DiskStation DS420+
Streamline your data management
Desktop Nas / 4-Bays
CPU | CPU Model | Intel Celeron J4025 |
CPU Quantity | 1 | |
CPU Quantity | 64-bit | |
CPU Frequency | 2-core 2.0 (base) / 2.9 (burst) GHz | |
Hardware Encryption Engine (AES-NI) | ||
Memory | System Memory | 2 GB DDR4 non-ECC |
Total Memory Slots | 1 | |
Maximum Memory Capacity | 6 GB (2 GB + 4 GB) | |
Notes |
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Storage | Drive Bays | 4 |
M.2 Drive Slots | 2 (NVMe) | |
Compatible Drive Type* |
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Maximum Single Volume Size* | 108 TB | |
Hot Swappable Drive | ||
Notes |
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External Ports | RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
USB 3.2 Gen 1 Port* | 2 | |
USB / SD Copy | ||
Notes | The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019. | |
File System | Internal Drives |
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External Drives |
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Appearance | Size (Height x Width x Depth) | 166 mm x 199 mm x 223 mm |
Weight | 2.18 kg | |
Others | System Fan | 92 mm x 92 mm x 2 pcs |
Fan Speed Mode |
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Brightness Adjustable Front LED Indicators | ||
Power Recovery | ||
Noise Level* | 19.8 dB(A) | |
Scheduled Power On / Off | ||
Wake on LAN / WAN | ||
Power Supply Unit / Adapter | 90 W | |
AC Input Power Voltage | 100 V to 240 V AC | |
Power Frequency | 50/60 Hz, Single Phase | |
Power Consumption* | 28.30 W (Access) 8.45 W (HDD Hibernation) | |
British Thermal Unit | 96.5 BTU/hr (Access) 28.81 BTU/hr (HDD Hibernation) | |
Notes |
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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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Warranty | 3 Years | |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. | |
Environment | RoHS Compliant | |
Packaging Content |
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Optional Accessories |
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Notes | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. |
Storage Management | Maximum Internal Volume Number | Number 64 |
SSD Read / Write Cache (White Paper) | ||
SSD TRIM | ||
Supported RAID Type |
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RAID Migration | Basic to RAID 1 | |
Volume Expansion with Larger HDDs |
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Volume Expansion by Adding a HDD | Synology Hybrid RAID | |
File Services | File Protocol | SMB/AFP/NFS/FTP/WebDAV |
Maximum Concurrent SMB/AFP/FTP Connections | 500 | |
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) | 1,500 | |
Windows Access Control List (ACL) Integration | ||
NFS Kerberos Authentication | ||
Notes |
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Account & Shared Folder | Maximum Local User Accounts | 2,048 |
Maximum Local Groups | 256 | |
Maximum Shared Folder | 256 | |
Maximum Shared Folder Sync Tasks | 8 | |
High Availability | Synology High Availability | |
Log Center | Syslog Events per Second | 800 |
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 | |
Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. | |
ADD-ON-PACKAGES | ||
Antivirus by McAfee (Trial) | ||
Central Management System | ||
Synology Chat | Maximum Users | 1,000 |
Notes |
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Document Viewer | ||
Download Station | Maximum Concurrent Download Tasks | 80 |
SAN Manager | Maximum iSCSI Target Number | 128 |
Maximum LUN | 256 | |
LUN Clone/Snapshot, Windows ODX | ||
Notes | iSCSI Manager has been renamed to SAN Manager in DSM 7.0. | |
Synology MailPlus / MailPlus Server | Free Email Accounts | 5 (Licenses required for additional accounts) |
Maximum Number of Concurrent Users | 50 | |
Maximum Server Performance | 936,000 emails per day, approx. 28GB | |
Notes |
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Media Server | DLNA Compliance | |
Synology Photos | Facial Recognition | |
Notes | Photo Station and Synology Moments are succeeded by Synology Photos in DSM 7.0. For a features comparison, check this article. | |
Snapshot Replication | Maximum Snapshots per Shared Folder | 1,024 |
Maximum of System Snapshots | 65,536 | |
Surveillance Station | Maximum IP cam (Licenses required) | 25 (including 2 Free License) (See All Supported IP Cameras) |
Total FPS (H.264) | 750 FPS @ 720p (1280×720) 700 FPS @ 1080p (1920×1080) 350 FPS @ 3M (2048×1536) 240 FPS @ 5M (2591×1944) 120 FPS @ 4K (3840×2160) | |
Total FPS (H.265) | 750 FPS @ 720p (1280×720) 750 FPS @ 1080p (1920×1080) 500 FPS @ 3M (2048×1536) 250 FPS @ 5M (2591×1944) 200 FPS @ 4K (3840×2160) | |
Total FPS (MJPEG) | 450 FPS @ 720p (1280×720) 250 FPS @ 1080p (1920×1080) 160 FPS @ 3M (2048×1536) 130 FPS @ 5M (2591×1944) | |
Notes |
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Synology Drive | Recommended Number of Hosted Files | 5,000,000 (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 | 350 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
Notes |
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Synology Office | Maximum Users | 600 |
Notes |
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Video Station | ||
Virtual Machine Manager | Recommended Virtual Machine Instances | 2 (Learn more) |
Recommended Virtual DSM Number (Licenses required) | 2 (including 1 Free License) | |
Notes | The specifications vary depending on system configuration and memory size. | |
VPN Server | Maximum Connections | 30 |