6-2 Dell PowerEdge 4100/180 and 4100/200 Systems User’s GuideFigure 6-1 illustrates the internal drive bays and SCSIbackplane.Figure 6-1. Internal Drive HardwareInstalling SCSI Hard-Disk Drivesin the Internal Drive BaysSCSI hard-disk drives are supplied by Dell in specialdrive carriers that fit into the internal drive bays (see Fig-ure 6-2). The circuit board at the back of the drive carrieracts as an interface between the SCSI hard-disk drive andthe SCSI backplane boardNOTE: Dell recommends that you use only drives thatDell has tested and approved for use with the SCSI back-plane board.SCSI Hard-Disk Drive ConfigurationThe SCSI backplane board provides termination for theSCSI bus. None of the drives connected to the SCSIbackplane board should have their termination enabled.All SCSI ID numbers for the drives are set by the SCSIbackplane board.Ultra/Wide SCSIhost adapterconnector (SCSI)SCSI hard-disk drivebays (6)SCSI backplaneUltra/Wide SCSIinterface cablesystem board
