General Memory Module Installation Guidelines; Pautas Específicas De Los Modos; Ecc Avanzado (Lockstep) - Dell PowerEdge R920 El Manual Del Propietario

Tipo de Módulos DIMM
módulo distribuidos/
DIMM canal (DPC)
2
3

General Memory Module Installation Guidelines

Your system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset
architectural configuration. The following are the recommended guidelines for best performance:
• RDIMMs and LRDIMMs must not be mixed.
• x4 and x8 DRAM based DIMMs can be mixed. For more information, see Mode-Specific Guidelines.
• Populate only one quad-rank RDIMM per channel. The quad-rank RDIMM must be populated in the first slot with
white release levers, while the second and third slots remain empty.
• Populate up to three dual- or single-rank RDIMMs per channel.
• Up to three quad rank LRDIMMs can be populated per channel.
• Up to three LRDIMMs can be populated regardless of rank count.
• Populate DIMM sockets only if a processor is installed. For dual-processor systems, sockets A1 to A12, B1 to B12
and sockets C1 to C12, D1 to D12 are available. Each processor requires a minimum of 2 DIMMs, which must be
identical.
• Populate all sockets with white release lever first, then black, and then green.
• Populate the sockets by highest rank count in the following order — first in sockets with white release levers, then
black, and then green. For example, if you want to mix quad-rank and dual-rank LRDIMMs, populate quad-rank
LRDIMMs in the sockets with white release tabs and dual-rank LRDIMMs in the sockets with black release tabs.
• The memory configuration for each processor should be identical. For example, if you populate socket A1 and B1 for
processor 1, then populate socket C1 and D1 for processor 2, and so on.
• Memory modules of different sizes can be mixed provided that other memory population rules are followed (for
example, 4 GB and 8 GB, and 16 GB memory modules can be mixed).
• Populate four DIMMs per processor (one DIMM per channel) at a time to maximize performance.
• If memory modules with different speeds are installed, they will operate at the speed of the slowest installed
memory module(s) or slower depending on system DIMM configuration.
Pautas específicas de los modos
Cada procesador tiene asignados cuatro canales de memoria. Las configuraciones posibles dependen del modo de
memoria seleccionado.
NOTA: Se pueden mezclar módulos DIMM de DRAM x4 y x8 para admitir características RAS. Sin embargo, se
deben seguir todas las pautas específicas para RAS. Los módulos DIMM de DRAM x4 conservan SDDC (Single
Device Data Correction, corrección de datos de dispositivo único) en el modo optimizado (canal independiente) de
memoria. Los módulos DIMM de DRAM x8 requieren de ECC avanzada para lograr SDDC.
Las siguientes secciones incluyen pautas adicionales sobre la ocupación de las ranuras en cada modo.

ECC avanzado (Lockstep)

El modo de ECC avanzado amplía SDDC de módulos DIMM basados en DRAM x4 tanto a DRAM x4 y x8. Esta ampliación
supone protección ante fallos de chip DRAM sencillos durante el funcionamiento.
Pautas para la instalación de memoria:
48
Tamaño del Frecuencia de funcionamiento (en MT/s)
módulo DIMM
DDR3 (1,5 V)
32 GB / 64 GB 1 600
32 GB / 64 GB 1333 y 1066
Banco/canal DIMM
máximo
DDR3 (1,35 V)
1 333 Rango cuádruple físico
No aplicable Rango cuádruple físico