HP Integrity rx5670 Hardware Installation Guide - HP Integrity rx5670 (A6837B/ - Page 28
Memory Performance Considerations, Removing a Memory Extender Board, addition
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Installing Additional Components Installing Processors and Memory Memory must be installed in groups of four identical DIMMs. For a minimally loaded system, DIMMs will be loaded in slots 0A, 0B, 0C, and 0D. This collection of slots is referred to as Rank 0. The next set of DIMMs loaded are installed into slots 1A, 1B 1C, and 1D. The process of loading additional DIMMs continues in a similar manner through the last set of DIMMs, which is installed in slots 5A, 5B, 5C, and 5D. Memory Performance Considerations For best memory performance, install a second memory extender board and distribute DIMM installation between them. Install DIMMs in Rank 0 of memory extender board MX0, then install DIMMs in Rank 0 of memory extender board MX1. Memory performance increases as the difference in memory installed between memory board extenders is decreased. Optimal memory performance is obtained when the differential is 0. In addition, memory performance will also be increased by loading the highest capacity DIMMs in the lower ranks. Removing a Memory Extender Board To remove a memory extender board, perform the following steps: 1. Press the latch on the extraction levers located on each side of the memory extender board. 2. Pull up on the extraction levers to free the memory extender board from the socket located on the system baseboard. 28 Chapter 2