HP ProLiant DL180 Gen9 - DIMM Identification; Memory Configurations

Hardware options installation 85
DIMM identification
To determine DIMM characteristics, see the label attached to the DIMM and refer to the following
illustration and table.
Item
Description
Definition
1
Capacity
8 GB
16 GB
32 GB
64 GB
2
Rank
1R = Single-rank
2R = Dual-rank
4R = Quad-rank
3
Data width on DRAM
x4 = 4-bit
x8 = 8-bit
4
Memory generation
DDR4
5
Maximum memory speed
2133 MT/s
2400 MT/s
6
CAS latency
P=15
T=17
7
DIMM type
R = RDIMM (registered)
L = LRDIMM (load reduced)
For more information about product features, specifications, options, configurations, and compatibility,
see the product QuickSpecs on the Hewlett Packard Enterprise website (http://www.hpe.com/info/qs).
Memory configurations
To optimize server availability, the server supports the following AMP modes:
• Advanced ECC—Provides up to 4-bit error correction. This mode is the default option for this server.
• Online spare memory—Provides protection against failing or degraded DIMMs. Certain memory is
reserved as spare, and automatic failover to spare memory occurs when the system detects a DIMM
that is degrading. This allows DIMMs that have a higher probability of receiving an uncorrectable
memory error (which would result in system downtime) to be removed from operation.
• Mirrored memory—Provides maximum protection against failed DIMMs. Uncorrectable errors in one
channel are corrected by the mirror channel.
Advanced Memory Protection options are configured in the BIOS/Platform Configuration (RBSU). If the
requested AMP mode is not supported by the installed DIMM configuration, the server boots in Advanced