HP ProLiant DL360 Gen9 Server

Extended Ambient Temperature Guidelines

ASHRAE standards

The American Society of Heating Refrigeration and Air-Conditioning Engineers set standards for building systems, energy efficiency, indoor air quality, refrigeration and sustainability. The ASHRAE A3 and A4 classes are the latest classes that have been defined in an effort to support the Fresh Air Data cooling initiative. HP Extended Ambient Operating Support is defined below as comparable to an ASHRAE class.

The following table provides a summary of environmental ranges supported, with altitude de-ratings, by HP ProLiant servers. Items in bold are HP ProLiant features that exceed the ASHRAE comparable class feature set.

HP Ambient Support Specification

Dry bulb temp range (°C)

Relative humidity range (% RH)

Dew point limits (°C)

Maximum altitude

Altitude de-rating*

HP Standard Operating Support

10°C to 35°C (50°F to 95°F)

8% to 90%

-12°C (min) to 24°C (max)

3050 meters

1.0°C/305m above sea level

HP Extended Ambient 40°C Operating Support (ASHRAE Class A3 compliant)

5°C to 40°C (41°F to 104°F)

8% to 90%

-12°C (min) to 24°C (max)

3050 meters

1.0°C/175m above 900m

HP Extended Ambient 45°C Operating Support (ASHRAE Class A4 compliant)

5°C to 45°C (41°F to 113°F)

8% to 90%

-12°C (min) to 24°C (max)

3050 meters

1.0°C/125m above 900m

* Altitude de-rating assumes no direct sustained sunlight.

The maximum rate of change for Inlet Ambient temperature is 20°C/hr (36°F/hr). The upper limit and rate of change can be limited by the type and number of options installed.

Supported HP ProLiant DL360 Gen9 Server configurations

HP ProLiant DL360 Gen9 Server chassis form factor

HP Standard Operating Support

HP Extended Ambient 40°C Operating Support (ASHRAE Class A3 compliant)

HP Extended Ambient 45°C Operating Support (ASHRAE Class A4 compliant)

4 LFF

8 SFF

The standard performance fan supports all SKUs except those with 160W processors, 10 SFF drives, and 32 GB LR DIMMs. These SKUs require the High Performance Fan Kit.

Requires the High Performance Fan Kit for all configurations.

Options not supported:

  • 130W+ processors
  • LRDIMMs
  • GPUs
  • 10Gb 533FLR-T FlexibleLOM
  • 2 SFF drive kit

Requires the High Performance Fan Kit for all configurations.

Options not supported:

  • 130W+ processors
  • LRDIMMs
  • GPUs
  • 10Gb 533FLR-T FlexibleLOM
  • 2 SFF drive kit

For more information about configuration rules and requirements, see the HP ProLiant DL360 Gen9 Server documentation on the HP website.

For information on configuring extended ambient temperature mode using the UEFI System Utilities, see the HP UEFI System Utilities User Guide for HP ProLiant Gen9 Servers User Guide on the HP website.

For safety, environmental, and regulatory information, see Safety and Compliance Information for Server, Storage, Power, Networking, and Rack Products, available at the HP website.

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Part number: 796925-001
September 2014
Edition: 1