IBM 9080-M9S

Memory modules
Installing memory modules
Preparing the 9080-M9S system to install memory modules
About this task
The following memory congurations are available for the systems.
• The system nodes use DDR4 memory modules.
• DDR3 memory modules are also supported. Mixing of DDR3 and DDR4 memory modules are not
supported in the same system node.
• For each processor socket, a minimum of 4 of the 8 memory modules must be populated. The only valid
number of memory modules plugged into sites for a given processor module is 4 or 8.
• The memory modules must be plugged in quads (a group of 4). Odd numbers or having 6 memory
modules for a processor is not supported.
• Each memory module within a quad must be the same size and type. The memory module quads can be
different from each other.
• To ensure proper cooling, a memory module or a memory module ller is required in all locations.
• Table 8 on page 103 shows the base memory plugging rules.
• Table 9 on page 103 shows the plugging rules for adding memory. Quads must be added next to a
processor. The quads can be added in any order.
Table 8. Base memory plugging rules
Memory module location CPU socket
P1-C22, P1-C23, P1-C28, P1-C29 P1
P1-C30, P1-C31, P1-C36, P1-C37 P3
P1-C38, P1-C39, P1-C44, P1-C45 P2
P1-C46, P1-C47, P1-C52, P1-C53 P0
Table 9. Upgrading memory plugging rules. Plug the additional quad of memory modules in any of the
remaining open quad slots
Memory module location CPU socket
P1-C24, P1-C25, P1-C26, P1-C27 P1
P1-C32, P1-C33, P1-C34, P1-C35 P3
P1-C40, P1-C41, P1-C42, P1-C43 P2
P1-C48, P1-C49, P1-C50, P1-C51 P0
Procedure
1. From the Operation list, select Set Identify LED. Then, click OK to conrm the operation.
This action causes causes the blue system ID LED to turn on. You can also identify the locations for the
memory to be installed.