Upgrading Your Server 9-33
Using the Memory RAS Features
The server has RAS feature including "Standard memory configuration (x4 SDDC ECC memory)",
a "memory mirroring feature", a "memory sparing feature", and a "LockStep (x8 SDDC ECC
memory) feature". SDDC (Single Device Data Correction) allows automatic correction of memory
error (multi-bit error).
IMPORTANT:
To use the memory mirroring feature or LockStep (x8 SDDC ECC memory)
feature, an additional memory stick (N8102-387/388/389/390/391) is required.
To use x4 SDDC ECC memory feature, an additional memory stick
(N8102-371/372/373/374/375) is required.
The memory area on the motherboard of the server is divided into two memory channels as shown
in the figure below.
Memory controller
Memory controller
The memory mirroring and LockStep features keep memory redundancy between memory channels
by monitoring or altering memory active/inactive status, respectively.
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...