Hardware Options Installation; Introduction; Memory Options; Memory Subsystem Architecture - HP ProLiant DL120 G7 User Manual

Hardware options installation

Introduction

If more than one option is being installed, read the installation instructions for all the hardware options and
identify similar steps to streamline the installation process.
WARNING:
internal system components to cool before touching them.
CAUTION:
beginning any installation procedure. Improper grounding can cause electrostatic discharge.

Memory options

The server memory subsystem supports only UDIMMs.
The server supports dual-rank, PC3-10600E (DDR3) DIMMs operating at a speed of 1,333 MHz.
Depending on the processor model and the number of DIMMs installed, the memory clock speed might be
reduced to 1,066 or 800 MHz. For more information, see "General DIMM slot population guidelines (on
page 30)."

Memory subsystem architecture

The memory subsystem in this server is divided into channels. The processor supports two channels, and each
channel supports two DIMM slots, as shown in the following table.
Channel
A
B
This server supports only UDIMMs.
DIMM slots in this server are identified by number and by letter. Letters identify the slots to populate for
specific memory modes. Slot numbers are reported by ROM messages during boot and for error reporting.

Single-rank and dual-rank DIMMs

DIMM configuration requirements are based on these classifications:
•
Single-rank DIMM—One set of memory chips that is accessed while writing to or reading from the
memory.
•
Dual-rank DIMM—Two single-rank DIMMs on the same module, with only one rank accessible at a time.
To reduce the risk of personal injury from hot surfaces, allow the drives and the
To prevent damage to electrical components, properly ground the server before
Slot
C
A
D
B
Slot number
1
2
3
4
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