Synology 16GB DDR4 ECC Unbuffered SODIMM DS1825+, DS1525+, DS925+, DS725+) D4ES03-16G

The Synology D4ES03-16G is a 16 GB DDR4 ECC memory module in a 260-pin SO-DIMM form factor, intended for use in Synology NAS and storage servers. It provides error-correcting code (ECC) functionality to help maintain data integrity and improve stability for storage and server workloads.

Advantages

Designed specifically for Synology systems to ensure compatibility and predictable behavior, this 16 GB DDR4 ECC module supports error detection and correction to reduce the risk of data corruption. The SO-DIMM 260-pin form factor fits supported Synology models and contributes to stable operation under heavy I/O and multitasking conditions.

Suitable for

• Synology NAS units and storage servers that accept 260-pin SO-DIMM DDR4 ECC modules
• Environments requiring improved data integrity for file storage and virtualization
• Users upgrading memory to support heavier workloads and concurrent access

Key specifications

• Capacity: 16 GB (1 x 16 GB)
• Memory type: DDR4 ECC
• Form factor: 260-pin SO-DIMM
• Manufacturer part number (MPN): D4ES03-16G
• EAN: 4711174726462

How to use

Power down the Synology device and disconnect it from power before performing the upgrade. Refer to the specific Synology model's hardware installation guide to locate the SO-DIMM slot and follow the documented procedure for safe installation. After inserting the module, reconnect power and verify memory recognition in the device's system information or storage manager.

Recommendations

Always select authentic Synology memory modules from authorized local distributors for optimum compatibility and reliability. Using non-Synology memory modules for expansion may cause system instability or boot failures; Synology may limit warranty coverage and technical support if non-authorized modules are used.