A2 specifications. System performance may be impacted when operating temperature is outside AHSARE A2 specification.
  • Air temperature:
    • Operating
      • ASHARE 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).
    • 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)
    • 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.

  • When the ambient temperature is greater than the supported maximum temperature (ASHARE A4 45°C), the server will shut down. The server will not power on again until the ambient temperature falls within the supported temperature range.

The server is designed for standard data center environment and is recommended to be placed in industrial data center. Depending on hardware configurations, the server complies with ASHRAE Class A2, A3, or A4 specifications with certain thermal restrictions. System performance may be impacted when operating temperature is out of permitted conditions.

For more information, refer to #server_specifications_environmental__restrictions.

Restrictions to ASHRAE support
Ambient temperature≤ 45°C≤ 40°C≤ 35°C≤ 30°C≤ 30°C
ProcessorTDP ≤ 200 W200 W ≤ TDP ≤ 240 WNote 1240 W ＜ TDP ≤ 300 W240 W ＜ TDP ≤ 300 WNote 2320 W ≤ TDP ≤ 400 W
Note
  1. In this scenario, the following requirements should also be met:

    • Installed with any 7mm boot drive

    • Installed with any M.2 NVMe drive

    • Installed with no less than four front 2.5'' hot-swap drives

  2. In this scenario, the following requirements should also be met:

    • AOC ≥ 100 GB

    • Installed with any rear 2.5-inch NVMe/SAS/SATA drive

    • Installed with any TruDDR5 memory DIMM (256 GB or above)

    • Installed with any passive GPU

Liquid to Air Module requirements

The restrictions to ASHRAE support are as follows (cooling by Liquid to Air Module (L2AM)):

  • The ambient temperature must be no more than 30 °C if the server meets the following requirements:

    • Two processors are installed.

    • AOC in Slot 1 ＜100 GB

Direct Water Cooling Module requirements

The restrictions to ASHRAE support are as follows (cooling by Direct Water Cooling Module (DWCM)):

  • If GPU is installed in the server, ThinkSystem 128GB TruDDR5 4800MHz (4Rx4) 3DS RDIMM-A v1 and ThinkSystem 256GB TruDDR5 4800MHz (8Rx4) 3DS RDIMM-A v1 is not supported.

  • The ambient temperature must be no more than 30 °C if the server meets the following requirements:

    • Two processors are installed.

    • The standard fan is installed.

    • AOC ≥ 100 GB

    • The standard fan must be installed in ThinkSystem 128GB TruDDR5 4800MHz (4Rx4) 3DS RDIMM-A v1 for the following backplanes:

      Note
      The quantity of front 2.5'' hot-swap drives should be no more than 8 pieces.

      • 4 x 3.5" backplane

      • 4 x 2.5" NVMe backplane

      • 4 x 2.5" AnyBay backplane

      • 4 x 2.5" SAS/SATA backplane

      • 8 x 2.5'' SAS/SATA backplane

      • 6 x 2.5'' SAS/SATA + 2 x 2.5'' AnyBay + 2 x 2.5'' NVMe backplane

      • 6 x 2.5'' SAS/SATA + 4 x 2.5'' AnyBay backplane

      • 10 x 2.5" AnyBay backplane (Gen 5)

      • 10 x 2.5" NVMe backplane (Gen 4)

      • 10 x 2.5" SAS/SATA backplane

      • 16-EDSFF drive backplane

    • The performance fan must be installed in ThinkSystem 256GB TruDDR5 4800MHz (8Rx4) 3DS RDIMM-A v1 for the following backplanes:

      • 4 x 3.5" backplane

      • 8 x 2.5'' SAS/SATA backplane

      • 6 x 2.5'' SAS/SATA + 2 x 2.5'' AnyBay + 2 x 2.5'' NVMe backplane

      • 6 x 2.5'' SAS/SATA + 4 x 2.5'' AnyBay backplane

      • 10 x 2.5" AnyBay backplane (Gen 5)

      • 10 x 2.5" NVMe backplane (Gen 4)

      • 10 x 2.5" SAS/SATA backplane

      • 16-EDSFF drive backplane

  • The ambient temperature must be no more than 35 °C if the server meets the following requirements:

    • Two processors are installed.

    • GPU ≤75W

    • AOC ≥ 100 GB

    • Qty. of front 2.5'' hot-swap drives ≤ 8

    • The performance fan must be installed in ThinkSystem 128GB TruDDR5 4800MHz (4Rx4) 3DS RDIMM-A v1 for the following backplanes:

      • 4 x 3.5" backplane

      • 8 x 2.5'' SAS/SATA backplane

      • 6 x 2.5'' SAS/SATA + 2 x 2.5'' AnyBay + 2 x 2.5'' NVMe backplane

      • 6 x 2.5'' SAS/SATA + 4 x 2.5'' AnyBay backplane

      • 10 x 2.5" AnyBay backplane (Gen 5)

      • 10 x 2.5" NVMe backplane (Gen 4)

      • 10 x 2.5" SAS/SATA backplane

      • 16-EDSFF drive backplane

    • The performance fan must be installed in ThinkSystem 256GB TruDDR5 4800MHz (8Rx4) 3DS RDIMM-A v1 for the following backplanes:

      Note
      The quantity of front 2.5'' hot-swap drives should be no more than 8 pieces.

      • 4 x 3.5" backplane

      • 8 x 2.5'' SAS/SATA backplane

      • 6 x 2.5'' SAS/SATA + 2 x 2.5'' AnyBay + 2 x 2.5'' NVMe backplane

      • 6 x 2.5'' SAS/SATA + 4 x 2.5'' AnyBay backplane

      • 10 x 2.5" AnyBay backplane (Gen 5)

      • 10 x 2.5" NVMe backplane (Gen 4)

      • 10 x 2.5" SAS/SATA backplane

      • 16-EDSFF drive backplane

Water requirements
ThinkSystem SR645 V3 is supported in the following environment:
Attention
The water required to initially fill the system side cooling loop must be reasonably clean, bacteria-free water (<100 CFU/ml) such as de-mineralized water, reverse osmosis water, de-ionized water, or distilled water. The water must be filtered with an in-line 50 micron filter (approximately 288 mesh). The water must be treated with anti-biological and anti-corrosion measures. Environment quality must be maintain over the lifetime of the system to receive warranty and support on affecting components. For more information please see Lenovo Neptune Direct Water-Cooling Standards.

  • Maximum pressure: 3 bars

  • Water inlet temperature and flow rates:
    Water inlet temperatureWater flow rate
    50°C (122°F)1.5 liters per minute (lpm) per server
    45°C (113°F)1 liter per minute (lpm) per server
    40°C (104°F) or lower0.5 liters per minute (lpm) per server
Note
The water required to initially fill the system side cooling loop must be reasonably clean, bacteria-free water (<100 CFU/ml) such as de-mineralized water, reverse osmosis water, de-ionized water, or distilled water. The water must be filtered with an in-line 50 micron filter (approximately 288 mesh). The water must be treated with anti-biological and anti-corrosion measures.
  • 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.
  • Water quality requirement