HP LH4r HP Netserver LH 3/LH 3r to LH 4/LH 4r - Page 30

Chapter 3 Installing LH 4 Components 3. As the CPU baseboard lowers into place, raise the levers into a vertical position. When the CPU baseboard seats in its slot, push the levers flat to lock the CPU baseboard into position. 4. Attach the two Torx thumbscrews to secure the CPU baseboard to the chassis, as shown in Figure 3-9. 5. Insert the new technical reference card in the sleeve on the inside of the NetServer cover, then replace the covers on the NetServer. Installing a Redundant Power Supply The LH 3/LH 3r runs on two power supply modules, and can accept a third to assure power continuity if a single power supply fails. The LH 4/LH 4r needs three power supply modules and can accept a fourth to assure power continuity if a single power supply fails. If your LH 3/LH 3r does not already have a second power supply cage and redundant power supply, install the Power Supply Upgrade Kit. If you require power supply redundancy, order a fourth power supply module. To install the power supply hardware, refer to the instructions supplied with the kits. Installing a Redundant Fan The Power Supply Upgrade Kit contains an extra fan to provide extra cooling and redundancy for power supply cooling. If you install the power supply upgrade, install the redundant fan according to the installation directions. Installing the LH 4r in the Rack If you removed the LH 3r to upgrade it, refer to the documentation listed below to install the LH 4r in the rack. For HP Racks Refer to the HP NetServer LH 3/LH 3r User Guide. For cabling instructions, refer to the documentation that came with the rack, and to the Rack Cabling Reference for the HP NetServer LH 3. For Non-HP (Compaq) Racks Refer to the HP NetServer LH 3 Non-HP Rack Installation Guide. For cabling instructions, refer to the documentation that came with the rack, and to the Rack Cabling Reference for the HP NetServer LH 3. 26