Adding and replacing a memory card

When a recoverable error is found by memory scrubbing, the Memory ProteXion feature writes the data that was to be stored in the damaged memory locations to spare memory locations within the same DIMM.

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

Adding a memory card

Complete the following steps to add a memory card:

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.

3.Remove the cover from the server (see “Removing the cover and bezel” on page 23).

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

c.Install DIMMs in the memory card (see “Installing DIMMs” on page 36).

5.Add the memory card:

Attention: When moving 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.

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

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

If you have other options to install or remove, do so now; otherwise, go to “Completing the installation” on page 47.

Hot-replacing a memory card

To hot-replace a memory card, memory mirroring must be enabled. See “Active

Memory” on page 33 for information on how to enable memory mirroring.

Complete the following steps to hot-replace a memory card in the server:

1.Read the safety information that begins on page v and “Installation guidelines” on page 21.

Attention: Static electricity that is released to internal server components when the server is powered-on might cause the server to halt, which could result in the loss of data. To avoid this potential problem, always use an electrostatic-discharge wrist strap or other grounding system when working inside the server with the power on.

2.Remove the cover from the server (see “Removing the cover and bezel” on page 23).

3.Make sure the memory hot-swap enabled LED is lit on the top of the memory card to be replaced. If the LED is not lit, enable memory mirroring (see “Active Memory” on page 33).

IBM 71455DU Adding and replacing a memory card, Adding a memory card, Hot-replacing a memory card