IBM 71453RU manual Installing a memory card, Installing DIMMs

Installing a memory card

At least one memory card with one pair of DIMMs must be installed for the server to operate correctly.

The Intel 7500 Scalable Memory Buffer memory card and the Intel 7510 Scalable Memory Buffer memory card are not interchangeable and cannot be used in the same server. To verify that your server supports the memory card that you are installing, look at the label on the top of the memory card. If the label does not state that the memory card can be used only in machine types 7143 and 7191, the memory card can be used only in machine types 7145 and 7146.

NOTE: Only use this memory card with Machine Types 7143 or 7191

To install a memory card, complete the following steps:

1.Read “Safety” on page v and “Installation guidelines” on page 38.

2.Turn off the server and peripheral devices, and disconnect the power cords and all external cables as necessary to replace the device.

3.Remove the server cover (see “Removing the top cover” on page 44).

4.Remove the memory card filler.

5.Prepare the 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.Open the levers on the top of the memory card.

c.Place the memory card on a flat, static-protective surface, with the DIMM connectors facing up.

d.Install DIMMs in the memory card (see “Installing DIMMs”).

6.Add the memory card.

Attention: When you move the memory card, do not allow it to touch any components or structures inside the server.

a.Grasp the memory card by the retention levers and turn the memory card so that the connector aligns with the connector on the microprocessor board and the guides on the chassis.

b.Insert the memory card into the memory-card connector.

c.Press the memory card into the connector and close the retention levers.

d.Slide the blue release latch to the locked position.

If you have other devices to install or remove, do so now. Otherwise, go to “Completing the installation” on page 79.

Installing DIMMs

DIMMs must be installed in pairs of the same type and speed. For you to use the memory mirroring feature, all the DIMMs that are installed in the server must be the same type and speed, and the operating system must support memory

70IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide