DSM Specifications
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Storage Management
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Storage Management
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Maximum Internal Volume Number |
128 |
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Maximum iSCSI Target Number |
256 |
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Maximum iSCSI LUN |
512 |
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iSCSI LUN Clone/Snapshot, Windows ODX |
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SSD Read / Write Cache (White Paper) |
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SSD TRIM |
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RAID Group |
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Supported RAID Type |
- RAID F1
- 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 |
- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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Volume Expansion by Adding a HDD |
- RAID F1
- JBOD
- RAID 5
- RAID 6
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Global Hot Spare Supported RAID Type |
- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
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File Services
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File Services
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File Protocol |
CIFS/AFP/NFS/FTP/WebDAV |
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Maximum Concurrent CIFS/AFP/FTP Connections |
2,000 |
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Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) |
10,000 |
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Windows Access Control List (ACL) Integration |
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NFS Kerberos Authentication |
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Account & Shared Folder
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Account & Shared Folder
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Maximum Local User Accounts |
16,000 |
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Maximum Local Groups |
512 |
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Maximum Shared Folder |
512 |
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Maximum Shared Folder Sync Tasks |
32 |
High Availability
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High Availability
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Synology High Availability |
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Log Center
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Log Center
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Log Center
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Syslog Events per Second |
3,000 |
Virtualization
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Virtualization
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VMware vSphere 6 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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Citrix Ready |
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OpenStack |
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General Specifications
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General Specifications
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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 |
- Chrome
- Firefox
- Edge
- Internet Explorer 10 onwards
- Safari 10 onwards
- Safari (iOS 10 onwards)
- Chrome (Android 6.0 onwards)
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Supported Language |
English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, ?eský, ???????, ???, ???, ????, ???? |
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Antivirus by McAfee (Trial)
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Antivirus by McAfee (Trial)
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Central Management System
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Central Management System
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Synology Chat
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Synology Chat
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Synology Chat
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Maximum Users |
4,000 |
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Notes |
- The number of concurrent HTTP connections for Synology Chat was configured to the maximum.
- CPU and RAM usage were both under 80% when the number of maximum users was reached.
- For tested models with expandable memory, the maximum amount of RAM was installed.
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Cloud Station Server
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Cloud Station Server
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Cloud Station Server
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Recommended Number of Hosted Files |
3,000,000 |
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Recommended Number of Concurrent Sync Clients |
2,000 (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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Document Viewer
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Document Viewer
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Download Station
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Download Station
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Download Station
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Maximum Concurrent Download Tasks |
80 |
exFAT Access (Optional)
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exFAT Access (Optional)
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Synology MailPlus / MailPlus Server
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Synology MailPlus / MailPlus Server
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Synology MailPlus / MailPlus Server
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Free Email Accounts |
5 (Licenses required for additional accounts) |
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Maximum Number of Concurrent Users |
500 |
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Maximum Server Performance |
3,595,000 emails per day, approx. 109GB |
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Notes |
- The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Read-write SSD cache was enabled in 5-bay (and above) NAS models with 2 SSDs units installed.
- The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
- Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
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Media Server
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Media Server
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Media Server
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DLNA Compliance |
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Moments
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Moments
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Moments
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Facial Recognition |
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Subject Recognition |
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Auto Color & Rotate |
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Moments Select |
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PetaSpace
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PetaSpace
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Snapshot Replication
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Snapshot Replication
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Snapshot Replication
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Maximum Snapshots per Shared Folder |
1,024 |
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Maximum of System Snapshots |
65,536 |
Surveillance Station
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Surveillance Station
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Surveillance Station
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Maximum IP cam (Licenses required) |
75 (including 2 Free License) (See All Supported IP Cameras) |
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Total FPS (H.264)* |
2250 FPS @ 720p (1280x720)
2100 FPS @ 1080p (1920x1080)
1500 FPS @ 3M (2048x1536)
900 FPS @ 5M (2591x1944)
550 FPS @ 4K (3840x2160) |
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Total FPS (H.265)* |
2250 FPS @ 720p (1280x720)
2250 FPS @ 1080p (1920x1080)
2250 FPS @ 3M (2048x1536)
1500 FPS @ 5M (2591x1944)
900 FPS @ 4K (3840x2160) |
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Total FPS (MJPEG)* |
750 FPS @ 720p (1280x720)
375 FPS @ 1080p (1920x1080)
250 FPS @ 3M (2048x1536)
180 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. |
Synology Drive
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Synology Drive
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Synology Drive
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Recommended Number of Hosted Files |
3,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) |
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Recommended Number of Concurrent Sync Clients |
1,800 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
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Notes |
- For tested models with expandable memory, the maximum amount of RAM was installed.
- Exceeding the limits above may result in longer response time in file operations.
- Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
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Synology Office
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Synology Office
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Synology Office
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Maximum Users |
2,900 |
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Notes |
- Multiple files were opened for testing and each file was edited by 30 users simultaneously.
- CPU and RAM usage were both under 80% when the number of maximum users was reached.
- 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 Station
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Video Station
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Video Station
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Video Transcoding |
Group 1 - Type 1 (See more) |
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Maximum Transcoding Channel Number |
1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1 |
Virtual Machine Manager
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Virtual Machine Manager
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Virtual Machine Manager
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Recommended Virtual Machine Instances |
8 (Learn more) |
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Recommended Virtual DSM Number (Licenses required) |
8 (including 1 Free License) |
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Notes |
- Virtual Machine Manager is not supported on hosts running Synology High Availability.
- The specifications vary depending on system configuration and memory size.
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VPN Server
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VPN Server
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VPN Server
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Maximum Connections |
40 |