Lenovo ThinkServer TD350, User Manual And Hardware Maintenance Manual

Page: 97 / 226

• Each slot supports 4 GB, 8 GB, 16 GB, and 32 GB double data rate 4 (DDR4) RDIMMs.
• Each slot supports 32 GB and 64 GB DDR4 load reduction dual inline memory modules (LRDIMMs).
• Your server supports up to eight memory modules when one microprocessor is installed and up to 16
memory modules when two microprocessors are installed.
• The minimum system memory is 4 GB (only one microprocessor installed and only one 4 GB RDIMM
installed in the CPU1 DIMMA1 slot).
• The maximum system memory is 1024 GB (two microprocessors installed and one 64 GB LRDIMM
installed in each of the 16 memory slots).
Note: If your server has a 64 GB 2400 MHz memory module installed, ensure that the ambient temperature
does not exceed 35°C (95°F) and all system fans are working properly. If a system fan fails, turn off the server
immediately and replace the system fan as soon as possible to avoid system failure or data loss. To replace
a system fan, refer to Replacing the system fan.
For more information about the memory modules in your specific server model, use the Setup Utility
program. See “Viewing information in the Setup Utility program” on page 57.
For a list of supported ThinkServer memory module options, go to:
http://lenovoquickpick.com/usa/home/thinkserver/rack-and-tower-server
Before installing a memory module, ensure that you observe the following guidelines:
• All memory modules to be installed must be the same type (RDIMM or LRDIMM).
• When you install memory modules with different ranks in one channel, start from the farthest memory slot
in the channel and install the memory module that has the most ranks first.
• If you install 1.35 V memory modules and 1.50 V memory modules into the memory slots for the same
microprocessor, you must configure the working voltage in the BIOS so that all the memory modules
run at 1.50 V.
• When you install memory modules with different frequencies into the memory slots for the same
microprocessor, all the memory modules run at the lowest frequency.
• It is recommended that you install the low-voltage memory modules into the memory slots for the same
microprocessor to ensure low power consumption.
• It is recommended that you install the high-frequency memory modules into the memory slots for the
same microprocessor to ensure high performance.
Chapter 6
.
Replacing hardware
83