Sun Microsystems X6270 manual Dimm Population Rules

Models: X6270

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Figure Legend CPU and DIMM Layout

CPU 1 location

Channel locations for CPU 0

Three channels per CPU with each channel containing three color-coded DIMM slots (black, white, and blue)

Channel locations for CPU 1

Three channels per CPU with each channel containing three color-coded DIMM slots (blue, white and black).

P0:

DIMM slot numbering per CPU; with D8 as the farthest slot away from CPU

P1:

DIMM Population Rules

The DIMM population rules for the Sun Blade X6270 Server Module are as follows:

1.Do not populate any DIMM socket next to an empty CPU socket. Each processor contains a separate memory controller.

2.Each CPU can support a maximum of:

Nine dual-rank (DR) or single-rank (SR) DIMMs; or

Six quad-rank (QR) DIMMs with two per memory channel; or

Three QR DIMMs with one per channel and three DR or SR DIMMs.

3.Populate DIMMs by location according to the following rules:

16 Sun Blade X6270 Server Module Installation Guide • December 2009

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Sun Microsystems X6270 manual Dimm Population Rules