HP ProLiant ML110

System Configuration
Figure 4-17: Installing the heat sink-cooling fan assembly
5. Observe the post-installation procedures.
Memory
Your HP ProLiant server has four DIMM slots that support:
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DDR 400 unbuffered ECC DIMMs in 256 MB, 512 MB, or 1GB configuration
Up to two DIMMs per channel, single-sided and/or double-sided
Byte masking on writes through data masking
Single-bit Error Correcting Code (or Error Checking and Correcting) on the system
memory interface
Memory Operating Modes
NOTE: In the following discussion, channel A corresponds to the DIMM1 and DIMM2 slots, while
channel B to the DIMM3 and DIMM4 slots. Refer to the “Mainboard Components” section on Chapter 2
for view of the mainboard layout.
The MCH (memory controller hub) of your server supports the following operation modes:
Single-channel mode (SC)
— Populate channel A only
— Populate channel B only
— Populate both channel A and B
If either only channel A or only channel B is populated, then the MCH is set to operate in
single-channel mode. Data is accessed in chunks of 64 bits (8B) from the memory
channels. If both channels are populated with uneven memory (DIMMs), the MCH
defaults to virtual single-channel (VSC) mode.
4-18 HP ProLiant ML110 Server Operations and Maintenance Guide