HP rp7405 User Guide, Third Edition - hp rp7405/rp7410 Servers - Page 54

Installation Unpacking the Server Processors Each cell board can hold up to four processors. Processor slots are numbered 0-3. Install processors in ascending order: slot 0, 1, 2, and 3. It is not necessary to balance the number of processors across both cell boards. Figure 2-18 Cell Board (Two processors and CC Shown) Processor 1 Processor 0 Cell Controller Processor 3 Processor 2 DIMMs Each cell board can hold up to four quads (or ranks) of DIMMs. A rank is a group of four DIMMs. Each DIMM within a rank must be the same capacity. The slots within each rank are numbered a,b,c,d. Install DIMMs in ascending order: rack 0, 1, 2 and 3. It is not necessary to balance the number of DIMMs across both cell boards. For Example: one rank = slots 0a, 0b, 0c and 0d. Valid Memory Configurations DIMMs must be loaded in sets of four at specific locations. For best performance, loading sets of 8 DIMMs is recommended. Table 2-1 hp rp7405/rp7410 DIMMs DIMM Capacity 512 Mbyte 1G Byte Total Capacity 16 GBytes 32 Gbytes Memory Component Density 128 Mbit 256 Mbit The hp rp7405/rp7410 is capable of supporting as little as 2 Gbytes of main memory using four 512 MByte DIMMs and one cell board and as much as 32 Gbytes using all 16 DIMM slots on both cell boards with 1GB DIMMs. 32 Chapter 2