Table 11. DIMM population sequence with memory mirroring enabled or disabled in independent memory mode
(continued)
DIMM installation order
Independent mode with memory
mirroring disabled
Independent mode with memory
mirroring enabled
5 DIMM connector 15 DIMM connectors 8 and 20
6 DIMM connector 24 DIMM connectors 5 and 17
7
DIMM connector 19 DIMM connectors 2 and 14
8 DIMM connector 16 DIMM connectors 11 and 23
9 DIMM connector 8 DIMM connectors 7 and 21
10 DIMM connector 5 DIMM connectors 4 and 18
11 DIMM connector 2 DIMM connectors 3 and 13
12 DIMM connector 11 DIMM connectors 12 and 22
13 DIMM connector 14
14 DIMM connector 23
15 DIMM connector 20
16 DIMM connector 17
17 DIMM connector 7
18 DIMM connector 4
19 DIMM connector 3
20 DIMM connector 12
21 DIMM connector 13
22 DIMM connector 22
23 DIMM connector 21
24 DIMM connector 18
Memory rank sparing in independent mode
This topic describes using the memory rank sparing feature in independent memory mode.
The server supports memory rank sparing. Memory rank sparing reserves memory capacity for failover in the
event of a DIMM failure, and the reserved capacity is subtracted from the total available memory. Memory
sparing provides less redundancy than memory mirroring does. If a predetermined threshold of correctable
errors is reached, the contents of the failing DIMM are copied to the spare memory, and the failing DIMM or
rank is disabled.
The DIMM installation order for memory rank sparing follows the independent mode (performance) or
lockstep mode (RAS) installation order based on the mode of operation selected.
To enable memory rank sparing through the Setup utility, select System Settings → Memory → Memory
Mode. For more information, see “Using the Setup utility” on page 123. For more information and notes
about installing DIMMs, see “Installing a memory module” on page 46.
The DIMM installation order for memory rank sparing follows the independent mode (performance) or
lockstep mode (RAS) installation order based on the mode of operation selected. For more information, see
“Independent memory mode” on page 53, and “Lockstep memory mode” on page 57.
Consider the following when using the memory rank sparing feature in independent memory mode:
Chapter 2. Installing optional devices 55
To Next Page
Loading...
