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1. Installing Internal Optional Devices
Express5800/R120g-2M User’s Guide
66
Chapter 2 Preparations
Memory Lock Step feature can be used under the following conditions:
Install DIMMs in DIMM slots to configure a Lock Step set.
All the installed DIMMs should have the same capacity.
Run BIOS Setup Utility (SETUP), change parameters as shown below, save the settings, and exit.
Advanced
Memory Configuration
Memory RAS Mode
LockStep
Server
Power Measurement Policy
One Time
After restart, run SETUP again, and check if "
Lock Step
" is displayed for the following parameter.
Advanced
Memory Configuration
Memory Information
CPUx_DIMMx Status
Installation order depends on CPU configuration. See the figure below.
Memory Lock Step cannot be configured in the following cases:
Memory Lock Step between memory channels of different memory controllers (CPU)
Memory Lock Step within the same memory channel
Notes on Configuring Lock Step
In Memory Lock Step configuration,
Memory RAS Mode
menu is changed from "
Lock Step
" to "
Independent
"
in the following cases:
When you additionally install DIMMs that unable to configure Memory Lock Step
When you remove DIMMs that takes down Memory Lock Step
1CPU
構成
搭載順序
2CPU
構成
搭載順序
2
4
6
2
4
6
5
3
1
5
3
1
3
7
11
3
7
11
9
5
1
9
5
1
4
8
12
4
8
12
10
6
2
10
6
2
CPU1_DIMM 3
CPU1_DIMM 7
CPU1_DIMM 11
CPU1_DIMM 4
CPU1_DIMM 8
CPU1_DIMM 12
CPU1_DIMM 10
CPU1_DIMM 6
CPU1_DIMM 2
CPU1_DIMM 9
CPU1_DIMM 5
CPU1_DIMM 1
CPU2_DIMM 3
CPU2_DIMM 7
CPU2_DIMM 11
CPU2_DIMM 4
CPU2_DIMM 8
CPU2_DIMM 12
CPU2_DIMM 10
CPU2_DIMM 6
CPU2_DIMM 2
CPU2_DIMM 9
CPU2_DIMM 5
CPU2_DIMM 1
1CPU
configuration
2CPU
configuration