Rorke Data The Galaxy 65 Especificações descarregar pdf (Página 25)

Chapter 1: Introduction

Subsystem Components

1-13

PSU specifications are shown in Appendix B.

1.2.6 Single-fan Cooling Modules

Part Number: GALHDX-9272CfanModE

The SATA-based Galaxy subsystems are equipped with two (for the 8-bay model) or

three (for the 12-bay model), 1U single-fan, redundant, hot-swappable cooling modules

shown in Figure 1-18. One 9.7cm fan is housed in each cooling module. These modules

have been designed to generate a cooling flow from the front to the rear of the subsystem

to extract the heat generated by the SATA hard drives. Two of the cooling modules are

installed directly beneath the PSUs. For the 12-bay subsystem, a third module is located

directly beneath the controller module.

Figure 1-18: Top View of a Single-fan Cooling Module

Advanced Fault-Preventative Operation

The cooling modules support dual-speed operation modes that help to protect the

subsystem in the event of component failure or extreme working conditions.

Intelligent Dual Speed Operation

The cooling fans operate with two rotation speeds. Under normal operating conditions,

the cooling fans run at the low speed, which is sufficient for maintaining efficient airflow

across components. Under the following conditions, cooling fans raise their rotation

speed to increase the airflow:

1. Component Failure: if another cooling module, a PSU, or a temperature sensor

fails, the remaining cooling fan(s) automatically raises its rotation speed.

2. Elevated Temperature: if the temperature breaches the upper threshold set for any

of the interior temperature sensors, the cooling fans automatically raises its

rotation speed.

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Rorke Data The Galaxy 65 Especificações Página 25