D4ER01-64G Synology 64GB PC4-21300 DDR4 SDRAM 2666MHz 1.20 Voltage Ecc Registered Buffered 288-pin DIMM Memory Module

Overview of the 64GB Memory

The Synology D4ER01-64G is a high-capacity 64GB DDR4 SDRAM module engineered for enterprise-class network-attached storage (NAS). Built to deliver stable, server-grade performance, this memory upgrade is ideal for demanding data-center workloads and intensive multi-user environments.

Main Specifications

• Product type: RAM module / memory stick
• Model number: D4ER01-64G
• Brand: Synology

Technical Specifications

• Capacity: 64 GB (single module)
• Memory type: DDR4 SDRAM
• Speed / standard: DDR4-2666 / PC4-21300
• Form factor: 288-pin DIMM
• Voltage: 1.20 V
• Error protection: ECC (Error-Correcting Code)
• Signal type: Registered, Buffered
• Designed for: Synology SA6400 NAS enclosure

Features and Advantages

Reliable, Server-Grade Stability

This module incorporates ECC technology and a registered/buffered design to detect and correct single-bit memory errors, reducing data corruption and keeping your NAS running smoothly under heavy load.

Optimized Performance

With a frequency of 2666 MHz (DDR4-2666 / PC4-21300), the D4ER01-64G offers consistent throughput for applications like virtualization, large-scale backups, database services, and intensive file sharing.

High Capacity in a Single Module

A single 64GB stick simplifies upgrades and preserves DIMM slots for future expansion — useful when maximizing memory density in enterprise NAS systems.

Performance

Upgrading to a high-capacity, ECC registered DDR4 module can significantly improve multitasking, speed up caching and indexing, and reduce the likelihood of downtime caused by memory errors. For environments running many virtual machines or memory-intensive services, increased RAM often yields a noticeable performance uplift.

This Synology D4ER01-64G RAM

In summary, the D4ER01-64G offers a reliable, high-capacity memory solution tailored for Synology’s enterprise storage platforms. Its ECC and registered/buffered design prioritizes data integrity and uptime — essential for businesses and service providers that rely on constant access to stored information.

Synology 64GB PC4-21300 DDR4 SDRAM Memory 

The D4ER01-64G Synology 64GB PC4-21300 DDR4 SDRAM 2666MHz 1.20 V ECC Registered Buffered 288-pin DIMM is a high-performance server-grade memory module designed specifically for Synology NAS systems and enterprise-level servers. Built with advanced ECC (Error-Correcting Code) technology, registered buffering, and DDR4 architecture, this memory upgrade delivers unmatched stability, reliability, and efficiency for mission-critical environments. Whether you are running a business data center, virtualization tasks, high-performance computing workloads, or secure backup operations, this module ensures that your Synology NAS server achieves optimal performance without interruptions.

Synology Memory Module

High-Capacity 64GB DDR4 Module

One of the standout features of the D4ER01-64G Synology 64GB DDR4 module is its massive 64GB capacity. This enables NAS administrators to run multiple applications, large-scale virtual machines, and demanding data-intensive processes with ease. The increased memory capacity supports efficient caching, advanced RAID configurations, and faster data retrieval for enterprise workloads.

PC4-21300 DDR4 SDRAM Performance

Operating at 2666MHz, the D4ER01-64G offers lightning-fast data transfer rates. Classified as PC4-21300, this memory module ensures smooth multitasking, reduced latency, and improved bandwidth efficiency. It is designed to handle high-throughput workloads such as virtualization, large-scale file sharing, and database hosting seamlessly.

ECC Registered Buffered Design

The inclusion of ECC (Error-Correcting Code) and a registered buffered DIMM architecture ensures maximum reliability. ECC technology detects and corrects single-bit memory errors, preventing system crashes and data corruption. The registered buffering reduces electrical load on the memory controller, ensuring stable operation when deploying multiple modules in high-capacity servers.

288-Pin DIMM Form Factor

The memory module features a 288-pin DIMM design, which is the standard for DDR4 server and workstation memory. This ensures compatibility with Synology NAS servers that require ECC Registered DIMMs, making installation and upgrades straightforward for IT professionals.

Energy Efficient 1.20V Power Rating

With a 1.20V operating voltage, the D4ER01-64G consumes less power than older DDR3 memory, reducing energy costs and minimizing heat generation in data centers. This contributes to a more sustainable IT infrastructure and improves overall system longevity by reducing thermal stress.

Benefits of 64GB DDR4 Module

Enhanced Server Stability

By integrating ECC Registered DDR4 memory into your NAS system, you ensure that mission-critical operations run smoothly without downtime caused by memory errors. This is essential for industries where data integrity and availability are crucial, such as finance, healthcare, and cloud services.

Boosted Virtualization Capabilities

Synology NAS devices are often deployed in virtualization environments. The D4ER01-64G provides the capacity and bandwidth needed to run multiple virtual machines simultaneously without performance bottlenecks, making it a valuable asset for enterprises with dynamic IT demands.

Faster Data Processing and Caching

Large memory capacity paired with high DDR4 speeds translates into significantly faster data caching and processing. Applications like big data analytics, machine learning workloads, and intensive file indexing benefit from reduced latency and increased throughput.

Improved Scalability for NAS Systems

Many Synology NAS models allow memory expansion to accommodate growing workloads. The D4ER01-64G makes it possible to scale efficiently, ensuring that the storage solution continues to meet business requirements as data demands grow over time.

Compatibility with Synology NAS Servers

Designed for Enterprise NAS Environments

This memory module is certified for use with Synology enterprise-class NAS servers. By choosing Synology-branded modules, administrators can ensure full compatibility and support, reducing the risks associated with using third-party RAM upgrades.

Use Cases for Synology D4ER01-64G Memory

Enterprise File Sharing

Organizations with hundreds of employees require rapid access to shared files and databases. This memory module enables faster response times and stable connections, even under heavy workloads.

Virtualization and Cloud Storage

Businesses deploying Synology NAS for virtualization benefit significantly from additional memory. The 64GB DDR4 upgrade ensures virtual machines run smoothly and can scale according to demand.

Data Backup and Recovery

Faster memory allows quicker data backups and more reliable recovery processes. This reduces downtime in case of system failures and ensures that data remains safe and accessible.

Big Data Storage

Large-scale data processing applications require immense memory capacity. The D4ER01-64G provides the needed bandwidth and stability for advanced analytics and reporting tasks.

The Synology Memory Modules

Full Compatibility Assurance

Synology-certified memory modules are specifically engineered to function seamlessly with Synology NAS devices. Unlike third-party memory, which may cause instability or void warranties, Synology modules are officially supported.

Rigorous Testing Standards

Every Synology memory module undergoes extensive quality testing for reliability and durability. This ensures that the D4ER01-64G can handle constant 24/7 server operations without performance degradation.

Server and Data Center

Mission-Critical Enterprise Operations

The D4ER01-64G module is designed for mission-critical NAS systems used in enterprise settings. Its ECC Registered buffering ensures data accuracy, while its large capacity supports complex operations without interruptions.

Virtual Desktop Infrastructure (VDI)

Organizations deploying VDI environments need memory-rich NAS servers to support multiple users simultaneously. This 64GB DDR4 module enables a smoother user experience in such deployments.

Database Hosting and Management

Memory-intensive databases require reliable DDR4 ECC memory. The D4ER01-64G provides the stability needed for hosting mission-critical databases and supporting real-time transactions.

Low Voltage Consumption

At just 1.20V, the module reduces power consumption, which is essential in large-scale server deployments where energy efficiency translates into significant cost savings.

Reduced Heat Generation

Lower power consumption results in less heat output, helping to maintain optimal thermal conditions inside the server rack, which in turn extends the lifespan of other components.

Advanced Reliability with ECC Technology

Protection Against Data Loss

By minimizing memory-related failures, ECC technology helps protect sensitive data and ensures compliance with industry standards for data integrity and reliability.