Oracle Sun Fire X4240, Service Manual

Page: 68 / 190

4-6 Sun Fire X4240 Server Service Manual • September 2010
■
Processors with only a single pair of DIMMs must have those DIMMs installed in
that processor’s outside white DIMM slots (6 and 7).
■
Only DDR2 800 Mhz, 667Mhz, and 533Mhz DIMMs are supported.
■
Each pair of DIMMs must be identical (same manufacturer, size, and speed).
Note – DDR2 DIMM names in Integrated LOM messages are displayed with the full
name, such as /SYS/MB/P0/D7.
4.1.2.2 DDR2 DIMM Fillers
DDR2 DIMM fillers are installed in all unoccupied DIMM sockets. All sockets must
be occupied by either a filler or a DDR2 DIMM. When DDR2 DIMMS are added,
remove the fillers. When DDR2 DIMMS are removed, add extra fillers. Always place
fillers in empty sockets.
FIGURE 4-3
Fillers for DDR2 DIMM Slots
4.1.2.3 Single Processor Configuration DDR2 DIMM Placement
If a one processor configuration is ordered, the DDR2 DIMM physical memory layout
requires that all memory must be located next to the installed processor, working
from the outside in. Do not install memory on the side that does not have a processor
installed.