Memory in ztC Endurance Systems

Read this topic before you add or replace registered dual in-line memory modules (RDIMMsClosed Registered dual in-line memory module. RDIMMs have a register between the system’s memory controller and the dynamic random-access memory modules, thus allowing for greater capacity and increased reliability.) in a ztC Endurance system.

Memory Components in Each Compute Module

Table 1 lists the memory components in each compute moduleClosed A customer-replaceable unit (CRU) located at the front of the ztC Endurance system. It is equipped with processors, RDIMMs, BIOS, BMC, fans, and other technology to boot and run the ztC Endurance system. Each system contains two compute modules..

Table 1: Memory Components
Model Processors Sockets RDIMM Slots Minimum Number of RDIMMs Maximum Number of RDIMMs
3100 1 2 161 1 4
5100 2 2 16 2 8
7100 2 2 16 4 16

Memory in ztC Endurance 3100 Systems

Table 2 shows a representation, starting from the front of the compute module, of RDIMM locations for supported ztC Endurance 3100 configurations. An "X" indicates the presence of an RDIMM; all other RDIMM slots are empty.

Note: This table does not show the RDIMM slots next to the empty socket.
Table 2: Memory in ztC Endurance 3100 Systems
  ZEN3100-64 ZEN3100-128 ZEN3100-256
Slot 7      
Slot 6   X X
Slot 5      
Slot 4     X
Processor 0
Slot 0 X X X
Slot 1      
Slot 2     X
Slot 3      

Memory in ztC Endurance 5100 Systems

Table 3 shows a representation, starting from the front of the compute module, of RDIMM locations for supported ztC Endurance 5100 configurations. An "X" indicates the presence of an RDIMM; all other RDIMM slots are empty.

Table 3: Memory in ztC Endurance 5100 Systems
    ZEN5100-128 ZEN5100-256 ZEN5100-512
Slot 7 Slot 3            
Slot 6 Slot 2     X   X X
Slot 5 Slot 1            
Slot 4 Slot 0   X   X X X
Processor 0 Processor 1            
Slot 0 Slot 4 X   X   X X
Slot 1 Slot 5            
Slot 2 Slot 6       X X X
Slot 3 Slot 7            

Memory in ztC Endurance 7100 Systems

Table 4 shows a representation, starting from the front of the compute module, of RDIMM locations for supported ztC Endurance 7100 configurations. An "X" indicates the presence of an RDIMM.

Table 4: Memory in ztC Endurance 7100 Systems
    ZEN7100-256 ZEN7100-512 ZEN7100-1024
Slot 7 Slot 3         X X
Slot 6 Slot 2 X   X X X X
Slot 5 Slot 1         X X
Slot 4 Slot 0   X X X X X
Processor 0 Processor 1         X X
Slot 0 Slot 4 X   X X X X
Slot 1 Slot 5         X X
Slot 2 Slot 6   X X X X X
Slot 3 Slot 7         X X