Lenovo 6241, Installation And Service Manual

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and quad rank x8 RDIMM configurations, DDR4 (fourth-generation double-data-rate), registered,
synchronous dynamic random access memory (SDRAM) DIMMs.
• The server also supports 200 GB and 400 GB eXFlash DIMMs. You can use eXFlash DIMMs to utilize
unused DIMM slots to increase high performance storage capabilities. You can use eXFlash DIMMs as
block storage or storage cache. For additional information about eXFlash DIMM installation and
requirements, see “eXFlash DIMMs” on page 50. For more information about supported eXFlash DIMMs,
see Table 7 “Supported eXFlash DDR3 DIMMs” on page 49.
• You use the same installation procedure to remove or install eXFlash DIMMs as you do to remove and
install the other DIMMs in the server.
• Higher capacity (ranked) DIMMs must be installed first. Follow the population sequence for the
appropriate mode.
• The server supports a maximum of 8 ranks (octal-rank) per DDR3 or DDR4 channel.
Note: LR-DIMMs might exceed 8 ranks per channel through rank multiplication.
• Do not mix RDIMMs and LR-DIMMs in the same server.
• The server supports the following DDR3 DIMMs:
Table 5. Supported DDR3 DIMMs
Capacity Density
Ranks
Organization
Form factor
Voltage Type
Bandwidth
(MHz)
4 GB 2 Gb 1R 512Mb x4 Low profile 1.35V RDIMM 1600 MHz
8 GB 4 Gb 1R 1024Mb x4 Low profile 1.35V RDIMM 1600 MHz
16 GB 4 Gb
2R 1024Mb x4 Low profile 1.35V RDIMM 1600 MHz
32 GB 4 Gb 4R 1024Mb x4 Low profile 1.35V LR-DIMM 1600 MHz
64 GB 4 Gb 8R 1024Mb x4 Low profile 1.35V LR-DIMM 1333 MHz
• The server supports the following DDR4 DIMMs:
Table 6. Supported DDR4 DIMMs
Capacity Density
Ranks
Organization
Form factor
Voltage Type
Bandwidth
(MHz)
8 GB 4 Gb 1R 1024Mb x4 Low profile 1.2V RDIMM 2133 MHz
8 GB 4 Gb
1R 1024Mb x4 Low profile 1.2V RDIMM 2400 MHz
16 GB 4 Gb 2R 1024Mb x4 Low profile 1.2V RDIMM 2133 MHz
16 GB 4 Gb 2R 1024Mb x4 Low profile 1.2V RDIMM 2400 MHz
32 GB 8 Gb
2R 2048Mb x4 Low profile 1.2V RDIMM 2133 MHz
32 GB 8 Gb 2R 2048Mb x4 Low profile 1.2V RDIMM 2400 MHz
64 GB 8 Gb 4R 2048Mb x4 Low profile 1.2V LR-DIMM 2133 MHz
64 GB 8 Gb 4R 2048Mb x4 Low profile 1.2V LR-DIMM 2400 MHz
128 GB 8 Gb 8R 2048Mb x4 Low profile 1.2V 3DS RDIMM 2400 MHz
Notes: Considerations when installing 128 GB TruDDR4 Memory (8Rx4 1.2V) PC4-2400-R 2400MHz 3DS
RDIMMs:
– These DIMMs are supported only in systems that have E7-4xxx or E7-8xxx processors installed.
Chapter 2
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Installing optional devices
47