Synology
Synology 2 bay NAS DiskStation DS420+ (Diskless)
Status: Synology 2 bay NAS DiskStation DS420+: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.
Bottom line: The Synology 2 bay NAS DiskStation DS420+: Two M.2 2280 NVMe slots for SSD cache, no drive bays lost; main trade-off: ships with just 2GB RAM; 6GB needs a paid upgrade.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Search Amazon for an in-stock match → Original listing (currently unavailable) →
Compare to similar external storage
Pros & Cons
Pros
- ✓ Two M.2 2280 NVMe slots for SSD cache, no drive bays lost
- ✓ 226 MB/s read / 225 MB/s write over encrypted volumes
- ✓ Intel dual-core with AES-NI hardware encryption engine
- ✓ 2GB DDR4, expandable to 6GB for heavier multitasking
- ✓ Two Surveillance Station camera licenses included by default
Cons
- ✗ Ships with just 2GB RAM; 6GB needs a paid upgrade
- ✗ Only 2 storage bays limits raw capacity vs 4-bay units
- ✗ Extra camera licenses (CLP1/CLP4/CLP8) cost more
- ✗ Premium price for a 2-bay before you add any disks
Manufacturer description
Synology DiskStation DS420+ is a networkattached storage solution for smooth data sharing, video streaming, and photo indexing. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance.
SpecPicks Verdict
SpecPicks scored Synology 2 bay NAS DiskStation DS420+ using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Synology's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Two built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays.
- Intel dual-core processor with AES-NI hardware encryption engine; over 226 MB/s sequential read and 225 MB/s sequential write throughput.
- 2 GB DDR4 memory (expandable up to 6 GB)
- Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time.
- By default, two camera licenses are installed; extra licenses can be purchased (CLP1, CLP4, or CLP8)
Full Specifications
| Size | 4-bay; 2GB DDR4 |
|---|---|
| Brand | Synology |
| Color | Black |
| Material | Synthetic Leather |
| Model Number | DS420+ |
| Mounting Type | Tabletop, Surface Mount |
| Built-In Media | 1 |
| Mfr Part Number | DS420+ |
| Number of Items | 1 |
| Weight Capacity | Minimum weight: 10.56 ounces |
| Compatible Devices | Desktop |
| Enclosure Material | Synthetic Leather |
| Warranty Description | 3 year |
| Item Dimensions D x W x H | 7.83"D x 8.78"W x 6.54"H |
| Global Trade Identification Number | 84650400318100 |
Ready to buy?
Amazon shows no buyable offer for Synology 2 bay NAS DiskStation DS420+ at the last check. An Amazon search for this model lists current offers. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related External Storage
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
- Best 1440p Gaming GPUs in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- How to Build a Windows 98 Retro PC in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Build a 2001 GeForce 3 Windows 98 Gaming PC in 2026: Parts and Setup
- Running Llama 3.1 70B Locally: Hardware Requirements & Performance Benchmarks
- Gemini-SQL2 Tops Text-to-SQL — Can a 12GB RTX 3060 Run Local SQL Models Instead?
- Best SSDs & Cloning Tools for Gaming PC Upgrades 2026
- Benchmarking Open LLMs for Tool-Use: RTX 3060 12GB vs Ryzen 5800X CPU-Only
- Steam Deck OLED vs ROG Ally Z1 Extreme: 2025 Comparison
- RTX 5090 vs RX 7900 XTX — does AMD still matter?
- Build a Fully Local PDF-to-Audiobook Pipeline on Jetson Orin Nano Super
- What We Lost When LAN Parties Died: A 2026 Editorial
- Local Video-Gen on 12GB: What an RTX 3060 Does in the Gemini Omni Flash Era
- Retro Console Mods in Canada: 2026 Legal & Hardware Guide
- Ternary Text-to-Image: Running Bonsai 4B on a 12GB RTX 3060
- Best Parts for a Budget Ryzen + RTX 3060 Gaming PC Build in 2026
- Aider vs Cline vs Continue.dev on a Local RTX 3060 (2026)
- Budget Ollama Build Under $500: What Actually Runs in 2026
- 8BitDo SN30 Pro on SNES Classic and Genesis Mini: Bluetooth Setup Guide
- Ryzen 5 5600G vs Ryzen 7 5700X for a Budget Homelab and Virtualization Box in 2026
- Claude Now Writes 65% of Anthropic's Code: The Local Coding-Rig Angle
- Best Internal SSDs for PC Gaming Builds (2026)
- AMD Ryzen 9 9950X3D2 Runs Faster on Linux Than Windows 11
- Four Frontier Models in Eight Days: What a 12GB GPU Can Actually Run
- Aider vs Cline vs Continue.dev for Local-LLM Coding on a 12GB GPU
- Best Gaming Headsets for PS5 and PC in 2026
- Coral TPU for LLM Inference: What the Specs Really Say
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090