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Secure digital content with a modern look
When performance meets style
DS620slim is a mini 6-bay NAS with a stylish chassis design, perfectly blending in modern workplaces or apartments. Supporting near-instantaneous snapshot technology and real-time 4K video transcoding, DS620slim is an all-around file management solution that fulfills professionals’ needs of advanced data protection and high-quality media streaming.
Remain classic while shrinking footprint
The mini 6-bay design keeps DS620slim classic and saves deployment space. With six 2.5" drive support, DS620slim is able to boost performance by installing SSDs.
Ultimate file management and sharing
File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS620slim supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.
Synchronize files across your devices
Cloud Station Suite provides real-time data synchronization across all your devices and other Synology NAS. "Intelliversioning" keeps the most important file versions to better utilize storage space.
4K Multimedia Server
Access and stream your 4K media content anytime and anywhere. DS620slim supports 4K H.264/H.265 online transcoding via Video Station and DS video, allowing 4K videos to be converted and played on the fly on other computers, smartphones, and media players that originally do not support Ultra HD formats.
CPU Model | Intel Celeron J3355 |
CPU Architecture | 64-bit |
CPU Frequency | Dual Core 2.0 (base) / 2.5 (burst) GHz |
Hardware Encryption Engine (AES-NI) | Yes |
Hardware Transcoding Engine | H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 |
System Memory | 2 GB DDR3L |
Memory Module Pre-installed | 2 GB (2 GB x 1) |
Total Memory Slots | 2 |
Memory Expandable up to | 6 GB (2 GB + 4 GB) |
Notes |
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Drive Bays | 6 |
Compatible Drive Type |
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Maximum Internal Raw Capacity | 46.08 TB (7.68 TB drive x 6) (Capacity may vary by RAID types) |
Maximum Single Volume Size* | 108 TB |
Hot Swappable Drive | Yes |
Notes |
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RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
USB 3.0 Port | 2 |
Internal Drives |
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External Drives |
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Notes | exFAT Access is purchased separately in Package Center. |
Size (Height x Width x Depth) | 121 mm x 151 mm x 175 mm |
Weight | 1.4 kg |
System Fan | 80 mm x 80 mm x 1 pcs |
Fan Speed Mode |
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Easy Replacement System Fan | Yes |
Brightness Adjustable Front LED Indicators | Yes |
Power Recovery | Yes |
Noise Level* | 20.5 dB(A) |
Scheduled Power On / Off | Yes |
Wake on LAN / WAN | Yes |
Power Supply Unit / Adapter | 65 W |
AC Input Power Voltage | 100 V to 240 V AC |
Power Frequency | 50/60 Hz, Single Phase |
Power Consumption* |
34.88 W (Access) 7.59 W (HDD Hibernation) |
British Thermal Unit |
119.1 BTU/hr (Access) 25.92 BTU/hr (HDD Hibernation) |
Notes |
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Operating Temperature | 5°C to 40°C (40°F to 104°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
Relative Humidity | 5% to 95% RH |
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2 Years | |
Notes | The warranty period starts from the purchase date as stated on your purchase receipt. |
RoHS Compliant |
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Maximum Internal Volume Number | 64 |
Maximum iSCSI Target Number | 128 |
Maximum iSCSI LUN | 256 |
iSCSI LUN Clone/Snapshot, Windows ODX | Yes |
SSD Read / Write Cache (White Paper) | Yes |
SSD TRIM | Yes |
Supported RAID Type |
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RAID Migration |
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Volume Expansion with Larger HDDs |
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Volume Expansion by Adding a HDD |
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Global Hot Spare Supported RAID Type |
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File Protocol | CIFS/AFP/NFS/FTP/WebDAV |
Maximum Concurrent CIFS/AFP/FTP Connections | 500 |
Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) | 1,500 |
Windows Access Control List (ACL) Integration | Yes |
NFS Kerberos Authentication | Yes |
Maximum Local User Accounts | 2,048 |
Maximum Local Groups | 256 |
Maximum Shared Folder | 256 |
Maximum Shared Folder Sync Tasks | 8 |
Synology High Availability | Yes |
Syslog Events per Second | 400 |
VMware vSphere 6 with VAAI | Yes |
Windows Server 2016 | Yes |
Citrix Ready | Yes |
OpenStack | Yes |
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, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Ceský, ???????, ???, ???, ????, ???? |
Yes |
Yes |
Maximum Users | 1,000 |
Notes |
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Recommended Number of Hosted Files | 500,000 |
Recommended Number of Concurrent Sync Clients | 500 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
Notes |
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Yes |
Maximum Concurrent Download Tasks | 80 |
Yes |
Free Email Accounts | 5 (Licenses required for additional accounts) |
Maximum Number of Concurrent Users | 50 |
Notes |
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DLNA Compliance | Yes |
Facial Recognition | Yes |
Subject Recognition | Yes |
Auto Color & Rotate | Yes |
Moments Select | Yes |
Maximum Snapshots per Shared Folder | 1,024 |
Maximum of System Snapshots | 65,536 |
Maximum IP cam (Licenses required) | 25 (including 2 Free License) (See All Supported IP Cameras) |
Total FPS (H.264) |
750 FPS @ 720p (1280x720) 600 FPS @ 1080p (1920x1080) 350 FPS @ 3M (2048x1536) 250 FPS @ 5M (2591x1944) 120 FPS @ 4K (3840x2160) |
Total FPS (H.265) |
750 FPS @ 720p (1280x720) 750 FPS @ 1080p (1920x1080) 450 FPS @ 3M (2048x1536) 250 FPS @ 5M (2591x1944) 200 FPS @ 4K (3840x2160) |
Total FPS (MJPEG) |
450 FPS @ 720p (1280x720) 250 FPS @ 1080p (1920x1080) 160 FPS @ 3M (2048x1536) 130 FPS @ 5M (2591x1944) |
Notes |
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Recommended Number of Hosted Files | 500,000 (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 | 450 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
Notes |
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Maximum Users | 400 |
Notes |
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Video Transcoding | 4K Group 1 |
Maximum Transcoding Channel Number |
2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or 2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1 |
Recommended Virtual Machine Instances | 2 |
Recommended Virtual DSM Number (Licenses required) | 2 (including 1 Free License) |
Notes | The specifications vary depending on system configuration and memory size. |
Maximum Connections | 30 |