HP ProLiant ML570 Generation 2 Server Memory Installation Guide

Memory
Single-Board Mirrored Memory Technology
This section details the features and DIMM installation requirements for single-board
mirrored memory.
Features
Single-board mirrored memory uses mirrored banks on a single memory board to
provide a high level of memory redundancy. Single-board mirrored memory has the
following advantages:
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Single-board mirrored memory provides protection against uncorrectable errors.
If a DIMM on the memory board has an uncorrectable error, the system reads
from the mirrored banks instead.
If configured for single-board mirrored memory, the server can support up to
8 GB of system memory and 8 GB of redundant memory using 2-GB DIMMs.
IMPORTANT: DIMMs in the redundant banks must be configured identically to the banks they
are mirroring.
IMPORTANT: If a DIMM exceeds the HP pre-defined limit for correctable errors, the system
fails over to the redundant banks.
Single-board mirrored memory is configured with one memory board only, which
must be installed in memory board slot 1. Bank C mirrors bank A, and, if populated,
bank D mirrors bank B. If any DIMM in bank A or bank B has an uncorrectable
error, the system performs the following actions:
Rereads the correct data from the redundant memory banks
Performs all future reads from the redundant memory banks
Provides notification of the DIMM failure using the memory board LEDs, the
front-panel internal health LED, and Insight Manager 7
HP ProLiant ML570 Generation 2 Server Memory Installation Guide 1-17
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