Skip to main content

2.1.3 Internal Units


2.1.3 Internal Units
Figure 2-3 shows the types and mounting locations of internal units.
Figure 2-3  Internal Units
Figure 2-3  Internal Units
Location No. Unit
1 CPU memory unit lower (CMUL) (*2)
2 CPU memory unit upper (CMUU) (*1) (*2)
3 Backplane unit (BPU)
4 PSU backplane unit (PSUBPU)
*1 When purchased with no CMUU mounted, the SPARC M12-2/M12-2S has a CMU filler unit mounted.
*2 The CMUL and the CMUU together are collectively called the CMU.
Shown in parentheses is an abbreviated name. Hereinafter, each component is represented by its abbreviated name.
Figure 2-4 shows the CMUL and CMUU removed from the SPARC M12-2/M12-2S.
You can access the CMUL after removing the FANBPU, HDDBPU, and PCICS.
You can access the CMUU after removing the FANBPU and HDDBPU.
In the case of the SPARC M12-2S, you can access both the CMUU and CMUL after removing the XBU.
Figure 2-4  CMU Removed From the Server
Figure 2-4  CMU Removed From the Server
Location No. Unit
1 CPU memory unit lower (CMUL)
2 CPU memory unit upper (CMUU)
3 Memory (MEM)
Shown in parentheses is an abbreviated name. Hereinafter, each component is represented by its abbreviated name.
Note - You cannot replace the CPU alone.