Owners Manual

General memory module installation guidelines
Your system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset
architectural configuration. The following are the recommended guidelines for optimal performance:
● Memory modules must be of the same type and capacity for all the nodes.
● At least one memory module must be populated for each node.
● The memory configuration for each node must be identical. For example, if you populate socket A_A1 for node A, then
populate socket B_A1 for node B, socket C_A1 for node C, and socket D_A1 for node D.
● Mixing of memory modules is not supported.
Sample memory configurations
The following table shows sample memory configurations that follow the appropriate memory guidelines stated in this section.
NOTE: 1R and 2R in the following table indicate single- and dual-rank UDIMMs respectively.
Table 11. Memory configurations
Sled Capacity (in
GB)
DIMM Size (in
GB)
Number of
DIMMs
Organization and
Speed
DIMM Slot Population
16 4 4
1R x8, 1600 MT/s
A_A1, B_A1, C_A1, D_A1
24 4 6
1R x8, 1600 MT/s
A_A1, A_A2, B_A1, B_A2, C_A1, D_A1
32 4 8
1R x8, 1600 MT/s
A_A1, A_A2, B_A1, B_A2, C_A1, C_A2, D_A1,
D_A2
32 8 4
2R x8, 1600 MT/s
A_A1, B_A1, C_A1, D_A1
48 8 6
2R x8, 1600 MT/s
A_A1, A_A2, B_A1, B_A2, C_A1, D_A1
64 8 8
2R x8, 1600 MT/s
A_A1, A_A2, B_A1, B_A2, C_A1, C_A2, D_A1,
D_A2
Removing memory modules
NOTE:
The memory modules are hot to touch for some time after the system has been powered down. Allow the memory
modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components
or metallic contacts on the memory module.
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that came with the product.
1. Turn off the nodes using the operating system commands, or the iDRAC, or the CMC.
The sled is powered off when all the nodes are turned off.
2. Remove the sled from the enclosure.
3. Locate the appropriate memory module socket(s).
4. To release the memory-module from the socket, simultaneously press the ejectors on both ends of the memory module
socket.
32
Installing sled components