Active Memory - IBM 72335LU - System x3850 M2 User Manual

Active Memory

Active Memory is an IBM technology that improves the reliability of the DIMMs
through the memory mirroring, memory scrubbing, and Memory ProteXion
features.
The following notes describe the Active Memory features:
v Memory mirroring enables you to improve the reliability of the memory in your
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IBM System x3850 M2 and System x3950 M2 Type 7141: User's Guide
Memory hot-swap enabled LED: When this LED is lit, it indicates that hot-swap
memory is enabled.
Memory card/DIMM error LED: When this LED is lit, it indicates that a memory
card or DIMM has failed.
Memory card power LED: When this LED is off, it indicates that power is
removed from the card and that you can remove the memory card and replace a
failed DIMM. This LED also turns off when the release levers are opened.
server by creating a mirror of the data in memory port 1 and storing it in memory
port 2.
Note: For memory mirroring to work, DIMMs of the same size and clock speed
must be installed in both memory ports.
To enable memory mirroring, complete the following steps:
1. Install DIMMs of the same size and clock speed in the two memory ports.
2. Enable memory mirroring in the Configuration/Setup Utility program:
a. Turn on the server.
b. When the prompt Press F1 for Configuration/Setup is displayed, press
F1.
c. From the Configuration/Setup Utility main menu, select Advanced Setup.
d. Select Memory Settings.
Memory hot-swap
enabled LED
Memory card/DIMM
error LED
Memory card
power LED
™