321 Studios GHDX2-2430S-24F4D manual Power Supply Safety Restrictions, PSU Module

Chapter 1: Introduction

Figure 1-11: PSU Module

Each PSU module comes with a power socket for power cord plug-in. All three power supplies are turned on and off using a single power switch on the enclosure chassis. Each PSU also comes with two (2) embedded cooling fans to provide sufficient airflow across its heat-generating components and one (1) LED to indicate the PSU status. An extraction handle makes it easier to install or remove the PSU from the subsystem. While a PSU may be removed when the system is still online, this should only be done if the PSU has failed and needs to be replaced.

A retention screw through the extraction handle secures the PSU to the chassis. If the PSU needs to be removed, the retention screw must be removed first. After installing a new PSU module, make sure that the retention screw has been firmly secured. The shipping package contains adjustable cable clamps that can be used to secure power cord connections.

PSU specifications are shown in Appendix A.

Power Supply Safety Restrictions

No. of Failed PSUs	Responses and Preventive Actions
	1.	Warning messages are issued.
	2.	Cached data is flushed to the hard drives (also depends on
1		the Event Triggered configuration settings of the
		firmware).
	3.	If previously configured to the Write-back mode, the
		caching mode is automatically switched to the
		conservative Write-through mode.

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