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SPARC T8-1 Server Service Manual

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Updated: January 2022
 
 

Memory Riser and DIMM FRU Names

The server can contain 16 DIMMs. Eight DIMMs are installed on the motherboard. An optional eight DIMMs can be installed on two memory risers, mounted on the motherboard above the initial DIMMs. Four DIMMs are installed on each memory riser.

Labels on the transparent airflow cover identify the naming of memory risers and DIMMs.

image:Figure showing the name of each DIMM.

DIMM FRU names are based on the location of the DIMM on the motherboard or on one of the two memory risers. For example, the full FRU name for the DIMM slot on the motherboard farthest from the power supplies is /SYS/MB/CM/CMP/BOB00/CH0.


Note -  DIMM names that include CH0 have black ejectors and DIMM names that include CH1 have white ejectors.
Physical Location (Seen From Rear)
Memory Riser or DIMM FRU Name
Left Memory Riser
1
2
3
4
/SYS/MB/CM/CMP/MR1 (riser)
/SYS/MB/CM/CMP/MR1/BOB11/CH0
/SYS/MB/CM/CMP/MR1/BOB11/CH1
/SYS/MB/CM/CMP/MR1/BOB31/CH0
/SYS/MB/CM/CMP/MR1/BOB31/CH1
Left motherboard
5
6
7
8
/SYS/MB/CM/CMP/BOB30/CH0
/SYS/MB/CM/CMP/BOB30/CH1
/SYS/MB/CM/CMP/BOB20/CH0
/SYS/MB/CM/CMP/BOB20/CH1
Right motherboard
9
10
11
12
/SYS/MB/CM/CMP/BOB10/CH1
/SYS/MB/CM/CMP/BOB10/CH0
/SYS/MB/CM/CMP/BOB00/CH1
/SYS/MB/CM/CMP/BOB00/CH0
Right memory riser
13
14
15
16
/SYS/MB/CM/CMP/MR0 (riser)
/SYS/MB/CM/CMP/MR0/BOB01/CH1
/SYS/MB/CM/CMP/MR0/BOB01/CH0
/SYS/MB/CM/CMP/MR0/BOB21/CH1
/SYS/MB/CM/CMP/MR0/BOB21/CH0

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