Lenovo System x3850 X6 Installation And Service Manual page 61

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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

• The server supports the following DDR4 DIMMs:

Table 6. Supported DDR4 DIMMs

Notes: Considerations when installing 128 GB TruDDR4 Memory (8Rx4 1.2V) PC4-2400-R 2400MHz 3DS

– These DIMMs are supported only in systems that have E7-4xxx or E7-8xxx processors installed.

Organization

Organization

Installing optional devices

Troubleshooting

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