Registered Dimms (Rdimms) - Lenovo ThinkServer TS200 Hardware Maintenance Manual

Table 10. UDIMMs population rule for dual-channel symmetric mode
DIMMs DIMMs
connector 1 connector 2
populated empty
populated empty
populated populated

Registered DIMMs (RDIMMs)

The following notes provide information that you must consider when you install RDIMMs (see "System-board
internal connectors" on page 131 for the location of the DIMM connectors):
• The memory channels run at the fastest common frequency of the installed DIMMs.
• Do not use both RDIMMs and UDIMMs in the same server.
• The server supports up to three single-rank, dual-rank, or quad-rank RDIMMs per channel.
• The RDIMM options that are available for the server are 1 GB, 2 GB, 4 GB, and 8 GB (when available)
memory DIMMs.
• You can install a maximum of 32 GB of memory in the server when you use RDIMMs.
• The following table lists the supported RDIMM population.
Table 11. Supported RDIMM population per channel
DIMMs slots per
channel
3
3
3
3
3
• The following table lists the maximum DIMM population using ranked RDIMM.
Table 12. Maximum memory population using ranked RDIMMs (depending on your model)
Number of RDIMMs
6
6
6
4
4
6
4
• The following table lists the RDIMM memory population rule to optimize the system performance.
DIMMs
connector 3
empty
empty
empty
DIMMs installed in
each channel DIMM type
1 Registered DDR3
ECC
2 Registered DDR3
ECC
3 Registered DDR3
ECC
1 Registered DDR3
ECC
2 Registered DDR3
ECC
DIMM type
single-rank RDIMMs
single-rank RDIMMs
dual-rank RDIMMs
dual-rank RDIMMs
quad-rank RDIMMs
dual-rank RDIMMs
quad-rank RDIMMs
DIMMs DIMMs
connector 4 connector 5
empty empty
populated empty
populated populated
DIMM speed
1066, 1333
1066, 1333
800
1066
800
DIMM size
1 GB
2 GB
2 GB
4 GB
4 GB
4 GB
8 GB (when available)
Chapter 6
DIMMs
connector 6
empty
empty
empty
Ranks per DIMM
(any combination)
single-rank,
dual-rank
single-rank,
dual-rank
single-rank,
dual-rank
quad-rank
quad-rank
Total memory
6 GB
12 GB
12 GB
16 GB
16 GB
24 GB
32 GB
149
.
Replacing FRUs