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NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the SCSI configuration. 5. Reconfigure the SCSI cable connections to the SCSI backplane as necessary to operate the backplane as a 2 x 3 split backplane: An integrated RAID controller card is installed by default. no cables are required to use the integrated RAID controller in either the 1 x 5 or 2 x 3 split configuration. See Figure 5-4 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 1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2. Pull the retention lever to slide the daughter card away from the SCSI backplane connector (see Figure 4-27). 3. Lift the card up and away from the tabs on the card guide above the drive bay (see Figure 4-27). SCSI Backplane Board The system contains up to six 1-inch SCSI hard drives that connect to a controller on the system board or a RAID controller card through the SCSI backplane board. Removing the SCSI Backplane Board 1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2. Remove the cover (see "Removing the Cover"). 3. Remove the SCSI backplane daughter card if it is installed (see "Removing the SCSI Backplane Daughter Card"). 4. Remove all hard drives (see "Removing a Hard Drive"). 5. Disconnect the front fan assembly power cable from its P1 connector on the front of the SCSI backplane board. 6. Disconnect the SCSI_A connector from the SCSI_A connector on the back of the SCSI backplane board (see Figure 4-28). 7. Pull the locking bar to the unlock position to remove the flat cable connector (BKPLN) from the PLANAR CONNECTOR on the back of the SCSI backplane board (see Figure 4-28). 8. Disconnect the 14-conductor power cable from the SCSI BACKPLANE POWER connector on the back of the SCSI backplane board (see Figure 4-28). 9. Disconnect the 4-conductor power cable from the 1 x 2 SCSI POWER connector on the back of the SCSI backplane board (see Figure 4-28). 10. Loosen the thumbscrew that secures the SCSI backplane board in the system (see Figure 4-28). 11. Slide the backplane board up about 0.5 inch. 12. Pull the backplane board off of its grounding tabs. 13. Lift the backplane board out of the system (see Figure 4-28). CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. NOTICE: To avoid possible data loss, back up all data on the hard drives before changing the SCSI configuration. CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. Figure 4-28. Removing and Replacing the SCSI Backplane Board Replacing the SCSI Backplane Board 1. Lower the backplane board into the system. 2. Align the backplane board onto the board's grounding tabs. 3. Slide the backplane board down about 0.5 inch. 4. Tighten the thumbscrew on the backplane board. 5. Install all SCSI hard drives (see "Installing a Hard Drive"). 6. Install the SCSI backplane daughter card (see "Installing the SCSI Backplane Daughter Card"). 7. Insert the SCSI_A cable into the SCSI_A connector on the back of the SCSI backplane board (see Figure 4-28). 8. Pull the locking bar to the unlock position to insert the flat cable connector (BKPLN) into the PLANAR CONNECTOR on the back of the SCSI backplane board; next, push the locking bar to lock the flat cable into the connector (see Figure 4-28). 9. Insert the 14-conductor power cable into the SCSI BACKPLANE POWER connector on the back of the SCSI backplane board (see Figure 4-28). 10. Insert the 4-conductor power cable into the 1 x 2 POWER connector on the back of the SCSI backplane board (see Figure 4-28). 11. Insert the front fan cable into the P1 connector on the front of the SCSI backplane board. 12. Replace the cover (see "Replacing the Cover"). 13. Reconnect your system and peripherals to their electrical outlets, and turn on the system. Memory Modules The six memory module connectors on the system board can accommodate a minimum of 256 MB of registered memory modules. The memory module connectors are arranged in pairs which consist of three banks (bank 1, bank 2, and bank 3). Memory Upgrade Kits The system is upgradable by installing combinations of 128-, 256-, 512-MB, or 1-GB registered DDR SDRAM modules. You can purchase memory upgrade kits as needed. CAUTION: Only trained service techn...