D-Link DSN-4200 Hardware Reference Guide for DSN-4000 - Page 12

2.1 Front Panel Components The front of the DSN-4X00 primary array enclosure has the following components (see Figure 2-1): Enclosure Status LEDs - the enclosure LEDs at the right side of the front panel provide status information about the DSN-4X00i primary array enclosure, as shown in Figure 2-1. For a description of these LEDs, see Table 2-1. Drive Slots - the front panel provides access to 16 drive slots (depending on your specific model), as shown in Figure 2-4. Drive Carriers - hard disk drives are mounted on a drive carrier for easy insertion or removal. The drive carriers have a squeeze lever for installing and removing drives, and two status LEDs (see Figure 2-3 and Table 2-2). Each drive carrier has a corresponding drive slot number (see Figure 2-4). Drive carriers must be installed in all drive slots that are not occupied by a hard disk drive to maintain proper air flow for cooling the system. Drive Carrier (see Figure 2-3 for detailed view) Drive Carriers Figure 2-1. Front View of the DSN-4X00 Primary Array Enclosure LEDs (see Figure 2-2 and Table 2-1 for detailed information) Figure 2-2. Detailed View of Enclosure LEDs 4 Chapter 2 VessRAID 1836i/1846i Series Primary Array Layout