IBM 88743BU - System x3950 E, Руководство пользователя

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Chapter 3. Hardware configuration
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giving a reduction in overall memory that is available to the operating system of
256 MB per node. The XceL4v architecture is discussed in 1.6.2, “XceL4v
dynamic server cache” on page 30.
A minimum of 4 GB of memory must be installed in one node if you want to form
a multinode complex. This is discussed in 4.4, “Prerequisites to create a
multinode complex” on page 201.
From a performance view of point, all nodes should have the same amount of
memory and the population within and over the memory cards should be
balanced. This reduction in memory is reflected in the power-on self-test (POST)
with the addition of a new line of text specifying the amount of available system
main memory after the L4 scalability cache for each node has been subtracted.
Example 3-6 shows what you see in a two-node complex.
Example 3-6 Two-node system
64GB Memory: Installed
512MB Memory: Consumed by Scalability
To replace or add any DIMMs, remove one or more of the installed memory
cards, or add a new one.For an explanation of how this can even be done while
the system and the operating system are up and running, refer to sections:
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3.2.3, “Memory mirroring” on page 118
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3.2.4, “Hot-swap memory” on page 119
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3.2.5, “Hot-add memory” on page 120
Figure 3-14 on page 116 shows the layout of a memory card with its available
status and failure LED indicators.