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.
v 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.
v The server supports only industry-standard double-data-rate 4 (DDR4), 1600,
1866, or 2133 MHz, PC4-12800, PC4-14900, or PC4-17000 registered or load
deduction, synchronous dynamic random-access memory (SDRAM) dual inline
memory modules (DIMMs) with error correcting code (ECC). See
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us/ 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.
ggggg eRxff PC4v-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)
v Blank = 1.2 V specified
- wwwww is the DIMM bandwidth, in MBps
Figure 93. DIMM removal
Chapter 5. Removing and replacing components 167
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