IBM 8874 - eServer xSeries MXE 460, Installation Manual

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v
If memory mirroring is enabled, you can hot-replace one memory card at a time
on each memory power bus.
If a problem with a DIMM is detected, light path diagnostics will light the
system-error LED on the front of the server, indicating that there is a problem
and guide you to the defective DIMM. When this occurs, first identify the
defective DIMM; then, remove and replace the DIMM.
The following illustration shows the LEDs on the memory card.
Memory Hot-Swap Enabled
Memory Port Power
Error
Memory Hot-Swap Enabled LED: When this LED is lit, it indicates that
hot-swap memory is enabled.
Error LED: When this LED is lit, it indicates that a DIMM or memory card has
failed.
Memory Port Power LED: When this LED is off, it indicates that power is
removed from the port and that you can remove the memory card to replace a
failed memory card or DIMM.
Installing a DIMM
Complete the following steps to install additional DIMMs:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 7.
2. If you are not hot-swapping a DIMM, turn off the server and peripheral devices,
and disconnect the power cords and all external cables necessary to replace
the device.
Attention: When moving the memory card, do not allow it to touch any
components or structures inside the server.
If you are hot-swapping a DIMM, make sure that the Memory Hot-Swap
Enabled LED is lit.
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xSeries 460 Type 8872 and xSeries MXE 460 Type 8874: Installation Guide