HP ML150 HP ProLiant ML100 Series Server User Guide - Page 25

DIMM identification, Memory configurations, Description, Definition - quickspecs

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DIMM identification IMPORTANT: This server does not support mixing RDIMMs and UDIMMs. Attempting to mix these two types causes the server to halt during BIOS initialization. The memory subsystem may be populated with either RDIMMs or UDIMMs, but mixing the two types is not supported. To determine DIMM characteristics, use the label attached to the DIMM and the following illustration and table. Item Description 1 Size 2 Rank 3 Data width 4 Memory speed 5 DIMM type Definition - 1R = Single-rank 2R = Dual-rank 4R = Quad-rank x4 = 4-bit x8 = 8-bit 10600 = 1333-MHz 8500 = 1067-MHz R = RDIMM (registered) E = UDIMM (unbuffered with ECC) For the latest supported memory information, see the QuickSpecs on the HP website (http://www.hp.com). Memory configurations To optimize server availability, the server supports the following AMP modes: • Advanced ECC-provides the greatest memory capacity for a given DIMM size, while providing up to 8-bit error correction, depending on the specific DIMM type. This mode is the default option for this server. Hardware options installation 25

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Hardware options installation 25
DIMM identification
IMPORTANT:
This server does not support mixing RDIMMs and UDIMMs. Attempting to mix
these two types causes the server to halt during BIOS initialization.
The memory subsystem may be populated with either RDIMMs or UDIMMs, but mixing the two types is not
supported. To determine DIMM characteristics, use the label attached to the DIMM and the following
illustration and table.
Item
Description
Definition
1
Size
—
2
Rank
1R = Single-rank
2R = Dual-rank
4R = Quad-rank
3
Data width
x4 = 4-bit
x8 = 8-bit
4
Memory speed
10600 = 1333-MHz
8500 = 1067-MHz
5
DIMM type
R = RDIMM (registered)
E = UDIMM (unbuffered with ECC)
For the latest supported memory information, see the QuickSpecs on the HP website
(
).
Memory configurations
To optimize server availability, the server supports the following AMP modes:
•
Advanced ECC—provides the greatest memory capacity for a given DIMM size, while providing up
to 8-bit error correction, depending on the specific DIMM type. This mode is the default option for
this server.