Hardware options installation 32
Dual- and quad-rank DIMMs provide the greatest capacity with the existing memory technology. For
example, if current DRAM technology supports 8-GB single-rank DIMMs, a dual-rank DIMM would be 16
GB, and a quad-rank DIMM would be 32 GB.
LRDIMMs are labeled as quad-rank DIMMs. There are four ranks of DRAM on the DIMM, but the LRDIMM
buffer creates an abstraction that allows the DIMM to appear as a dual-rank DIMM to the system. The
LRDIMM buffer isolates the electrical loading of the DRAM from the system to allow for faster operation. This
allows higher memory operating speed compared to quad-rank RDIMMs.
DIMM identification
To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and
table.
Item Description
Definition
1
Capacity
8 GB
16 GB
32 GB
2
Rank
1R = Single-rank
2R = Dual-rank
4R = Quad-rank
3
Data width
x4 = 4-bit
x8 = 8-bit
4
Memory generation DDR4
5
Maximum memory
speed
2133 MT/s
6
CAS latency
P=15
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 HP website
Memory configurations
To optimize server availability, the server supports the following AMP modes:
Summary of Contents for ProLiant XL230a Gen9
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