10-3
DRAM DIMM rank classification label
A DIMM rank is a set of memory chips that the system accesses while writing or reading from the
memory. On a multi-rank DIMM, only one rank is accessible at a time.
To determine the rank classification of a DRAM DIMM, use the label attached to the DIMM, as shown
in
Figure 10-1 DRAM DIMM rank classification label
Table 10-1 DIMM rank classification label description
Callout Description
Remarks
1 Capacity
•
8GB
.
•
16GB
.
•
32GB
.
2
Number of ranks
•
1R
—One rank.
•
2R
—Two ranks.
•
4R
—Four ranks.
•
8R
—Eight ranks.
3 Data
width
•
×4
—4 bits.
•
×8
—8 bits.
4
DIMM generation
Only DDR4 is supported.
5 Data
rate
•
2133P
—2133 MHz.
•
2400T
—2400 MHz.
•
2666V
—2666 MHz.
•
2933Y
—2933 MHz.
6 DIMM
type
•
L
—LRDIMM.
•
R
—RDIMM.
HDDs and SSDs
Drive specifications
SAS HDDs
Model
Form factor
Capacity
Rate
Rotating speed
HDD-300G-SAS-12G-10K-SFF-EP
SFF
300 GB
12 Gbps
10000 RPM
