Valid Memory Configurations; Dimm Slot Layout; Dimm Load Order - HP 9000 Integrity rp8440 Installation Manual

Valid Memory Configurations

The first cell must have one DIMM pair loaded in slots 0A/0B. The server can support as little
as 2 GB of main memory using two 1 GB DIMMs installed on one of the cell boards and as much
as 512 GB by filling all 16 DIMM slots on all four cell boards with 8 GB DIMMs.
The following rules explain the memory configuration:
1. DIMMs must be loaded in pairs (same size within a pair).
2. DIMM pairs must be loaded in slot order (0A/0B, 1A/1B, 2A/2B, ...)
3. Largest DIMMs must be loaded first followed by progressively smaller DIMM module sizes.
A paired set of DIMMs is called a rank. DIMMs in a rank must be of the same capacity. See
Table 1-3 and
A quad is a grouping of four DIMMs
are recommended. Adding a rank enables a dedicated DDR-II bus on a cell to increase the amount
of usable memory bandwidth available. Available memory is proportional to the amount of
memory installed.
Table 1-3 DIMM Load Order
Number of DIMMs Installed
2 DIMMs = 1 rank
4 DIMMs = 2 rank
6 DIMMs = 3 rank
8 DIMMs = 4 rank
10 DIMMs = 5 rank
12 DIMMs = 6 rank
14 DIMMs = 7 rank
16 DIMMs = 8 rank
Figure 1-9 DIMM Slot Layout
Figure 1-9 for DIMM load order and layout on the cell board.
Action Taken
Install first
Add second
Add third
Add fourth
Add fifth
Add sixth
Add seventh
Add last
(Figure 1-9). Configurations with 8 or 16 DIMM slots loaded
DIMM Location on Cell
Board
0A and 0B
1A and 1B
2A and 2B
3A and 3B
4A and 4B
5A and 5B
6A and 6B
7A and 7B
Quad Location
Quad 2
Quad 1
Quad 3
Quad 0
Quad 2
Quad 1
Quad 3
Quad 0
Detailed Server Description 23