17
Item
Description
Example
1
Capacity
16 GB
32 GB
64 GB
128 GB
256 GB
2
Rank(s)
1R = Single rank
2R = Dual rank
2S2R = 3DS 2Hi 2 rank
4DR = DDP 4 rank
4R = Quad rank
3
Data width of DRAM
x4 = 4 bits
x8 = 8 bits
4
DIMM slot type
PC4 = DDR4
5
Maximum memory speed
2,933 MT/s
3,200 MT/s
6
CAS latency time
SDP chip based
V = CAS 19-19-19
Y = CAS 21-21-21
AA = CAS 22-22-22
3DS chip based
V = CAS 22-19-19
Y = CAS 24-21-21
AA = CAS 26-22-22
7
DIMM type
R = RDIMM
L = LRDIMM
2. Memory Subsystem Architecture
NF5448A6 provides 32 DIMM slots with 8 internal memory channels per processor.
Install DIMMs in the slots of active DIMM channels first. DIMMs in the standby channels
cannot be used normally if no DIMMs are installed in the active channels.
Table 5-5 Channel Composition