The Synology DiskStation DS120j is a 1-bay NAS designed for home use. It comes with 512MB DDR3L of RAM (not user-upgradeable). Powered by the Marvell Armada 3720 processor, it offers reliable network-attached storage for file sharing, backups, and media streaming.
This guide covers complete RAM and storage compatibility for the Synology DiskStation DS120j, including upgrade options, maximum supported configurations, and recommended drives.
Specifications Overview
| Specification | Details |
|---|---|
| NAS Model | Synology DiskStation DS120j |
| Brand | Synology |
| Drive Bays | 1 bays |
| Processor | Marvell Armada 3720 |
| Default RAM | 512MB DDR3L |
| Maximum RAM | 512MB DDR3L |
| RAM Type | DDR3L |
| RAM Slots | 0 |
| RAM Upgradeable | No |
| M.2 Slots | None |
| Ethernet | 1x 1GbE |
| USB Ports | 2x USB 2.0 |
| Use Case | Home |
| Price Tier | Budget |
Memory (RAM) Compatibility
The Synology DiskStation DS120j comes with 512MB DDR3L which is not user-upgradeable. The RAM is soldered to the motherboard.
Storage Compatibility
The Synology DiskStation DS120j has 1 drive bays supporting 3.5″ SATA HDDs and 2.5″ SATA SSDs.
Recommended NAS Hard Drives
| Drive | Capacity | Price |
|---|---|---|
| Seagate IronWolf | 4TB | Check Price |
| Seagate IronWolf | 8TB | Check Price |
| WD Red Plus | 4TB | Check Price |
| WD Red Plus | 8TB | Check Price |
Network Connectivity
The Synology DiskStation DS120j features 1x 1GbE Ethernet and 2x USB 2.0 connectivity.
Related Guides
Frequently Asked Questions
What is the maximum RAM for the Synology DiskStation DS120j?
The Synology DiskStation DS120j supports a maximum of 512MB DDR3L. It ships with 512MB DDR3L by default.
How many drive bays does the Synology DiskStation DS120j have?
The Synology DiskStation DS120j has 1 drive bays supporting 3.5″ SATA HDDs and 2.5″ SATA SSDs.
Can I upgrade the RAM in the Synology DiskStation DS120j?
No, the RAM is soldered and cannot be upgraded.
What hard drives work with the Synology DiskStation DS120j?
The Synology DiskStation DS120j works with standard 3.5″ SATA HDDs. We recommend NAS-rated drives like the Seagate IronWolf or WD Red Plus.