General Dimm Slot Population Guidelines; Advanced Ecc Memory Configuration - HP ProLiant ML350e Gen8 User Manual

Advanced Memory Protection options are configured in RBSU. If the requested AMP mode is not
supported by the installed DIMM configuration, the server boots in Advanced ECC mode. For more
information, see "HPE ROM-Based Setup Utility (on page 94)."
The server also can operate in independent channel mode or combined channel mode (lockstep). When
running in lockstep mode, you gain reliability in one of two ways:
•
If running with UDIMMs (built with x8 DRAM devices), the system can survive a complete DRAM
failure (SDDC). In independent channel mode, this failure would be an uncorrectable error.
•
If running with RDIMM (built with x4 DRAM devices), the system can survive the complete failure of
two DRAM devices (DDDC). Running in independent mode, the server can only survive the
complete failure of a single DRAM device (SDDC).
Maximum capacity
DIMM type
RDIMM
RDIMM
UDIMM
UDIMM
For the latest memory configuration information, see the QuickSpecs on the Hewlett Packard Enterprise
website (http://www.hpe.com).

General DIMM slot population guidelines

Observe the following guidelines for all AMP modes:
•
Install DIMMs only if the corresponding processor is installed.
•
When two processors are installed, balance the DIMMs across the two processors.
•
White DIMM slots denote the first slot of a channel (Ch 1-A, Ch 2-B, Ch 3-C).
•
Do not mix UDIMMs or RDIMMs.
•
When two processors are installed, install the DIMMs in sequential alphabetical order balanced
between the two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C, and so on.
For detailed memory configuration rules and guidelines, use the Online DDR3 Memory Configuration Tool
on the Hewlett Packard Enterprise website (http://www.hpe.com/info/DDR4memoryconfig).

Advanced ECC memory configuration

Advanced ECC memory is the default memory protection mode for this server. Standard ECC can correct
single-bit memory errors and detect multi-bit memory errors. When multi-bit errors are detected using
Standard ECC, the error is signaled to the server and causes the server to halt.
Advanced ECC protects the server against some multi-bit memory errors. Advanced ECC can correct
both single-bit memory errors and 4-bit memory errors if all failed bits are on the same DRAM device on
the DIMM.
Advanced ECC provides additional protection over Standard ECC because it is possible to correct certain
memory errors that would otherwise be uncorrected and result in a server failure. Using HPE Advanced
Memory Error Detection technology, the server provides notification when a DIMM is degrading and has a
higher probability of uncorrectable memory error.
DIMM rank One processor
Single-rank 48 GB
Dual-rank 96 GB
Single-rank 24 GB
Dual-rank 48 GB
Two processors
96 GB
192 GB
48 GB
96 GB
Hardware options installation 47