DSM Specifications |
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Maximum Internal Volume Number |
64
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SSD Read / Write Cache (White Paper) |
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SSD TRIM |
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Supported RAID Type |
- Synology Hybrid RAID
- Basic
- JBOD
- RAID 0
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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RAID Migration |
- Basic to RAID 1
- Basic to RAID 5
- RAID 1 to RAID 5
- RAID 5 to RAID 6
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Volume Expansion with Larger HDDs |
- Synology Hybrid RAID
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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Volume Expansion by Adding a HDD |
- Synology Hybrid RAID
- JBOD
- RAID 5
- RAID 6
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Global Hot Spare Supported RAID Type |
- Synology Hybrid RAID
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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File Protocol |
SMB/AFP/NFS/FTP/WebDAV
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Maximum Concurrent SMB/AFP/FTP Connections |
500
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Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) |
1,000
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Windows Access Control List (ACL) Integration |
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NFS Kerberos Authentication |
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Notes |
- Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
- 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.
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Maximum Local User Accounts |
2,048
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Maximum Local Groups |
256
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Maximum Shared Folder |
256
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Maximum Shared Folder Sync Tasks |
8
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Synology High Availability |
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Syslog Events per Second |
400
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Virtualization |
Virtualization
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VMware vSphere with VAAI |
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Windows Server 2012 |
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Windows Server 2012 R2 |
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Windows Server 2016 |
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Windows Server 2019 |
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Citrix Ready |
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OpenStack |
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Networking Protocols |
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
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Supported Browsers |
- Google Chrome
- Firefox
- Microsoft Edge
- Internet Explorer 11 onwards
- Safari 13 onwards
- Safari (iOS 13.0 onwards)
- Google Chrome (Android 11.0 onwards)
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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
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Maximum Users |
800
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Notes |
- The number of concurrent HTTP connections for Synology Chat was configured to the maximum.
- For tested models with expandable memory, the maximum amount of RAM was installed.
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Cloud Station Server |
Cloud Station Server
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Recommended Number of Hosted Files |
500,000
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Recommended Number of Concurrent Sync Clients |
450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
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Notes |
- The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
- The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
- Non-encrypted shared folders were used during the aforementioned testing.
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Download Station |
Download Station
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Maximum Concurrent Download Tasks |
50
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exFAT Access (Optional) |
exFAT Access (Optional)
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Maximum iSCSI Target Number |
128
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Maximum iSCSI LUN |
256
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iSCSI LUN Clone/Snapshot, Windows ODX |
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DLNA Compliance |
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Facial Recognition |
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Maximum IP cam (Licenses required) |
30 (including 2 Free License) (See All Supported IP Cameras)
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Total FPS (H.264) |
900 FPS @ 720p (1280x720) 480 FPS @ 1080p (1920x1080) 300 FPS @ 3M (2048x1536) 250 FPS @ 5M (2591x1944)
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Total FPS (MJPEG) |
480 FPS @ 720p (1280x720) 300 FPS @ 1080p (1920x1080) 250 FPS @ 3M (2048x1536) 200 FPS @ 5M (2591x1944)
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Notes |
- Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
- The maximum channel number also includes devices installed on Virtual DSM.
- Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).
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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)
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Recommended Number of Concurrent Sync Clients |
450 (the number of connections that can be maintained when the recommended number of hosted files was reached)
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Notes |
- Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
- Utilizing SSD cache can significantly improve performance.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- EXT4 file system and non-encrypted shared folders were used during the aforementioned testing.
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Maximum Users |
400
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Notes |
- Multiple files were opened for testing and each file was edited by 30 users simultaneously.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
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Video Transcoding |
Group 1 - Type 2 (See more)
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Maximum Transcoding Channel Number |
1 channel, 30 FPS @ 720p (1280x720), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1
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Maximum Connections |
20
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