Dell PowerEdge 2650 - Manual (Page 49)

SCSI Backplane Daughter Card
To operate the SCSI backplane in a split backplane configuration, you must install a daughter card. In a split backplane configuration, the five hard-drive bays
are arranged in one group of two drives and another group of three drives. This configuration is referred to as a 2/3 split backplane configuration.
Installing the SCSI Backplane Daughter Card
1. Unpack the SCSI backplane board daughter card kit.
2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
3. Remove the cover (see " Removing the Cover ").
4. The daughter card fits between the sides of the card guide above the drive bay. To install the daughter card in the card guide, performing the following
steps:
a. Hold the daughter card by its edges with the component side facing up and the card connector facing the SCSI backplane board (see Figure 4 -
23 ).
b. Ensure that the retention lever is in the open position.
c. Position the card in the drive bay so that the notches on the left and right edges of the card are aligned with the tabs on the card guide above
the drive bay.
d. Lower the card into the card guide.
e. Close the retention lever to slide the daughter card into the SCSI backplane connector and lock the card into place (see Figure 4 -23 ).
Figure 4-23. Installing a SCSI Backplane Daughter Card
5. Reconfigure the SCSI cable connections to the SCSI backplane as necessary to operate the backplane as a 2/3 split backplane:
l If a RAID controller card is not installed, no cables are required to use either the onboard SCSI controller or optional integrated RAID controller in
either a 1 x 5 or 2/3 split configuration.
l If a RAID controller card is installed, cables can be connected from the controller card to SCSIA and/or SCSIB backplane board connector(s). A
backplane board connector that is not attached to the RAID controller card will use the onboard SCSI controller or optional integrated RAID
controller.
l If a cable is connected to the SCSIB backplane board connector, the SCSI backplane daughter card must be installed to activate the 2/3 split
configuration. Otherwise, the system will display an error message.
See Figure 5 -5 to locate the connectors on the SCSI backplane board.
6. Replace the cover (see " Removing the Cover ").
7. Reconnect your system and peripherals to their electrical outlets, and turn on the system.
Removing the SCSI Backplane Daughter Card
CAUTION: Before you perform this procedure, read the safety instructions in your System Information document.
CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions in your System Information document.
NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the SCSI configuration.
CAUTION: Before you perform this procedure, read the safety instructions in your System Information document.