Memory Specifications

• Capacity: 8 GB
• Model: D4EC-2666-8G
• Configuration: 1 x 8 GB module
• Type: DDR4 ECC UDIMM (Unbuffered DIMM)
• Speed: 2666 MHz
• Form Factor: 288-pin DIMM
• Voltage: 1.2 V
• ECC (Error-Correcting Code): Yes
• Buffered/Registered: Unbuffered
• Compatibility: Designed specifically for Synology NAS devices, including:
  • SA series: SA3200D
  • UC series: UC3200
  • RS series: RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+, RS1619xs+, RS3618xs, RS4017xs+, RS3617xs+, RS3617RPxs

Technical Advantages

• ECC (Error-Correcting Code) Support: Helps detect and correct memory errors, improving data integrity and system stability—ideal for business-critical NAS environments.
• DDR4 2666 MHz Speed: Delivers fast data transfer rates (PC4-21300), enhancing overall system performance for multitasking and data-intensive operations.
• Unbuffered UDIMM: Offers lower latency compared to registered memory, suitable for systems that prioritize speed over scalability.
• Low Voltage (1.2V): Reduces power consumption, contributing to energy efficiency and cooler operation

Performance & Compatibility

• Synology Certified: Using official Synology memory modules avoids system instability and ensures full warranty and support
• ECC (Error-Correcting Code): Yes — helps detect and correct memory errors for improved reliability
• Buffered/Registered: Unbuffered (not registered)
• Designed for: Synology NAS and server systems
• 288-Pin DIMM Form Factor: Standardized for easy installation in supported NAS units.
• Compatible Models: Includes SA3200D, UC3200, RS3621xs+, RS2821RP+, RS1619xs+, RS3618xs, RS4017xs+, and more

NB: Synology strongly recommends using only authentic Synology memory modules to ensure system stability and maintain warranty coverage. Using third-party memory may lead to boot failures or instability, and Synology may not provide full technical support in such cases

Reliability

• ECC (Error-Correcting Code): This module uses ECC technology to detect and correct memory errors, which is crucial for maintaining data integrity in enterprise and server environments.
• Unbuffered DIMM: It’s an unbuffered (non-registered) module, suitable for systems that don’t require registered memory, offering lower latency and power consumption.
• Synology Certified: Built and tested by Synology for maximum compatibility and performance with their devices. Using non-Synology memory can lead to instability or void warranty.
• Voltage Efficiency: Operates at 1.2V, contributing to energy efficiency and reduced heat output.
• 5-Year Warranty: Long-term protection and peace of mind for enterprise deployments

Warranty

• Warranty: 5 years
• Manufacturer: Synology
• Country of Origin: Taiwan
• Note: Using non-Synology memory modules may void warranty or cause system instability

Use Case

This module is best suited for users upgrading or expanding memory in Synology NAS systems that support ECC memory. It’s particularly valuable for environments requiring high reliability, such as file servers, virtualization, and backup solutions.

Why Choose Synology Memory?

Synology recommends using their certified memory modules to ensure system stability and full warranty coverage. Using third-party RAM may lead to boot failures or voided support.

If you’re considering this for a Synology NAS upgrade, it’s a solid choice for reliability and performance. Want help checking compatibility with your specific NAS model