Plugging rules for memory modules in the 5148-21L, 5148-22L, 8247-21L, 8247-22L, 8284-21A, or 8284-22A system
Find information about the configurations and rules that apply to memory modules for the 5148-21L, 5148-22L, 8247-21L, 8247-22L, 8284-21A, or 8284-22A system. This information helps you to install memory modules in the system.
Figure 1 shows the locations of the memory modules for the 8247-22L or 8284-22A system with two system processors configuration, and
Table 1 provides information about the
plugging rules for the memory modules in the 5148-21L, 5148-22L,
8247-21L, 8247-22L, 8284-21A, or 8284-22A system.
The following table lists the feature codes of the memory modules that
are supported on the 5148-21L, 5148-22L,
8247-21L, 8247-22L, 8284-21A, or 8284-22A system:
System | Supported feature codes (FC) |
---|---|
8284-22A |
|
8284-21A, 5148-21L, or 5148-22L |
|
8247-21L, 8247-22L, 5148-21L, or 5148-22L |
|
Note: To determine if your memory modules have the same
feature code, compare the part numbers of the memory modules installed
in the system to the memory modules being installed. If you need additional
help, contact your next level of support.
Notes:
- The 5148-21L, 5148-22L, 8247-21L, 8247-22L, or 8284-22A system supports memory modules of 16 GB, 32 GB, and 64 GB.
- The 8284-21A system supports memory modules of 16 GB and up to 4 x 32 GB.
- The 8247-21L and 8284-21A systems support a minimum of one memory module and provide a minimum of 16 GB memory.
- The 8247-22L or 8284-22A system supports a minimum of two (a pair of) memory modules and provides a minimum of 32 GB memory.
- A memory module pair must be identical and can be different from the other pairs of memory modules.
- The mixing of DDR3 and DDR4 memory in the system is not allowed. Attention: IBM strongly recommends that the customer review the minimum firmware levels that are required for DDR4 memory DIMMS and recommendation as to how to plug them to prevent any exposures.
Number of system processors | Plugging sequence |
---|---|
One system processor (8247-21L, 8284-21A, or 5148-21L) |
|
Two system processors (8247-22L, 8284-22A, 5148-22L) |
|