User`s guide

DIMM Slot Population
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DIMM Slot Population
This section describes how you populate the DIMM slots for one or two CPUs with the various
DIMM types.
Note: The ISS3500 has 12 240-pin DIMM slots that support up to 96 GB of DDR3 Registered
ECC or up to 24 GB of Unbuffered ECC/Non ECC 1333 MHz/1066 MHz/800 MHz SDRAM
modules. Do not mix memory modules of different speeds and sizes.
DIMM Module Placement for Optimal Performance
Table 4-1, Table 4-2, and Table 4-3 show the proper placement of DIMMs with only CPU1
installed, only CPU2 installed, and both installed, respectively.
Table 4-1 DIMM Population with only CPU1 Installed
Branch 0 Branch 1 Branch 2
3 DIMMs P1 DIMM1A P1 DIMM2A P1 DIMM3A
6 DIMMs P1 DIMM1A P1 DIMM1B P1 DIMM2A P1 DIMM2B P1 DIMM3A P1 DIMM3B
Table 4-2 DIMM Population with only CPU2 Installed
Branch 0 Branch 1 Branch 2
3 DIMMs P2 DIMM1A P2 DIMM2A P2 DIMM3A
6 DIMMs P2 DIMM1A P2 DIMM1B P2 DIMM2A P2 DIMM2B P2 DIMM3A P2 DIMM3B
Table 4-3 DIMM Population with Both CPU1 and CPU2 Installed
CPU1 CPU2
Branch 0 Branch 1 Branch 3 Branch 0 Branch 1 Branch 3
6 DIMMs 1A 2A 3A 1A 2A 3A
12 DIMMs1A1B2A2B3A3B1A1B2A2B3A3B