The Synology DS420+ is a 4-bay NAS from Synology in the DiskStation range. It comes with 2GB of DDR4 SO-DIMM RAM (upgradeable to 6GB) and supports 3.5-inch SATA HDD/SSD drives. This guide covers compatible RAM and storage upgrades with our top recommendations.
Synology DS420+ Specifications
| NAS Model | Synology DS420+ |
| Brand | Synology |
| Series | DiskStation |
| Drive Bays | 4 |
| Processor | Intel Celeron J4025 |
| Default RAM | 2GB |
| Max RAM | 6GB |
| RAM Type | DDR4 SO-DIMM |
| RAM Slots | 1 |
| Drive Compatibility | 3.5-inch SATA HDD/SSD |
| Network | 2x 1GbE |
| Release Year | 2020 |
Compatible RAM for Synology DS420+
The Synology DS420+ ships with 2GB and can be upgraded to a maximum of 6GB. It uses DDR4 SO-DIMM SO-DIMM modules (1 slot).
Recommended RAM Upgrades
| Capacity | Module | Buy |
|---|---|---|
| 4GB | Crucial DDR4-2666 4GB SO-DIMM | Check Price |
| 8GB | Crucial DDR4-2666 8GB SO-DIMM | Check Price |
| 16GB | Crucial DDR4-2666 16GB SO-DIMM | Check Price |
Compatible Storage Drives
The Synology DS420+ has 4 drive bays supporting 3.5-inch SATA HDD/SSD. Here are our top drive recommendations:
Recommended NAS Drives
| Capacity | Drive | Buy |
|---|---|---|
| 4TB HDD | Seagate IronWolf 4TB NAS HDD | Check Price |
| 8TB HDD | Seagate IronWolf 8TB NAS HDD | Check Price |
| 16TB HDD | Seagate IronWolf Pro 16TB NAS HDD | Check Price |
| 1TB NVMe | Samsung 970 EVO Plus 1TB M.2 NVMe | Check Price |
Setup Tips
- Use NAS-rated drives: Always use drives designed for NAS use (e.g. Seagate IronWolf, WD Red Plus) for reliability and vibration resistance.
- RAID configuration: For data protection, use RAID 1 (mirroring) for 2-bay units or RAID 5/SHR for 4+ bay units.
- RAM upgrade: Upgrading RAM improves multitasking, virtualisation and app performance. Use Synology-compatible modules.
- Network: Connect via Ethernet for best performance. This model supports 2x 1GbE.
Frequently Asked Questions
What is the maximum RAM for the Synology DS420+?
The Synology DS420+ supports up to 6GB of DDR4 SO-DIMM RAM.
How many drive bays does the Synology DS420+ have?
The Synology DS420+ has 4 drive bays supporting 3.5-inch SATA HDD/SSD.
What drives are compatible with the Synology DS420+?
The Synology DS420+ supports 3.5-inch SATA HDD/SSD. We recommend NAS-rated drives like the Seagate IronWolf or WD Red Plus series.
Related Synology Upgrade Guides
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- Synology Upgrade Guide
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