Environmental Specifications

Atlas 800 Inference Server User Guide (Model 3000) 14

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Table 3-2 Environmental specifications

Item	Specifications
Temperature	Operating temperature: 5°C to 40°C (41°F to 104°F) (ASHRAE Classes A2 and A3 compliant) Storage temperature (within 3 months): –30°C to +60°C (–22°F to +140°F) Storage temperature (within 6 months): –15°C to +45°C (5°F to 113°F) Storage temperature (within 1 year): –10°C to +35°C (14°F to 95°F) Maximum temperature change rate: 20°C (36°F) per hour, 5°C (9°F) per 15 minutes NOTE: The highest operating temperature varies depending on the configuration. For details, see Table 3-3.
Relative humidity (RH, non-condensing)	Operating humidity: 8% to 90% Storage humidity (within 3 months): 8% to 85% Storage humidity (within 6 months): 8% to 80% Storage humidity (within 1 year): 20% to 75% Maximum change rate: 20%/h
Air volume	≥ 204 CFM
Maximum altitude	≤ 3,050 m (10,006.56 ft) NOTE: ASHRAE 2015 compliant: ASHRAE Class A1 and A2 compliant: For altitudes above 900 m (2952.72 ft.), the highest operating temperature decreases by 1°C (1.8°F) for every increase of 300 m (984.24 ft.) in altitude. ASHRAE Class A3 compliant: For altitudes above 900 m (2952.72 ft.), the highest operating temperature decreases by 1°C (1.8°F) for every increase of 175 m (574.15 ft.) in altitude. ASHRAE Class A4 compliant: For altitudes above 900 m (2952.72 ft.), the highest operating temperature decreases by 1°C (1.8°F) for every increase of 125 m (410.10 ft.) in altitude.
Corrosive gaseous contaminant	Maximum corrosion product thickness growth rate: Copper corrosion rate test: 300 Å/month (meeting level G1 requirements of the ANSI/ISA-71.04-2013 standard on gaseous corrosion) Silver corrosion rate test: 200 Å/month
Particle contaminant	The equipment room environment meets the requirements of ISO 14664-1 Class 8. There is no explosive, conductive, magnetic, or corrosive dust in the equipment room. NOTE: It is recommended that the particulate pollutants in the equipment room be monitored by a professional organization.
Acoustic noise	The declared A-weighted sound power levels (LWAd) and declared average bystander position A-weighted sound pressure levels (LpAm) listed are measured at 23°C (73.4°F) in accordance with ISO 7779 (ECMA 74) and declared in accordance with ISO 9296 (ECMA 109). Idle: LWAd: 5.64 Bels LpAm: 41 dBA Operating: LWAd: 6.24 Bels LpAm: 46.6 dBA NOTE: Actual sound levels generated during operation vary depending on server configuration, load, and ambient temperature.

Table 3-3 Operating temperature limitations

Model	Max. 30°C (86°F)	Max. 35°C (95°F) (ASHRAE Class A2 Compliant)	Max. 40°C (104°F) (ASHRAE Class A3 Compliant)
12 x 3.5-inch drive EXP configuration	Does not support Atlas 300T training card (model 9000) and Atlas 300T Pro training card (model 9000).	Does not support Atlas 300T training card (model 9000) and Atlas 300T Pro training card (model 9000).	Does not support 64-core CPUs. Does not support PCIe SSD cards. Does not support AI accelerator cards. Does not support rear drives.
12 x 3.5-inch drive pass-through configuration
25 x 2.5-inch drive EXP configuration
24 x 2.5-inch drive pass-through configuration
8 x 2.5-inch SAS/SATA + 12 x 2.5-inch NVMe drive configuration	Does not support Atlas 300T training card (model 9000) and Atlas 300T Pro training card (model 9000).	Does not support Atlas 300T training card (model 9000) and Atlas 300T Pro training card (model 9000).	Not supported
8 x 2.5-inch drive configuration	Supports all configurations.	Does not support Atlas 300T training card (model 9000) and Atlas 300T Pro training card (model 9000).	Does not support AI accelerator cards.
NOTE: When a single fan fails, the highest operating temperature is 5°C (9°F) lower than the rated value. When powered by Kunpeng 920 5220 or 3210 processors, the server does not support 24 x 2.5-inch SAS/SATA pass-through drive configuration.

SSDs and HDDs (including NL-SAS, SAS, and SATA) cannot be preserved for a long time in the power-off state. Data may be lost or faults may occur if the preservation duration exceeds the specified maximum duration. When drives are preserved under the specified storage temperature and humidity, the following preservation time is recommended:

Maximum preservation duration of SSDs:
- 12 months in power-off state without data stored
- 3 months in power-off state with data stored
Maximum preservation duration of HDDs:
- 6 months in unpacked/packed and powered-off state
The maximum preservation duration is determined according to the preservation specifications provided by drive vendors. For details, see the manuals provided by drive vendors.

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Updated: 2023-01-31

Document ID: EDOC1100114905

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