Your personal cloud solution for effortless data management.
DS120j is a centralized storage solution that allows you to share family photos and videos to all household devices, such as computers and mobile phones.
Over 112 MB/s sequential reading
9.81 watts under full operation
Synology's comprehensive multi-version backup solution protects your digital assets on computers (Windows/Mac) and mobile phones (Android/iOS) against malicious attacks, including the rising encryption-based ransomware threats.
Access files on your Synology NAS over the Internet without the hassle of setting up port forwarding rules, DDNS, or other complicated network settings. QuickConnect allows you to connect via a secure, customizable address, so that you can instantly access media and work files on any Internet-connected device with no additional charge.
Store multiple backup versions with block-level incremental data backup and cross-version deduplication.
Learn moreAward-winning operating system with an intuitive user interface and powerful capabilities.
Learn moreSecure data with comprehensive built-in security tools to protect your devices against evolving threats.
Learn moreSave additional investment by integrating various network services, web/mail services, management applications into your NAS.
Learn more
Hardware Specifications |
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CPU |
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CPU |
CPU Model | Marvell Armada 3700 88F3720 |
| CPU Quantity | 1 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 2-core 800 MHz | |
| Hardware Encryption Engine | ||
Memory |
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Memory |
System Memory | 512 MB DDR3L non-ECC |
| Notes | Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. | |
Storage |
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Storage |
Drive Bays | 1 |
| Compatible Drive Type* (See all supported drives) |
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| Maximum Single Volume Size* | 108 TB | |
| Hot Swappable Drive | - | |
| Notes | "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. | |
External Ports |
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External Ports |
RJ-45 1GbE LAN Port | 1 |
| USB 2.0 Port | 2 | |
File System |
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File System |
Internal Drives |
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| External Drives |
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| Notes | exFAT Access is purchased separately in Package Center. | |
Appearance |
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Appearance |
Size (Height x Width x Depth) | 166 mm x 71 mm x 224 mm |
| Weight | 0.7 kg | |
Others |
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Others |
System Fan | 60 mm x 60 mm x 1 pcs |
| Fan Speed Mode |
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| Power Recovery | ||
| Noise Level* | 16.9 dB(A) | |
| Scheduled Power On / Off | ||
| Wake on LAN / WAN | ||
| Power Supply Unit / Adapter | 36 W | |
| AC Input Power Voltage | 100 V to 240 V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption* |
9.81 W (Access) 4.68 W (HDD Hibernation) |
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| British Thermal Unit |
33.47 BTU/hr (Access) 15.97 BTU/hr (HDD Hibernation) |
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| Notes |
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Temperature |
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Temperature |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
Certification |
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Certification |
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Warranty |
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Warranty |
2 Years | |
| Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | |
Environment |
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Environment |
RoHS Compliant | |
Packaging Content |
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Packaging Content |
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Optional Accessories |
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Optional Accessories |
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DSM Specifications |
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Storage Management |
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Storage Management |
Maximum Internal Volume Number | 1 |
| SSD TRIM | ||
| Supported RAID Type | Basic | |
File Services |
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File Services |
File Protocol | SMB/AFP/NFS/FTP/WebDAV |
| Maximum Concurrent SMB/AFP/FTP Connections | 50 | |
| Windows Access Control List (ACL) Integration | ||
| NFS Kerberos Authentication | ||
| Notes | The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed. | |
Account & Shared Folder |
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Account & Shared Folder |
Maximum Local User Accounts | 512 |
| Maximum Local Groups | 128 | |
| Maximum Shared Folder | 256 | |
| Maximum Shared Folder Sync Tasks | 2 | |
Log Center |
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Log Center |
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| Syslog Events per Second | 50 | |
General Specifications |
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General Specifications |
Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
| Supported Browsers |
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| Supported Language | English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文 | |
Add-on Packages view the complete package list |
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Download Station |
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Download Station |
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| Maximum Concurrent Download Tasks | 50 | |
exFAT Access (Optional) |
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exFAT Access (Optional) |
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iSCSI Manager |
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iSCSI Manager |
Maximum iSCSI Target Number | 10 |
| Maximum iSCSI LUN | 10 | |
Media Server |
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Media Server |
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| DLNA Compliance | ||
Moments |
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Moments |
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| Notes | The following features of Moments are not supported on this model: facial recognition, subject recognition, Auto Color & Rotate, and Moments Select. | |
Surveillance Station |
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Surveillance Station |
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| Maximum IP cam (Licenses required) | 5 (including 2 Free License) (See All Supported IP Cameras) | |
| Total FPS (H.264) |
150 FPS @ 720p (1280x720) 120 FPS @ 1080p (1920x1080) 70 FPS @ 3M (2048x1536) 40 FPS @ 5M (2591x1944) 20 FPS @ 4K (3840x2160) |
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| Total FPS (H.265) |
150 FPS @ 720p (1280x720) 150 FPS @ 1080p (1920x1080) 130 FPS @ 3M (2048x1536) 65 FPS @ 5M (2591x1944) 30 FPS @ 4K (3840x2160) |
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| Total FPS (MJPEG) |
50 FPS @ 720p (1280x720) 50 FPS @ 1080p (1920x1080) 40 FPS @ 3M (2048x1536) 40 FPS @ 5M (2591x1944) |
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| Notes |
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Synology Drive |
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Synology Drive |
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| Recommended Number of Hosted Files | 10,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
| Recommended Number of Concurrent Sync Clients | 5 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
| Notes |
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Video Station |
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Video Station |
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| Video Transcoding | Group 2 (See more) | |
VPN Server |
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VPN Server |
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| Maximum Connections | 10 | |
Notes:
