Dell PowerEdge M420 Hardware Owner's Manual - Page 186

Figure 3-18. Memory Locations - PowerEdge M605 A1 A2 A3 A4 B4 B3 General Memory Module Installation Guidelines - PowerEdge M605 To ensure optimal performance of your system, observe the following guidelines when installing your system memory: • Memory modules must be installed in pairs of identically-sized DIMMs, beginning with slots A1 and A2 (processor 1) and B1 and B2 (processor 2, if installed). These slots are marked by white ejector tabs. • All memory modules in the blade must be identical in speed and technology. The memory modules in each pair must be the same size. • In two-processor configurations, memory must be installed in the same configuration (symmetrically) for both processors. • If pairs of memory modules of different sizes are installed, the larger capacity memory modules must be installed in the lower numbered slots. • Memory sparing is supported if four (single-processor systems) or eight (dual-processor systems) memory modules are installed. Table 3-10 and Table 3-11 show examples of supported single- and dualprocessor memory configurations. 186 Installing Blade Components