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.

Acoustical noise emissions

Acoustical noise emissions
Acoustic Performance @ 25°C Ambient		Typical	Max
Declared mean A-weighted sound power level, LWA,m(B) Statistical adder for verification, Kv (B) = 0.4	Idle	6.9	7.3
	Operating 1	6.9	7.4
	Operating 2	7.0	8.6
Declared mean A-weighted emission sound pressure level, LpA,m(dB)	Idle	55.9	60.2
	Operating 1	55.9	61.6
	Operating 2	56.6	73.4
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 50% of CPU TDP. Operating Mode 2 is 100% of CPU TDP. The declared acoustic sound levels are based on the below-specified configurations with four nodes installed in the chassis, which may change depending on configuration/conditions. Typical: four 205-watt processors, thirty-two 64GB 6400 RDIMMs, four U.2 NVMe SSDs, four 10GB PCIe adapters, and two 2000-watt PSUs Maximum: four 350-watt processors, thirty-two 64GB 6400 RDIMMs, twenty-four U.2 NVMe SSDs, four 1GB OCP modules, four GPU adapters, and three 2700-watt PSUs 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

Ambient temperature management
Adjust ambient temperature when specific components are installed. Note To avoid throttling, make sure to adopt passive Direct Attach cables when network adapters with 100GbE or higher speed are installed. If PCIe adapter with up to 2 ports is installed, the configuration only supports OCP module with up to 4 ports. If PCIe adapter with up to 4 ports is installed, the configuration only supports OCP module with up to 2 ports.
Keep the ambient temperature to 35°C or lower with the following system configuration:
Processor	Heat sink and Fan	Storage configuration	Slot capability	Memory capability
205W to 250W	Performance heat sink Ultra fans	One front IO board (no 2.5-inch drives) Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
200W	Standard heat sink High performance or ultra fans	One front IO board (no 2.5-inch drives) Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
Keep the ambient temperature to 30°C or lower with the following system configuration:
Processor	Heat sink and Fan	Storage configuration	Slot capability	Memory capability
205W to 250W	Performance heat sink Ultra fans	Six 2.5-inch drives Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
205W to 250W	Performance heat sink High performance or ultra fans	Two 2.5-inch drives Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
200W	Standard heat sink High performance or ultra fans	Two 2.5-inch drives Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
205W to 250W	Performance heat sink High performance fans	One front IO board (no 2.5-inch drives) Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
270W to 350W	Performance heat sink Ultra fans	One front IO board (no 2.5-inch drives) Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
Keep the ambient temperature to 25°C or lower with the following system configuration:
Processor	Heat sink and Fan	Storage configuration	Slot capability	Memory capability
270W to 350W	Performance heat sink Ultra fans	Six 2.5-inch drives Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
205W to 250W	Performance heat sink High performance or ultra fans
200W	Standard heat sink High performance or ultra fans
270W to 350W	Performance heat sink High performance or ultra fans	Two 2.5-inch drives Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)
270W to 350W	Performance heat sink High performance fans	One front IO board (no 2.5-inch drives) Two M.2 boot drives	One PCIe or GPU adapter One OCP module	64GB (6400MHz)

Environment

Environment
ThinkSystem SD520 V4 complies with ASHRAE Class A2 specifications. System performance may be impacted when operating temperature is outside AHSRAE A2 specification. Depending on the hardware configuration, SD520 V4 also complies with ASHRAE Class H1 specification. System performance may be impacted when operating temperature is outside ASHRAE H1 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 H1: 5°C to 25°C (41°F to 77°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) ASHRAE Class H1: 8% to 80%; maximum dew point: 17°C (62.6°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.

ThinkSystem SD520 V4 complies with ASHRAE Class A2 specifications. System performance may be impacted when operating temperature is outside AHSRAE A2 specification.

Depending on the hardware configuration, SD520 V4 also complies with ASHRAE Class H1 specification. System performance may be impacted when operating temperature is outside ASHRAE H1 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 H1: 5°C to 25°C (41°F to 77°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)
  - ASHRAE Class H1: 8% to 80%; maximum dew point: 17°C (62.6°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.

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Environmental specifications

Acoustical noise emissions​

Ambient temperature management​

Environment​

Acoustical noise emissions

Ambient temperature management

Environment