Dell POWEREDGE 1855 - Manual (Page 9)

Using USB Diskette or USB CD Drives
Each server module has a USB port on the front of the server module, which allows you to connect a custom cable for a diskette drive or USB CD drive. The
USB drives are used to configure the server module.
Hard-Drive Features
Each server module supports up to two hot-pluggable SCSI hard drives. If only one hard drive is used, a blank must be installed to maintain proper cooling.
See
Figure 1 -4 and Table 1 -3 for information on the hard-drive indicators. Different patterns are displayed as drive events occur in the system.
Figure 1-4. Hard-Drive Features and Indicators
Table 1-3. Hard-Drive Status Indicator Patterns
Back-Panel Features
The back of the chassis supports four I/O module bays, the DRAC/MC, fan modules, and power supply modules. Figure 1 -5 shows a sample configuration and
the numbering for the bays. Table 1 -4 provides information about the back-panel features.
Green blinking Gb Ethernet daughter card data transfers are in progress.
Network indicators Off Indicates that the server module does not have a link to the Ethernet switch or pass-through
module.
Green on Indicates that the server module has a valid link to the network switch module.
Green blinking Indicates network activity between the server module and the network switch module.
NOTE: External network activity is not reported by this indicator.
USB/video connector None Use the custom cable to connect external USB devices and video to the server module.
NOTICE: The system only supports USB 1.1 drives designated by Dell for use with your system. The drive must be horizontal and level to operate
properly.
NOTE: If the drive must be designated as the boot drive, enter the System Setup Program and set the drive as first in the boot sequence (see " Using
the System Setup Program "). Reset the power on the server module.
NOTE: Each server module must have a hard drive or a hard-drive blank installed in each hard-drive bay.
Indicator Activity Indicator Indicator Code
Off None Power is off to the server module. Both the activity and status indicators are off.
Activity Green Shows drive activity.
Status Amber The rebuild of the drive has stopped or the drive has an error. See your Installation and Troubleshooting Guide for more
information.
Amber, blinking
slowly Rebuilding of the drive is proceeding.
Amber, blinking
quickly Drive is being identified.