Mirroring mode, Lockstep mode | Acer AR380 F1 specs

Acer AR380 F1 specifications

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Dual processor configuration guide

NOTE: Quad Rank DIMMs and Unbuffered DIMMs can only use a maximum of 6 slots per CPU (12 slots total)

DIMM

CPU 1

CPU 2

3 DIMM per channel configuration is only available for single/dual rank RDIMM. UDIMM and Quad rank RDIMM can only support 2 DIMM per channel.

* support depends on 8GB/16GB DIMM available

Mirroring mode:

•For mirroring mode, the memory contains a primary image and a copy of the primary image. Therefore, the effective size of memory is reduced by at least one-half.

•Channel 3 is no function and can’t be populated in this mode.

•Follow the population rules described in independent mode.

•Mirroring mode needs the channel 1 & channel 2 with identical DIMM. 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 rule is applied to the CPU2.

•3 DIMM per channel configuration is only available for single/dual rank RDIMM.

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

Lockstep mode:

•In Lockstep Channel Mode, each memory access is a 128-bit data access that spans Channel 1 and Channel 2. This is done to support SDDC for DRAM devices with 8-bit wide data ports. The same

AR380 F1 specifications

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