IBM x3800 User Guide - Page 48
Memory, Hot-Swap, Enabled, Error, Power
![]() |
UPC - 000435948984
View all IBM x3800 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 48 highlights
Table 4. Alternate memory card installation sequence Installation order Memory card First 1 Second 3 Third 2 Fourth 4 DIMM pair 1 and 3 2 and 4 1 and 3 2 and 4 1 and 3 2 and 4 1 and 3 2 and 4 Table 5. Memory card installation sequence for memory-mirrored configuration Installation order Memory card DIMM pair First 1 1 and 3 3 1 and 3 Second 2 1 and 3 4 1 and 3 Third 1 2 and 4 3 2 and 4 Fourth 2 2 and 4 4 2 and 4 v There are two memory power buses, which are split between the four memory cards. Memory cards 1 and 2 are on power bus 1, and memory cards 3 and 4 are on power bus 2. If memory mirroring is enabled, you can hot-replace one memory card at a time on each memory power bus. v 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 Port Power Error Memory Hot-Swap Enabled 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 memory card or DIMM 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 and replace a failed DIMM. This LED also turns off when the release levers are opened. 36 IBM System x3800 Type 8865: User's Guide
![](/manual_guide/products/ibm-x3800-user-guide-eaa82a2/48.png)