Owners Manual
Figure 33. Installing a drive into the drive carrier
Hard drive backplane
Your system supports 2.5 inch (x24) SAS/SATA backplane.
System memory
The system supports DDR4 registered DIMMs (RDIMMs) and load reduced DIMMs (LRDIMMs). System memory holds the instructions
that are executed by the processor.
NOTE
: MT/s indicates DIMM speed in MegaTransfers per second.
Memory bus operating frequency can be 2666 MT/s, 2400 MT/s, or 2133 MT/s depending on the following factors:
• DIMM type (RDIMM and LRDIMM)
• System prole selected (for example, Performance Optimized, or Custom [can be run at high speed or lower])
• Maximum supported DIMM frequency of the processors
The XC940 Series system (without PEM) contains 24 memory sockets split into two sets of 12 sockets, one set per processor. Each 12-
socket set is organized into six channels. In each channel, the release tabs of the rst socket are marked white, and the second socket
black.
The XC940 Series system (with PEM) contains 48 memory sockets split into four sets of 12 sockets, one set per processor. Each 12-socket
set is organized into six channels. In each channel, the release tabs of the rst socket are marked white, and the second socket black.
Installing and removing system components
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