Dell SC400, SC420, and SC420F Expansion Enclosure Owner's Manual

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SC400 Series Expansion Enclosure Front-Panel Features and Indicators

The front panel shows the expansion enclosure status and power supply status.

Figure 1. SC400 Front-Panel Features and Indicators Front panel features and indicators.

Figure 2. SC420and SC420F Front-Panel Features and Indicators Front panel features and indicators.

Features and indicators on the front of the SC400 series expansion enclosure .

Item	Name	Description
1	System identification button	The system identification button on the front control panel can be used to locate a particular expansion enclosure within a rack. When the button is pressed, the system status indicators on the control panel and the Enclosure Management Module (EMM) blink blue until the button is pressed again.
2	Power LED	The power LED lights when at least one power supply unit is supplying power to the expansion enclosure.
3	Expansion enclosure status LED	The expansion enclosure status LED lights when the expansion enclosure power is on. Solid blue during normal operation. Blinks blue when a host server is identifying the expansion enclosure or when the system identification button is pressed. Blinks amber or remains solid amber for a few seconds and then turns off when the EMMs are starting or resetting. Blinks amber for an extended time when the expansion enclosure is in a warning state. Remains solid amber when the expansion enclosure is in the fault state.
4	Hard disk drives	SC400 – Up to 12 3.5-inch SAS hot-swappable hard disk drives. SC420 – Up to 24 2.5-inch SAS hot-swappable hard disk drives. SC420F – Up to 24 2.5-inch SAS hot-swappable SSDs.