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DS120J
DiskStation DS120j - NAS - Tower - Marvell Armada 3700 - 88F...
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DS120J is a NAS storage solution featuring a 1‐bay design that supports both SATA HDD and SATA SSD drives with a total storage capacity of up to 16 TB. It offers a RAID 0 configuration for straightforward data management and protection while delivering performance in a compact desktop form factor powered by a Realtek processor with 2 cores and 2 GB of pre‐installed DDR3 memory (upgradeable to 4 GB).
DS120J provides connectivity through a USB 2.0 interface alongside a 1GbE network port, ensuring efficient data transfer and network support. With active cooling, a single power supply, no expansion support, and intended use cases including SMB backup, virtualization, and media serving, DS120J is optimized for compact office environments and home backup solutions.
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 DS120J |  DS923+ |  DS220+ |  DS218PLAY |  DS218 | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | NAS | NAS | NAS | NAS |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Bay Count | 1-bay | 4-bay | 2-bay | 2-bay | 2-bay |
| Supported Drive Types | SATA HDD / SATA SSD | Mixed | SATA HDD / SATA SSD | SATA HDD / SATA SSD | SATA HDD / SATA SSD |
| Hot-Swap Support | No | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 16 TB | 64 TB | 32 TB | 32 TB | 32 TB |
| RAID Support | RAID 0 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / JBOD | RAID 0 / RAID 1 / JBOD | RAID 0 / RAID 1 / JBOD |
| CPU Type | Realtek | AMD Ryzen | Intel Celeron | Realtek | Realtek |
| CPU Cores | 2 | 4 | 2 | 4 | 4 |
| Installed RAM | 2 GB | 4 GB | 2 GB | 2 GB | 2 GB |
| Max RAM Capacity | 4 GB | 32 GB | 6 GB | 4 GB | 2 GB |
| RAM Type | DDR3 | ECC DDR4 | DDR4 | DDR4 | DDR4 |
| Network Ports | 1GbE | 2.5GbE | 1GbE | 1GbE | 1GbE |
| LAN Ports | 1 | 2 | 2 | 1 | 2 |
| USB Ports | USB 2.0 | USB 3.2 | USB 3.0 | USB 3.0 | USB 3.0 |
| Expansion Support | No | Yes | No | No | No |
| Cooling | Active | Active | Active | Active | Active |
| Power Supply | Single | Single | Single | Single | Single |
| Power Supply Wattage | N/A | 150W | N/A | N/A | N/A |
| Operating System | DSM | QTS | DSM | QTS | DSM |
| Snapshot Support | No | Yes | Yes | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | No | Yes | Yes | Yes | Yes |
| iSCSI Support | No | Yes | Yes | Yes | Yes |
| Surveillance Support | Yes | Yes | Yes | Yes | Yes |
| Use Case | Home Backup | SMB | SMB | SMB / Media Server | Home Backup / SMB / Media Server / Virtualization |
| Product Name | Synology DiskStation DS120j | QNAP DS923+ | Synology DiskStation DS220+ | TS-DS218PLAY | Synology DiskStation DS218 |
| Height | 9.13 inches | 6.61 inches | 6.5 inches | 6.6 inches | 9.13 inches |
| Width | 6.54 inches | 8.74 inches | 4.3 inches | 4.0 inches | 6.50 inches |
| Depth | 4.06 inches | 9.06 inches | 9.1 inches | 8.9 inches | 4.25 inches |
| Weight | 2.8 lbs | 6.5 lbs | 5.3 lbs | 4.0 lbs | 2.71 lbs |
Reliable entry-level 1-bay NAS. Perfect for simple personal cloud storage and basic document backups with very quiet operation.
Consistent performance and easy setup. The DS120j is a cost-effective solution for users needing basic and dependable network storage.
Excellent value and user-friendly interface. It provides a stable and efficient platform for our simple document management needs.
Robust and efficient 1-bay storage. It offers reliable performance for basic tasks and easy cloud storage integration daily.
Professional grade reliability in a compact tower. A dependable choice for users requiring straightforward and accessible network storage.
Top-tier entry-level NAS for simple use. It delivers consistent speed and the basic data protection our office requires.
Trustworthy performance for basic networking. The DS120j provides a solid and reliable way to centralize our simple office files.
The Synology DiskStation DS120j is an entry-level single-bay NAS tower powered by a Marvell Armada 3700 88F3720 quad-core processor and 512 MB DDR3L memory, designed for home and small office centralized storage, backup, and file sharing.
The DS120j runs on a Marvell Armada 3700 88F3720 quad-core 1.7 GHz processor with 512 MB DDR3L memory, delivering up to 93 MB/s sequential read and 94 MB/s sequential write throughput for efficient file transfers.
Setup takes less than 5 minutes: install a compatible 3.5” or 2.5” HDD/SSD, connect to your router via Gigabit Ethernet, power on, then use Synology’s Web Assistant to install DSM and configure storage and user accounts.
The DS120j accommodates one 3.5” or 2.5” SATA drive up to 16 TB. For added capacity, connect an external USB 3.0 drive to one of its two USB ports or migrate your drive to a multi-bay Synology NAS.