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Green DDR4 ECC UDIMM memory module with black chips

Synology Inc.

Synology Inc. D4EU01-8G DDR4 ECC UDIMM 8GB NAS

SKU CH-480Q-9NVZB MPN D4EU01-8G

Adds 8 GB of DDR4 ECC UDIMM memory to compatible Synology NAS units for improved data integrity

  • TypeAccessory
  • FeaturesRAM DDR4 ECC Unbuffered UDIMM 8GB (D4EU01-8G)
  • ECC protection guards data integrity in your NAS
  • DDR4 unbuffered design fits compatible Synology models
  • 8 GB capacity expands memory for heavier workloads
  • Factory-validated module ensures reliable operation with Synology systems
  • New condition guarantees full manufacturer specifications

Synology DDR4 ECC UDIMM 8GB

This Synology D4EU01-8G module adds 8GB of DDR4 ECC unbuffered memory to compatible Synology NAS units. It is designed for administrators who need error-correcting memory to protect data integrity in always-on storage servers. Buyers without a Synology system that accepts UDIMM ECC modules cannot use this memory.

Thermals noise and power draw

As a standard DDR4 UDIMM, the module draws low power and produces minimal heat during normal NAS operation. It has no moving parts, so it adds no audible noise to the chassis. The ECC function operates transparently without increasing thermal load beyond typical DDR4 specifications.

ECC protection and compatibility

The on-board error-correcting code detects and corrects single-bit memory errors, reducing the risk of silent data corruption in critical workloads. This accessory is validated for specific Synology models; installing it in unsupported hardware will not provide the intended reliability benefits.

Points forts

  • ECC protection guards data integrity in your NAS
  • DDR4 unbuffered design fits compatible Synology models
  • 8 GB capacity expands memory for heavier workloads
  • Factory-validated module ensures reliable operation with Synology systems
  • New condition guarantees full manufacturer specifications

Caractéristiques

BrandSynology
ModelD4EU01-8G
TypeAccessory
FeaturesRAM DDR4 ECC Unbuffered UDIMM 8GB (D4EU01-8G)
Poids d’expédition0.05 kg
Dimensions du colis147 × 97 × 13 mm

Questions sur cet article

How do I install the DDR4 ECC UDIMM into my Synology NAS, and which step do people often get wrong?

Power off the unit, open the chassis, align the notch on the DDR4 ECC UDIMM with the slot key, press firmly until the retention clips click, then close the case; the step most often missed is not pressing hard enough for both clips to engage.

What maintenance or replacement will the DDR4 ECC UDIMM need over time?

The DDR4 ECC UDIMM has no moving parts and requires no scheduled replacement; only reseat the module if the NAS reports memory errors after years of operation.

What is the first limit that appears when the DDR4 ECC UDIMM runs under sustained heavy workloads?

The DDR4 ECC UDIMM will hit its 8 GB capacity ceiling first, forcing the NAS to swap to disk once workloads exceed the installed memory.

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