For servers with eighteen (18) memory slots:

DIMM slots that are white should be populated first

Do not mix Unbuffered memory (UDIMMs) with Registered memory (RDIMMs)

Do not install DIMMs if the corresponding processor is not installed

If only one processor is installed in a 2 CPU system, only half of the DIMM slots are available

To maximize performance, balance the total memory capacity between all installed processors

It is not required, but it is recommended to load the channels similarly if possible

User can only have up to eight (8) ranks installed per channel

When using quad-rank DIMMs, only 2 DIMMs can be installed per channel. The combinations are as follows: 2 quad-rank DIMMs,1 quad-rank DIMM + 1 dual-rank DIMM or 1 quad-rank DIMM + 1 single-rank DIMM

User can only install two quad-rank DIMMs per channel

User can only install two UDIMMs per channel; if available, the third slot in the channel must remain empty

Populate DIMMs from heaviest load (quad-rank) to lightest load (single-rank) within a channel

Heaviest load (DIMM with most ranks) within a channel goes furthest from the chipset

For memory mirroring mode, channel 3 must be unpopulated. Channels 1 and 2 are populated identically

For lock-step mode, channel 3 must be unpopulated. DIMMs in channels 1 and 2 will be installed in pairs. The paired slots will be1,4; 2,5; 3;6 on a 3DPC system or 1,4; 2,5; on a 2DPC system

Low Voltage DIMMs can only be used with Intel Xeon processor 5600 series processors

If mixing DIMM voltage is a requirement, please note that the DIMMs will run at 1.5 V since all 1.35 V are capable of supporting1.5 V operations

*2DPC: LV runs at 1066, Std voltage runs at 1333

**3DPC: LV/Std voltage runs at 800

Mixing DIMM speeds is allowed, but the system processor speed rules always override the DIMM capabilities

If user do mix DIMM speeds, the memory bus will default to the minimum clock rate of all DIMMs in the system - even if the slowerDIMM is on the other processor

If user install 1x 1066 MHz DIMM in channel 1 and 1x 1333 MHz DIMM in channel 2, user still run at 1066 MHz

If user install 1x 1066 MHz DIMM in channel 1 and 5x 1333 MHz DIMMs with 1 DIMM Per Channel (DPC) in each of the other channels,user run at 1066 MHz

If user install 3DPC in one channel (if applicable) and 1DPC in all other channels, user run at 800 MHz

References to the above MHz speeds are for the various speeds of DDR3 DIMMs; 1333 refers to DDR3-1333, etc.

Population order; start with 'A' first, 'B' second, 'C' third, etc.

6GB, consisting of three (3) 2GB dual-rank PC3-10600 RDIMMs

54GB, consisting of three (3) 2GB RDIMMs plus six (6) 8GB RDIMMs

72GB, consisting of nine (9) 8GB dual-rank PC3-8500 RDIMMs

12GB, consisting of six (6) 2GB dual-rank PC3-10600 UDIMMs

384GB, consisting of twelve (12) 32GB quad-rank PC3L-8500 RDIMMs