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
Ambient temperature management
Environment
Water requirements

Acoustical noise emissions

Table 1. Acoustic noise emissions declaration
Acoustic performance @ 25°C Ambient	Working mode	Configuration
Acoustic performance @ 25°C Ambient	Working mode	Typical	Storage-rich
Declared mean A-weighted sound power level, L_WA,m (B) Statistical adder for verification, Kv (B) = 0.4	Idle	6.5	6.5
	Operating mode 1	7.0	7.7
	Operating mode 2	7.7	8.3
Declared mean A-weighted emission sound pressure level, L_pA,m (dB) Bystander position	Idle	53	53
	Operating mode 1	57	65
	Operating mode 2	65	71

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% 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.
- Typical: 4x 270W CPU, 32x 64GB RDIMM, 8x SAS HDD, 1x RAID 545-8i, 1x Intel E610-T4 10GBASE-T 4-port OCP, 2x 2000W PSU
- Max: 4x 350W CPU, 64x 64GB RDIMM, 24x SAS HDD, 1x RAID 545-8i, 1x RAID 940-16i, 2x Intel E610-T4 10GBASE-T 4-port OCP, 2x 3200W PSU

Ambient temperature management
Adjust ambient temperature when specific components are installed.
Drives	Fan	Ambient temperature	Processor TDP	Supported components
8 x 2.5-inch drives	Single rotor	30°C or lower	270W or lower 2U standard	64 GB or lower memory module AOC cable Non-AOC cable
	Dual rotor	45°C or lower	270W or lower 2U standard	32 GB or lower memory module
		35°C or lower	270W or lower 2U standard	64 GB or lower memory module Non-AOC cable
		30°C or lower	350W or lower 2U standard and 2U performance	64 GB or lower memory module AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
	Dual rotor ultra	45°C or lower	270W or lower 2U standard	32 GB or lower memory module
		35°C or lower	350W or lower 2U standard and 2U performance	64 GB or lower memory module Non-AOC cable
		30°C or lower	350W or lower 2U standard and 2U performance	128 GB or lower memory module Rear M.2 AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
		25°C or lower	350W or lower 2U standard and 2U performance	256 GB or lower memory module Rear M.2 AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
24 x 2.5-inch drives	Single rotor	30°C or lower	270W or lower 2U standard	64 GB or lower memory module AOC cable Non-AOC cable Broadcom BCM57608 OCP
	Dual rotor	45°C or lower	270W or lower 2U standard	32 GB or lower memory module
		35°C or lower	270W or lower 2U standard	32 GB or lower memory module Non-AOC cable
		30°C or lower	350W or lower 2U standard and 2U performance	64 GB or lower memory module AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
	Dual rotor ultra	45°C or lower	270W or lower 2U standard	32 GB or lower memory module
		35°C or lower	350W or lower 2U standard and 2U performance	64 GB or lower memory module Non-AOC cable
		30°C or lower	350W or lower 2U standard and 2U performance	128 GB or lower memory module Rear M.2 AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
		25°C or lower	350W or lower 2U standard and 2U performance	256 GB or lower Rear M.2 AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
24 x E3.S 1T drives	Dual rotor ultra	30°C or lower	350W or lower 2U standard and 2U performance	128 GB or lower memory module Rear M.2 AOC cable Non-AOC cable SW GPU Broadcom BCM57608 OCP
8 x 2.5-inch drives or 8 x E3.S 1T drives	Dual rotor or Dual rotor ultra	25°C or lower	210W or lower 2U standard and 1U standard	256 GB or lower AOC cable Non-AOC cable DW GPU Broadcom BCM57608 OCP

Environment
ThinkSystem SR850 V4 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, ThinkSystem SR850 V4 server 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 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% to 80%; maximum dew point: 17°C (62.6°F) 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.

Environment

ThinkSystem SR850 V4 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, ThinkSystem SR850 V4 server 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 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% to 80%; maximum dew point: 17°C (62.6°F)
  - 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.

Water requirements

ThinkSystem SR850 V4 is supported in the following environment:

Maximum pressure: 3 bars
Water inlet temperature and flow rates:
- For servers with Processor Neptune^® Core Module (NeptCore), the water inlet temperature and water flow rate can be as follows:
  Water inlet temperature Water 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 lower 0.5 liters per minute (lpm) per server

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 maintained over the lifetime of the system to receive warranty and support on affecting components. For more information, see Lenovo Neptune Direct Water-Cooling Standards.

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