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Synology D4ES01-8G

Synology 4GB DDR4-2666 RAM Module (ECC SO-DIMM)

Synology - Synology 4GB DDR4-2666 RAM Module (ECC SO-DIMM), Compatible with --> RS1221RP+ / RS1221+ / DS1821+ / DS1621xs+ / DS1621+ NAS units
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Specials
Prices, images and descriptions are for reference purposes only & may change without prior notice. PLEASE RELY ON ABOVE DESCRIPTIONS AND NOT ON IMAGES. Synology D4ES01-8G Synology 4GB DDR4-2666 RAM Module (ECC SO-DIMM) is available from Laptop Direct and it is sold as new from our NAS - Accessories for NAS units range of products. For reference purposes, the price of R9900 is valid 2026-10-08, and while stocks last, may be valid until . The price displayed is a guide for reference purposes only, and may change without prior notice. Reference prices are an invitation for potential buyers to make an offer to purchase, which we may reject without reason. A quote with final pricing is sent before a purchase can be made. T&C's apply. E&OE. Laptop Direct. You are looking at products found in the NAS - Accessories for NAS units category.
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Specification for the entire series

Important information: Kindly note that specifications differ between models. Features, options and accessories displayed below this paragraph are not included with this product unless it has been specified in the above description.


Please remember these important points when reading the information below this paragraph: Operating systems cannot be removed or changed, monitors are not included with computers, free Anti-virus and Office Software are trial versions or may have limited features and an additional license needs to be purchased to activate the full product.

Synology D4ES01-8G

Synology 4GB DDR4-2666 RAM Module (ECC SO-DIMM)

Synology 4GB DDR4-2666 RAM Module (ECC SO-DIMM), Compatible with --> RS1221RP+ / RS1221+ / DS1821+ / DS1621xs+ / DS1621+ NAS units

Overview Summary:

The Synology D4ES01-8G 8GB DDR4 ECC SO-DIMM memory module is designed to deliver dependable performance and long-term stability for compatible Synology NAS systems. Using genuine Synology memory ensures full system compatibility, consistent operation, and peace of mind for business and advanced home users.

Ideal for expanding your NAS capabilities, this module supports smoother multitasking, improved system responsiveness, and reliable data handling. If you want a trusted upgrade that works seamlessly with your Synology device, buy now and keep your storage system performing at its best.

What tier does this fall into?

Enterprise-grade

What is this best for?

NAS memory upgrades, data storage systems, business file servers, virtualisation support, multi-user environments

Overview:

Synology D4ES01-8G DDR4 ECC Memory Module for NAS Systems
The Synology D4ES01-8G is an ECC unbuffered SO-DIMM memory module designed to deliver stable and reliable performance for compatible Synology NAS systems. Built to meet Synology platform requirements, this DDR4 2666 MHz module supports smooth multitasking, improved system responsiveness, and dependable data handling in demanding storage environments. Using genuine Synology memory helps ensure optimal compatibility and consistent operation across supported NAS models.

Description:

This 8GB DDR4 ECC SO-DIMM memory module is engineered for Synology NAS devices that require dependable performance and system stability. It enhances multitasking, supports data integrity through ECC technology, and integrates seamlessly with selected Synology RackStation and DiskStation systems for worry free memory expansion.

Features:

Memory Type and Performance
Designed for modern NAS workloads, this module operates at 2666 MHz and uses DDR4 architecture to balance speed, efficiency, and reliability. ECC support helps detect and correct memory errors, making it suitable for business critical storage and continuous operation.

Form Factor and Design
The compact 260 pin SO-DIMM format allows easy installation in supported Synology NAS units. Its unbuffered design aligns with Synology system requirements, ensuring smooth integration without compatibility issues.

Capacity and Configuration
This module provides a single 8GB memory stick, making it ideal for targeted upgrades or system expansion where stability and performance consistency are essential.

Compatibility with Synology NAS Models
Supported systems include the following Synology NAS units:

  • RS1221RP+
  • RS1221+
  • DS1821+
  • DS1621xs+
  • DS1621+

Product Identification

  • Product name: Synology D4ES01-8G
  • Memory capacity: 8 GB
  • Memory configuration: 1 x 8 GB
  • Memory type: DDR4 ECC
  • Operating frequency: 2666 MHz
  • Form factor: 260 pin SO-DIMM
  • Buffering: Unbuffered


Specifications:

© 2026 Respective owners and brand holders. This table has been carefully researched and generated by Laptop Direct CC (https://www.laptopdirect.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specificationsspacer
Product CodeSynology D4ES01-8Gspacer
Product Synology D4ES01-8G
Internal memory 8 GB
Memory layout 1 x 8 GB
Internal memory type DDR4
Memory frequency 2666 MHz
Memory form factor 260-pin SO-DIMM, ECC, Unbuffered

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