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Synology 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module
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Synology 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module

in Synology RAM
Sku: D4ES01-8G

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Description

Synology 8GB D4ES01-8G ECC DDR4 SO-DIMM Memory Module

Upgrade your Synology 21‑Series NAS with D4ES01‑8G: 8 GB DDR4‑2666 ECC SO‑DIMM certified for DS1821+, DS1621xs+, RS1221+ and more—backed by a 5‑year warranty.

Product Overview

The Synology D4ES01‑8G ECC DDR4 SO‑DIMM 8 GB is an 8 GB DDR4‑2666 MHz ECC unbuffered SO‑DIMM, engineered specifically for Synology’s 21‑Series NAS devices. It delivers reliable error correction, full DSM compatibility, and a 5‑year warranty—ideal for models like DS1821+, DS1621xs+, and RS1221+

Key Features

  • 8 GB DDR4‑2666 MHz (PC4‑21300) with ECC for reliable operation.

  • 260‑pin unbuffered SO‑DIMM, 1.2 V form factor

  • Synology‑certified for models: DS1821+, DS1621xs+, DS1621+, RS1221+/RP+

  • 5‑year warranty ensures long-term support

Technical Specifications

Specification Details
Capacity 8 GB
Speed DDR4‑2666 MHz (PC4‑21300)
ECC Yes – error-detecting and correcting
Form Factor 260‑pin SO‑DIMM
Voltage 1.2 V
Compatibility DS1821+, DS1621xs+, DS1621+, RS1221+/RP+
Warranty 5 years

Why Choose D4ES01‑8G?

  1. Full Synology certification avoids boot issues and firmware conflicts B&H Photo VideoAdorama.

  2. ECC safety protects against silent data corruption—critical for storage and virtualized workloads.

  3. Performance uplift promotes smoother multitasking, caching, and app responsiveness.

  4. Long-term confidence thanks to a 5-year Synology warranty Provantage.

FAQs

Q1: Which NAS models support this RAM?
Officially endorsed for DS1821+, DS1621xs+, DS1621+, RS1221+, and RS1221RP+ .

Q2: Can I use third-party RAM?
Unofficial modules may function, but Synology warns they can cause instability or void support. Official modules guarantee compatibility .

Q3: Why is ECC important?
ECC helps detect and correct single‑bit memory errors, enhancing data integrity—vital for storage systems.

Q4: Will my NAS perform better?
Yes—upgraded RAM improves caching, container/VMM performance, and DSM app responsiveness.

Q5: Can I mix this with other RAM modules?
No. Use identical modules to maintain ECC functionality and system stability .

Q6: How do I install it?
Power off the NAS, insert the SO‑DIMM into an available slot, then reboot. DSM will recognize the memory automatically.

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