Installation Guide, Seventh Edition - HP Integrity rx7620 Servers

Chapter 1
Introduction
Detailed HP Integrity rx7620 Server Description
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A quad seen in Figure 1-9 is a grouping of four DIMMs. Configurations with 8 or 16 DIMM slots loaded are
recommended. The DIMM sizes in a quad can be different but the DIMMs in an echelon must be the same
size.
Figure 1-9 DIMM Slot Layout
Table 1-4 DIMM Load Order
Number of DIMMs
Installed
Action Taken
DIMM Location
on Cell Board
Quad Location
2 DIMMs = 1 Echelon Install First 0A and 0B Quad 0
4 DIMMs = 2 Echelons Add Second 1A and 1B Quad 1
6 DIMMs = 3 Echelons Add Third 2A and 2B Quad 2
8 DIMMs = 4 Echelons Add Fourth 3A and 3B Quad 3
10 DIMMs = 5 Echelons Add Fifth 4A and 4B Quad 0
12 DIMMs = 6 Echelons Add Sixth 5A and 5B Quad 1
14 DIMMs = 7 Echelons Add Seventh 6A and 6B Quad 2
16 DIMMs = 8 Echelons Add Last 7A and 7B Quad 3
Rear Edge of Cell Board
Front Edge of Cell Board
DIMM 3B
DIMM 7B
DIMM 7A
DIMM 3A
DIMM 2B
DIMM 6B
DIMM 6A
DIMM 2A DIMM 0A
DIMM 5A
DIMM 4A
DIMM 4B
DIMM 0B
DIMM 1A
DIMM 5B
DIMM 1B
QUAD 3
QUAD 2
QUAD 1
QUAD 0
(Plugs into the Server Backplane)