Dell PE2950服务器的最大内存问题

恩，我的意思是说Dell PE2950第三代主板能支持的最大内存，物理内存:emotion-1:

你好！PE2950支持的最大内存为64G。官方部份资料供参考：

PowerEdge 2950 Memory Population Rules

• A minimum of two identical FBDs must installed.
• DIMM sockets must be populated by lowest number first in pairs. Example: Populate socket 1 and 2 and then sockets 3 and 4.
• FBDs must be installed in pairs of matched memory size, speed, and technology, and the total number of FBDs in the configuration must total 2,4, or 8.
• For best system performance, all FBDs should be identical memory size, speed, and technology.
• Memory sparing and memory mirroring require 8 FBDs, and all FBDs must be of identical memory size, speed, and technology.
• Memory sparing and memory mirroring cannot be implemented at the same time.
• Use only qualified FBDs. FBDs can be either single-ranked or dual-ranked. FBDs marked with a 1R are single-ranked and modules marked with a 2R are dual-ranked.

NOTE: A single FDB installed in channel 0 will allow the system to POST. A single FBD configurations not supported and should only be used for troubleshooting purposes.

NOTE:

The PowerEdge 2950 has a memory shroud to prevent overheating when cover is taken off for troubleshooting. Running the system without the cover is not recommended and should only be done when absolutely neccessary, such as when troubleshooting procedure require cover removal.

NOTE: Never remove the memory cooling shroud without first powering down the system.

The following table outlines the supported memory configurations for the PowerEdge 2950.

NOTE: In order for 8 GB DIMMs to be use the BIOS must be at 2.3.1 or later 
The BMC Firmware must be at 2.10 or later. 8 G DIMMS are supported on MLK III only.

Non-Optimal Memory Configurations

System performance can be affected if your memory configuration does not conform to the preceding installation guidelines. Your system may issue an error message during startup stating that your memory configuration is non-optimal.

Memory Sparing Support

The system supports memory sparing if eight identical memory modules are installed in the system. The memory sparing feature must be enabled in the System Setup program and can be used only if memory mirroring is not enabled. Memory sparing allocates four ranks of DIMM memory to the spare bank. These four ranks consist of the first rank of memory in DIMM sockets 1 through 4. For single-rank DIMMs, the entire capacity of the four DIMMs is allocated to sparing whereas for dual-rank DIMMs, only half of the four-DIMM capacity is allocated to sparing.

The following table shows how memory sparing splits the available and spared memory in each of the single-ranked memory module and dual-ranked memory module combinations.

Memory Mirroring Support

The system supports memory mirroring if eight or twelve identical memory modules are installed in the system. Mirroring must be enabled in the System Setup program and can be used only if memory sparing is not enabled. In a mirrored configuration, the total usable system memory is one-half of the total installed memory.

Branches and Channels

The memory module sockets are divided into two equal branches (0 and 1). Each branch consists of two channels:

• Channel 0 and channel 1 are in branch 0.
• Channel 2 and channel 3 are in branch 1.

Each channel consists of three memory module sockets:

• Channel 0 contains DIMM_1 and DIMM_5.
• Channel 1 contains DIMM_2 and DIMM_6.
• Channel 2 contains DIMM_3 and DIMM_7.
• Channel 3 contains DIMM_4 and DIMM _8.

The following diagram shows the PowerEdge 2950 memory banks and memory branches.