Installing a memory module

The following procedure is for a Tier 1 customer replaceable unit (CRU). Replacement of Tier 1 CRUs is your responsibility. If IBM installs a Tier 1 CRU at your request, you will be charged for the installation. Service agreements can be purchased so that you can ask IBM to replace these units.

About this task

See Figure 1 for the locations of the DIMM connectors on the system board.

Figure 1. Locations of the DIMM connectors on the system board

To install a DIMM, complete the following procedure.

See Table 1 for a listing of the eight DIMM slots populated with the memory RDIMM.

Table 1. DIMM slots populated with the memory RDIMM

Processor	Memory Channel	DIMM Slot Number
1	0	1 - 16GB RDIMM
		2 - 2GB RDIMM
	1	4 - 16GB RDIMM
		5 - 2GB RDIMM
	2	12 - 16GB RDIMM
		11 - 2GB RDIMM
	3	9 - 16GB RDIMM
		8 - 2GB RDIMM
2	0	13 - 16GB RDIMM
		14 - 2GB RDIMM
	1	16 - 16GB RDIMM
		17 - 2GB RDIMM
	2	24 - 16GB RDIMM
		23 - 2GB RDIMM
	3	21 - 16GB RDIMM
		20 - 2GB RDIMM

Note: Do not put any DIMM into DIMM slots 3, 6, 7, 10, or slots 13 to 24.

1. Remove the air baffle over the DIMMs (see Removing the air baffle).
2. Open the retaining clip on each end of the DIMM connector.
   Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently.
3. Touch the static-protective package that contains the DIMM to any unpainted metal surface on the file module, and then remove the DIMM from the package.
4. Turn the DIMM so that the DIMM keys align correctly with the connector.
5. Insert the DIMM into the connector by aligning the edges of the DIMM with the slots at the ends of the DIMM connector. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. The retaining clips snap into the locked position when the DIMM is firmly seated in the connector.
   Attention: If there is a gap between the DIMM and the retaining clips, the DIMM has not been correctly inserted; open the retaining clips, remove the DIMM, and then reinsert it.
6. Repeat steps 1 through 5 until all the new or replacement DIMMs are installed.
7. Replace the air baffle over the DIMMs (see Installing the air baffle), making sure all cables are out of the way.
8. Install the cover (see Installing the cover).
9. Slide the file module into the rack.
10. Follow the steps at the end of the procedure Removing a file module and disconnecting power to reconnect the file module and resume its use in the cluster.
11. Go to the management GUI and look for any unfixed events related to DIMMs.