Intel® Server System SR9000MK4U Product Guide 27
In the path to 1-B no new memory box is needed and therefore has a lower cost for capacity addition.Memory mirroring is applicable to 3-A, but not to 2-A nor 1-B.
AF001102
Upgrade Path
MC MC
NDC NDC
Single Mode
1MMR/4DIMM
Upgrade Path
Upgrade Path
MC MC MC MC MC MC MC MC
NDC NDC
Double Mode Mirror Mode 4MMR/16DIMM
W
Z
1
-
A
4
-
A
MMR
MMR MMR
Upgrade Path
Upgrade Path
MC MC MC MC
NDC NDC
Single Mode 2MMR/8DIMM
X
MMR Upgrade Path
Upgrade Path
MC MC MC MC
NDC NDC
Double Mode Mirror Mode 2MMR/8DIMM
Upgrade Path
Y
3
-
A
MMR
2-A