Acer Memory Identification, Acer AN1600 F1 Network Storage System Specifications, Sparing mode

Acer AN1600 F1 Network Storage System Specifications

•Lockstep Channel mode is the only RAS mode that supports x8 SDDC.

•Channel 3 has no function in these modes.

•Follow the population rules described in independent mode.

•Lockstep mode needs the channel 1 & channel 2 DIMMs to be identical. DIMM slot populations within a channel do not have to be identical but the same DIMM slot location across channel 1 and channel 2 must be the same. DIMM1A and DIMM2A should be the same type, size and manufacturer. DIMM1B and DIMM2B memory should be the same type, size and manufacturer. DIMM1C and DIMM2C memory should be the same type, size and manufacturer.

•Same rules apply to CPU2.

•Please refer to the User Guide for complete population rules for both single and dual processor configurations.

Sparing mode:

•In sparing mode, if the system detects degrading memory, the data in the failed channel will be copied to the spare channel. The failed channel is then isolated and the spare channel becomes active. Any uncorrectable error detected before the isolation will cause the system to stop normal operation.

•Channel 3 is the spare channel. Therefore, the effective size will be reduced by one-third.

•Follow the population rules described in independent mode.

•Sparing mode needs all three channels to utilize identical DIMMs. 1A, 2A and 3A should be the same type, size and manufacturer. 1B, 2B and 3B memory should be the same type, size and manufacturer. 1C, 2C and 3C memory should be the same type, size and manufacturer.

•Same rule is applied to CPU2.

•Please refer to the User Guide for complete population rules for both single and dual processor configurations.

Memory Identification

Generally, there is memory information printed on the label of the DIMM, but different vendors may have different formats. For example:

4GB 2Rx4 PC3-10600R xx xx xxx

1.Density

∙2GB, 4GB, 8GB, 16GB

∙Intel® Xeon® 5600 series processors support DIMMs organized by 1Gb, 2Gb or 4Gb DRAM chips

2. Rank

∙1R = Single Rank

∙2R = Dual Rank

∙4R = Quad Rank

3. Bit Organization

∙This platform supports x4 and x8

∙Note: It’s not recommend to mix DIMMs with different bit organizations in one system

4. Speed

∙PC3 – 6400 => DDR3- 800

∙PC3 – 8500 => DDR3- 1066

∙PC3 – 10600 => DDR3- 1333

∙PC3 – 12800 => DDR3- 1600

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