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Site Planning Guide

OceanStor Dorado18000 V3 V300R002

This document describes the division of responsibilities between Huawei and customers during the deployment of the Dorado18000 V3 storage system and the tasks that need to be completed before the installation.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Heat Dissipation and Noise

Heat Dissipation and Noise

A storage system can run steadily using the heat dissipation system carried in its own fan modules. An external device is necessary to remove the hot air discharged from a storage system into the equipment room to ensure proper air circulation.

Heat Dissipation

The heat dissipation modes are as follows:

  • Controller enclosure

    Cooling air enters from the front end through small holes on the interface modules. After dissipating the heat of interface modules, controllers, and power modules, the air is discharged out of its back end by fans. The controller enclosure dynamically adjusts rotational speed of the fans based on the operational temperature of the storage system.

  • Disk enclosure

    Cooling air enters from the front end through the space between disks, passing the midplane, into the power modules and expansion modules. After dissipating the heat, the air is discharged out of its back end by fans. The disk enclosure dynamically adjusts rotational speed of the fans based on the operational temperature of the storage system.

For better maintenance, ventilation, and heat dissipation, pay attention to the following when installing the storage system in the cabinet:

  • To ensure smooth ventilation, the cabinet should be at least 100 cm (39.4 inches) away from the equipment room walls and at least 120 cm (47.24 inches) away from other cabinets (that are in front of or behind).
  • To keep air convection between the cabinet and the equipment room, no enclosed space is allowed in the cabinet. 1 U (44.45 mm, 1.75 inches) space should be left above and below each device.

The airflow parameters of the storage system are listed in Table 2-7.

Table 2-7 Airflow parameters

Component

Dorado18000 V3

Dorado18000 V3 (NVMe)b

Controller enclosure

  • 808 CFM (maximum fan speed)
  • 204 CFM (25°C)

2 U SAS disk enclosure

  • 117 CFM (maximum fan speed)
  • 38 CFM (25°C)

-

2 U NVMe disk enclosure (only supported in V300R002C10 and later)

  • 115 CFM (maximum fan speed)
  • 35 CFM (25°C)

Dorado NAS unit (only supported in V300R002C10 and later)

  • 183 CFM (maximum fan speed)
  • 83 CFM (25°C)

a: Cubic Feet per Minute (CFM)

b: Dorado18000 V3 (NVMe) is available in V300R002C10 and later versions.

The heat dissipation parameters of the storage system are listed in Table 2-8.

Table 2-8 Heat dissipation parameters

Parameter

Dorado18000 V3

Dorado18000 V3 (NVMe)a

Heat dissipation (system bay)

27027.66 BTU/H

22564 BTU/H

Heat dissipation airflow (system bay)

  • Typical: 821 CFM
  • Max: 2680 CFM
  • Typical: 484 CFM
  • Max: 1728 CFM

a: Dorado18000 V3 (NVMe) is available in V300R002C10 and later versions.

Noise

The disks and fans make noise when in operation, with fans being the major noise source. The intensity of fan rotation is associated with the temperature. A higher temperature leads to greater rotational speed by the fans, which in return creates greater noise. Therefore, there is a direct correlation between the noise made by a storage system and the ambient temperature in the equipment room.

When the temperature is 25°C, the parameters of the noise generated by the storage system are listed in Table 2-9.

Table 2-9 Noise parameters

Parameter

Value

Operating noise

73.4 dB (A)

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Updated: 2019-07-17

Document ID: EDOC1100049134

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