Table 5. Online-spare mode memory installation sequence (in pairs)Number of microprocessors DIMM connectors2 1, 2, 9, 10, 3, 4, 11, 12, 5, 6, 13, 14, 7, 8,15, 164 1, 2, 9, 10, 17, 18, 25, 26, 3, 4, 11, 12, 19,20, 27, 28, 5, 6, 13, 14, 21, 22, 29, 30, 7, 8,15, 16, 23, 24, 31, 32Installing a memory moduleTo install a DIMM, complete the following steps:1. Read the safety information that begins on page v and “Installation guidelines”on page 28.2. Turn off the server and peripheral devices, and disconnect the power cords andall external cables.3. Remove the cover (see “Removing the top cover” on page 37).4. Remove the air baffle (see “Removing the air baffle” on page 39).5. Open the retaining clips on each end of the DIMM connector.DIMMRetainingclip6. Touch the static-protective package that contains the DIMM to any unpaintedmetal surface on the server. Then, remove the DIMM from the package.7. Turn the DIMM so that the DIMM keys align correctly with the slot.8. Insert the DIMM into the connector by aligning the edges of the DIMM with theslots at the ends of the DIMM connector. Firmly press the DIMM straight downinto the connector by applying pressure on both ends of the DIMMsimultaneously. The retaining clips snap into the locked position when the DIMMis seated in the connector.Note: If there is a gap between the DIMM and the retaining clips, the DIMMhas not been correctly inserted; open the retaining clips, remove the DIMM, andthen reinsert it.If you have other devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 68.Chapter 2. Installing optional devices 63
