Dell PowerEdge M420 Hardware Owner's Manual - Page 168

• 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 16 memory modules are installed. (Memory mirroring is not supported.) Table 3-5 shows examples of supported memory configurations. CAUTION: Memory module blanks must be installed in unoccupied memory sockets to maintain proper cooling airflow. Table 3-5. Examples of PowerEdge M805 Memory Configurations Total System Memory 4 GB 8 GB 8 GB 12 GB Memory Modules Number and Size Four 1 GB Eight 1 GB Four 2 GB Twelve 2 GB 16 GB Sixteen 1 GB 16 GB 16 GB 24 GB Eight 2 GB Four 4 GB Twelve 2 GB 32 GB Sixteen 2 GB 32 GB 48 GB Eight 4 GB Twelve 4 GB 64 GB* Sixteen 4 GB Memory Module Locations A1, A2, B1, B2 A1, A2, A3, A4, B1, B2, B3, B4 A1, A2, B1, B2 A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6 A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8 A1, A2, A3, A4, B1, B2, B3, B4 A1, A2, B1, B2 A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6 A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8 A1, A2, A3, A4, B1, B2, B3, B4 A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6 A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8 168 Installing Blade Components