Using Memory Ras Feature - NEC Exress5800 Series User Manual

Chapter 2 Preparations
1.11.8

Using Memory RAS feature

This server has RAS feature including Standard Memory feature (x4 SDDC ECC memory), Memory Mirroring
feature, Memory Sparing feature, and Memory Lock Step (x8 SDDC ECC memory) feature. Single Device Data
Correction (SDDC) allows automatic correction of memory error (multi-bit error).
The memory area on the motherboard of the server is divided into four memory channels.
Memory Mirroring and Memory Lock Step (x8 SDDC) features keep memory redundancy between memory
channels by monitoring or altering memory active/inactive status, respectively.
•
Note See List of features supported by additional memory card in 1.11.3 Memory
RAS feature before using memory RAS feature.
• Only the features that additional memory card supports can be used.
• N8102-686F/687F/691/693 is not supported to x4 SDDC
Memory controller
Express5800/R120g-2E User's Guide
1. Installing Internal Optional Devices
Memory controller
69