NEC Express5800/T120h User Manual page 79

Chapter 2 Preparations
The followings are the conditions to use this function.

Install 12 DIMMs per CPU.

Use the same type number of DIMMs for the device.

Change the following parameters and save them.
From System Utility, set "System Configuration > BIOS/Platform Configuration (RBSU) > System
Options > Memory Operations > Advanced Memory Protection" to "Mirrored Memory with Advanced
ECC Support".
 After rebooting, confirm that "Advanced Memory Protection Mode：Memory Mirroring with Advanced ECC"
is displayed in POST.
The following types of mirroring cannot be configured.

Memory mirroring in the same memory channel
Note When using Memory Mirroring Function, install 12 DIMMs per CPU.

 Use memories with the same product number for the device.
 Only Intel Xeon Processor Gold 5100 series/Gold 6100 series/Platinum 8100
series can support Partial Mirror.
Express5800/T120h User's Guide
1. Installing Internal Optional Devices
79