Dell PowerEdge 1850 - Manual (Page 14)

Figure 2-3. NIC Connector Release Latch
SCSI Hard-Drive Indicator Codes
If RAID is activated, two indicators on each of the hard-drive carriers provide information on the status of the SCSI hard drives. RAID can be enabled either by
using ROMB on the optional riser card (when available) or by using a RAID expansion card connected to the backplane. See
Figure 2 -4 and Table 2 -3 . The
SCSI backplane firmware controls the drive power -on/fault indicator.
Figure 2-4. SCSI Hard-Drive Indicators
Table 2 -3 lists the drive indicator patterns. Different patterns are displayed as drive events occur in the system. For example, if a hard-drive fails, the "drive
failed" pattern appears. After the drive is selected for removal, the "drive being prepared for removal" pattern appears, followed by the "drive ready for
insertion or removal" pattern. After the replacement drive is installed, the "drive being prepared for operation" pattern appears, followed by the "drive online"
NOTE: To disconnect a network cable from the NIC, press the release latch located above the connector. See Figure 2 -3 . To facilitate installation of
network cables with hooded connectors, use the RJ-45 extension cable provided with your system.