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ASHRAE class compliance information

Your server complies with ASHRAE class A2 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification.

  • Air temperature:

    • Operating:

      • 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 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)

    • Shipping or storage: 8%–90%

Depending on the hardware configuration, some server models comply with ASHRAE class A3 and class A4 specifications. To comply with ASHRAE class A3 and class A4 specifications, the server model must meet the following requirements at the same time:

  • No NVMe drive, M.2 drive, middle bay, rear bay, GPU adapter, Ethernet adapter of 10 GbE or higher, or PCIe SSD adapter is installed.

  • Required processor TDP for supported server models:

    • TDP ≤ 120 watts for server model with 24 x 2.5-inch front drive bays

    • TDP ≤ 155 watts for server model with 8 x 3.5-inch, 8 x 2.5-inch, or 16 x 2.5-inch front drive bays