NEC Express 5800, User Manual

Page: 98 / 719

Hardware
98
At DIMM sparing failure occurrence
Memory Scrubbing
This function provides the patrol scrubbing and demand scrubbing functions. It can search in the
system memory preliminarily to detect a single-bit error automatically and correct correctable
errors, and can reduce the possibility of a multi-bit error occurrence in the same memory by
setting to never use the memory location permanently as an unreadable area.
PAIR #7 PAIR #8
PAIR #5 PAIR #6
DIMM #5
PAIR #3
DIMM #6 DIMM #7
PAIR #4
DIMM #8
DIMM #1
PAIR #1
DIMM #2 DIMM #3
PAIR #2
DIMM #4
DIMM #9
DIMM #14 DIMM #13
DIMM #10 DIMM #12 DIMM #11
DIMM #16 DIMM #15
Memory
Buffer#1
Memory
Buffer#2
Memory
Buffer#3
Memory
Buffer#4
Ch.0 Ch.0
Ch.1
Ch.1
Ch.0 Ch.0 Ch.1 Ch.1
Processor
Memory Controller#1 Memory Controller#2
Ch.A Ch.B
Ch.C
Ch.D
QUARTET
#1
QUARTET
#2
QUARTET
#4
QUARTET
#3
Switch to
Standby
Switch to
Active
Failure Occurrence
At DIMM sparing failure occurrence