9-34 Upgrading Your Server
Memory mirroring
The memory mirroring feature writes the same data into two groups of DIMMs corresponding with
each other between memory channels (channels 0 and 1) to provide data redundancy.
IMPORTANT:
The memory mirroring feature uses channels 0 and 1. In memory mirroring
configuration, the memory channel 2 of each CPU (CPU1-DIMM3/6,
CPU2-DIMM3/6) is disabled.
To use the Memory Mirroring feature, an additional memory stick
(N8102-387/388/389/390/391) is required.
Mirror set
#3
Mirror set
#1
Mirror set
#4
Mirror set
#2
CPU2-DIMM3
CPU1-DIMM1
CPU1-DIMM4
CPU1-DIMM2
CPU1-DIMM5
CPU1-DIMM3
CPU1-DIMM6
CPU2-DIMM4
CPU2-DIMM1
CPU2-DIMM5
CPU2-DIMM2
CPU2-DIMM6
Memory controller
Memory controller
CH0
CH0
CH1
CH1
CH2
CH2
CH0
Data 1
Data 2
Data 3
Data 4
CH1
Data 1
Data 2
Data 3
Data 4
CPU1
CPU2
NOTE:
The operating system only recognizes a half of the total
physical capacity.
Example:
In 2-CPU
configuration
Summary of Contents for Express5800/R120b-1
Page 20: ...Notes on Using Your Server 1 3 3 5 inch disk model...
Page 87: ...3 24 Setting Up Your Server This page is intentionally left blank...
Page 268: ...6 14 Installing and Using Utilities Windows Server 2003...
Page 296: ...7 14 Maintenance This page is intentionally left blank...
Page 350: ...8 54 Troubleshooting When you use a remote console 6 Each tool is selected and it starts...
Page 438: ...9 82 Upgrading Your Server This page is intentionally left blank...
Page 450: ...C 2 IRQ This page is intentionally left blank...
Page 474: ...D 24 Installing Windows Server 2008 R2 4 Activate Windows The Windows activation is complete...
Page 504: ...E 28 Installing Windows Server 2008 4 Activate Windows The Windows activation is complete...
Page 564: ......
Page 566: ...H 2 Using a Client Computer Which Has a CD Drive This page is intentionally left blank...
Page 576: ...I 10 Accessing Power and Performance Data This page is intentionally left blank...
Page 580: ...J 4 Product Configuration Record Table This page is intentionally left blank...