HP Integrity rx1620 Installation Guide, Second Edition - HP Integrity rx1620 - Page 35
DIMM Locations, DIMM Loading Order
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Figure 3-21 DIMM Loading Order Rear Installing and Configuring Installing Additional Memory Front 2A Pair 4 1A 2B Pair 2 1B 3A Pair 3 0A 3B Pair 1 0B DIMM Locations Eight DIMM slots are provided on the system board. These DIMM slots are designated in ordered pairs. 0A and 0B, 1A and 1B, 2A and 2B, and 3A and 3B. DIMM sizes within each pair must match. Loading order for the DIMM slots is sequential with the loading order being slot 0, slot 1, slot 2 and slot 3. The memory subsystem supports chip spare functionality. Chip spare enables an entire SDRAM chip on a DIMM to be bypassed (logically replaced) in the event that a multi-bit error is detected on that SDRAM. In order to use the chip spare functionality, only DIMMs built with x4 SDRAM parts can be used, and these DIMMs must be loaded in quads (2 DIMMs per memory cell, loaded in the same location in each memory cell). Chapter 3 35
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