Owners Manual

• Phillips #2 screwdriver

• 1/4 inch at head screwdriver

• Torx #T20 screwdriver

• Torx #T30 screwdriver

• Torx #T6, #T8, #T10, and #T15 screwdrivers

• Wrist grounding strap

You need the following tools to assemble the cables for a DC power supply unit.

• AMP 90871-1 hand-crimping tool or equivalent

• Tyco Electronics 58433-3 or equivalent

• Wire-stripper pliers to remove insulation from size 10 AWG solid or stranded, insulated copper wire

NOTE: Use alpha wire part number 3080 or equivalent (65/30 stranding).

System memory

This section provides information on memory population rules, general requirements and instructions on removing and installing memory

modules.

General memory module installation guidelines

NOTE

: Memory congurations that fail to observe these guidelines can prevent your system from booting, stop responding

during memory conguration, or operating with reduced memory.

The system supports Flexible Memory Conguration, enabling the system to be congured and run in any valid chipset architectural

conguration. The following are the recommended guidelines for installing memory modules:

• RDIMMs and LRDIMMs must not be mixed.

• x4 and x8 DRAM based memory modules can be mixed. For more information, see the Mode-specic guidelines section.

• Both dual-rank and single-rank RDIMMs can be populated in each channel.

• Up to two LRDIMMs can be populated per channel regardless of rank count.

• If memory modules with dierent speeds are installed, they will operate at the speed of the slowest installed memory module(s) or

slower depending on system DIMM conguration.

• Populate memory module sockets only if a processor is installed. For single-processor systems, sockets A1 to A8 are available. For dual-

processor systems, sockets A1 to A8 and sockets B1 to B8 are available.

• Populate all the sockets with white release tabs rst, followed by the black release tabs.

• When mixing memory modules with dierent capacities, populate the sockets with memory modules with highest capacity rst. For

example, if you want to mix 4 GB and 8 GB memory modules, populate 8 GB memory modules in the sockets with white release tabs

and 4 GB memory modules in the sockets with black release tabs.

• In a dual-processor conguration, the memory conguration for each processor should be identical. For example, if you populate socket

A1 for processor 1, then populate socket B1 for processor 2, and so on.

• Memory modules of dierent capacities can be mixed provided other memory population rules are followed (for example, 4 GB and 8

GB memory modules can be mixed).

• Mixing of more than two memory module capacities in a system is not supported.

• Populate six memory modules per processor (one DIMM per channel) at a time to maximize performance.

Mode-specic guidelines

Six memory channels are allocated to each processor. The allowable congurations depend on the memory mode selected.

Installing and removing server components