Memory mirroring offers the strongest memory
module reliability mode compared to all other modes, providing improved
uncorrectable multi-bit failure protection. In a mirrored configuration,
the total available system memory is one half of the total installed
physical memory. Half of the installed memory is used to mirror the
active memory modules. In the event of an uncorrectable error, the
system switches over to the mirrored copy. This ensures SDDC and multi-bit
protection.
The installation guidelines for memory modules are
as follows:
Memory modules must be identical in size, speed,
and technology.
Memory modules
installed in memory module sockets with white release levers must
be identical and the same rule applies for sockets with black and
green release tabs. This ensures that identical memory modules are
installed in matched pairs—for example, A1 with A2, A3 with A4, A5
with A6, and so on.
Table 1. Processor configurationThis table describes the memory population and its
configuration
Processor
Configuration
Memory population rules
Memory population information
Single CPU
Memory population order
{1,2}, {3,4}
See Memory mirroring note
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