the failing DIMM or rank is disabled. To enable memory sparing through the
Setup utility, select System Settings > Memory.
v The server system board supports a minimum of 2 GB and a maximum of 384
GB of system memory.
Note: The amount of usable memory is reduced depending on the system
configuration. A certain amount of memory must be reserved for system
resources. To view the total amount of installed memory and the amount of
configured memory, run the Setup utility. For additional information, see
Chapter 3, “Configuring the server,” on page 95
v The following table shows the DIMM connectors that are associated with each
microprocessor:
Table 4. DIMM connectors associated with each microprocessor
Microprocessor
DIMM connectors associated with the
microprocessor
Microprocessor 1 1 through 6
Microprocessor 2 7 through 12
v When you replace a DIMM, the server provides automatic DIMM enablement
capability without you having to go to Setup to enable the new DIMM manually.
v The maximum operating speed of the server is determined by the slowest DIMM
installed in the server.
v The server provide single-socket memory mirroring support. Memory channel 2 is
mirrored exactly to channel 3. This mirroring provides redundancy in memory but
reduces the total memory capacity to one third. Channel 1 DIMM connectors 1,
2, 7, and 8 are not used in memory-mirroring mode.
v A minimum of one DIMM must be installed for each microprocessor. For
example, you must install a minimum of two DIMMs if the server has two
microprocessors installed.
v The server comes with a minimum of one DIMM installed in slot 1. When you
install additional DIMMs, install them in the order shown in the information in the
following tables to optimize system performance.
v The server supports independent mode, rank sparing mode, and mirroring mode.
Chapter 2. Installing optional devices 73
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