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4. Prepare the new memory card:
a. Touch the static-protective package that contains the memory card to any
unpainted surface on the outside of the server; then, remove the memory
card from the package.
b. Place the memory card on a flat, static-protected surface with the DIMM
connectors facing up.
c. Install memory DIMMs in the memory card (see “Installing DIMMs”).
5. Remove the memory card from the server:
Attention: When moving the memory card, do not allow it to touch any
components or structures inside the server.
a. Make sure that the retention levers on the edge of the memory card are fully
open.
b. Lift the memory card out of the server.
6.
Replace the memory card:
a. Grasp the new memory card by the retention levers and turn the memory
card so that the connector aligns with the connector on the microprocessor
board.
b. Insert the memory card into the memory card connector.
c. Press the memory card into the connector and close the small retention
lever.
d. Wait two seconds and close the large retention lever.
If you have other options to install or remove, do so now; otherwise, go to
“Completing the installation” on page 47.
Installing DIMMs
DIMMs must be installed in pairs of the same type and speed. To use the memory
mirroring feature, all the DIMMs that are installed in the server must be of the same
type and speed, and the operating system must support the feature. The following
instructions are for installing one pair of DIMMs. To install DIMM pairs on more than
one memory card, repeat steps 3 though 7 for each memory card.
Installing a DIMM
To install a DIMM, complete the following steps:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 21.
2. Turn off the server and peripheral devices, and disconnect the power cords
and all external cables necessary to replace the device.
36 IBM System x3950 Type 8878 and System x3950 E Type 8879: User’s Guide