HP ProLiant DL360e Configuring and using DDR3 memory with HP ProLiant Gen8 Ser - Page 10

Figure 2: HP DDR3 Memory Part Number Decoder Populating memory in HP ProLiant Gen8 servers HP ProLiant Gen8 memory slot configurations The latest HP ProLiant Gen8 servers feature one of two memory slot configurations - either 16 or 24 memory slots total. For servers using the Intel® Xeon® E5-2600 series processor family, the configurations make use of all 8 memory channels, delivering the maximum performance possible. Population rules for HP ProLiant Gen8 servers For optimal performance and functionality, it is necessary to adhere to the following population rules. Violations may result in reduced memory capacity, or error messages during boot. Rules for populating processors and DIMM slots • Install DIMMs only if the corresponding processor is installed. • If only one processor is installed in a two-processor system, only half of the DIMM slots are available. • To maximize performance, it is recommended to balance the total memory capacity between all installed processors and load the channels similarly whenever possible. • When two processors are installed, balance the DIMMs across the two processors. • White DIMM slots denote the first slot to be populated in a channel. • Place the DIMMs with the highest number of ranks in the white slot when mixing DIMMs of different ranks on the same channel. Rules for DIMM types • Do not mix UDIMMs, RDIMMs, or LRDIMMs. 10