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1. Installing Internal Optional Devices
Express5800/R120g-2M User’s Guide
60
Chapter 2 Preparations
Removal / Replacement
1.11.6
To remove DIMM, reverse the installation procedure.
Be sure to install dummy cover to the slots from where DIMMs are removed.
Important Failing to install dummy cover to vacant slot may cause malfunction of the
server due to insufficient cooling effect.
Note
When removing a defective DIMM, check error messages displayed at POST or
NEC ESMPRO and check the DIMM socket where the defective DIMM is installed.
Follow the steps below after replacing or removing DIMMs.
1. Confirm that no error messages are displayed on POST. If any error message is displayed, see
Chapter
3 (1. Post Error Message)
in "
Maintenance Guide
".
2. Run BIOS Setup Utility, select
Advanced
Memory Configuration
Memory Retest
, and set
Yes
.
3. Select
Server
Power Measurement Policy
, set
One Time
, and then select
Save Changes and Exit
.
4. Set the size of Paging File to the recommended size (1.5x total memory size) or more.
If using a Windows OS, see
Chapter 1 (6.1 Specifying Memory Dump Settings (Debug Information))
in
"
Installation Guide (Windows)
".
For other OS, follow the manual of the OS.
Cluster On Die and Early Snoop features
1.11.7
Advanced
Memory Configuration
submenu in BIOS Setup Utility has two options, listed in the following table.
Option
Parameter
Description
Cluster On Die
[Disabled]
Enabled
Enables or disables the Cluster On Die feature. This option can be
set to
Enabled
when NUMA is enabled and the processor(s)
support(s) the Cluster On Die feature.
- Note: If you use the OS below, this item must be disabled.
- VMware ESXi 5
Early Snoop
Disabled
[Enabled]
Enables or disables the early snoop mode for processor(s) snoop
mode. This option can be set to
Enabled
when Cluster On Die is
disabled.
[ ] : Factory setting
Read the following when enabling the Cluster On Die feature.
-
1CPU configuration
Memory RAS Mode: Independent / Mirroring / Lockstep
At least, all of CPU1_DIMM1 to DIMM4 must be filled by DIMM.
Memory RAS Mode: Sparing
At least, all of CPU1_DIMM1 to DIMM3, DIMM5 to DIMM7, DIMM9 to DIMM11 must be filled by DIMM.
-
2CPU configuration
Memory RAS Mode: Independent / Mirroring / Lockstep
At least, all of CPU1_DIMM1 to DIMM4 and CPU2_DIMM1 to DIMM4 must be filled by DIMM.
Memory RAS Mode: Sparing
At least, all of CPU1_DIMM1 to DIMM3, DIMM5 to DIMM7, DIMM9 to DIMM11 and CPU2_DIMM1 to
DIMM3, DIMM5 to DIMM7, DIMM9 to DIMM11 must be filled by DIMM.
In order to effectively utilize the Cluster On Die feature, the following DIMM installed number is recommended.
-
1CPU configuration
Memory RAS Mode: Independent / Mirroring / Lockstep
Mount DIMMs to CPU1_DIMM1 to DIMM8 slot, or mount DIMMs to CPU1_DIMM1 to DIMM12 slot.
Memory RAS Mode: Sparing
Mount DIMMs to CPU1_DIMM1 to DIMM12 slot.