Dell PowerEdge M620 Hardware Owner's Manual - Page 196
Memory Sparing Support - PowerEdge M710HD
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Memory Sparing Support - PowerEdge M710HD NOTE: For memory sparing support, your system must be installed with Intel Xeon 5600 series processors. Memory sparing (spare bank) is supported in systems that have one of the memory configurations shown in Table 3-9. The memory sparing feature must also be enabled in the Memory Information screen of the System Setup program. See "Memory Settings Screen" on page 140. To use memory sparing, you must disable node interleaving. Independent Channel Mode (Optimizer Mode) - PowerEdge M710HD In this mode, all three channels are populated with identical memory modules. This mode permits a larger total memory capacity, but does not support the reliability features of the other modes. To enable this mode, select the Optimizer option on the Memory Settings screen of the System Setup program. See "Memory Settings Screen" on page 140. A minimal single-channel configuration of one 1 GB memory module per processor is also supported in this mode. Table 3-9. Examples of PowerEdge M710HD Memory Configurations Total Physical Memory 1 GB 2 GB 2 GB 2 GB 4 GB 4 GB Memory Modules Memory Module Processors Memory - Number and Locations Mode Type Available Memory One 1 GB A1 UDIMM One Independent 1 GB channel Two 1 GB UDIMMs A2, A3 One Mirroring 1 GB Two 1 GB UDIMMs A2, A3 One Advanced 2 GB ECC Two 1 GB UDIMMs A1, B1 Two Independent 2 GB channel Two 2 GB UDIMMs A2, A3 One Mirroring 2 GB Two 2 GB UDIMMs A2, A3 One Advanced 4 GB ECC 196 Installing Blade Components