Figure 58. DIMM removal
Step 6.
If you are instructed to return the DIMM, follow all packaging instructions, and use any packaging
materials for shipping that are supplied to you.
Installing a memory module
The following notes describe the types of DIMMs that the server supports and other information that you
must consider when you install DIMMs.
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed.
• The server supports only industry-standard double-data-rate 4 (DDR4), 2400 MHz, PC4-19200 registered
or load deduction, synchronous dynamic random-access memory (SDRAM) dual inline memory modules
(DIMMs) with error correcting code (ECC). See http://www.lenovo.com/ serverproven/ for a list of
supported memory modules for the server.
– The specifications of a DDR4 DIMM are on a label on the DIMM, in the following format.
gggggeRxff
PC4
v
-
wwwwwm
-
aa
-
bb
-
ccd
where:
–
ggggg
is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
–
eR
is the number of ranks
1R = single-rank
2R = dual-rank
4R = quad-rank
–
xff
is the device organization (bit width)
x4 = x4 organization (4 DQ lines per SDRAM)
x8 = x8 organization
x16 = x16 organization
–
v
is the SDRAM and support component supply voltage (VDD)
.
Removing, and replacing components
129
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