DSM Specifications |
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| Maximum Single Volume Size* | 108 TB |
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| Maximum Internal Volume Number | 64 |
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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
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| Global Hot Spare Supported RAID Type | - Synology Hybrid RAID
- RAID 1
- RAID 5
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| Notes | - Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
- Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
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| File Protocol | SMB/AFP/NFS/FTP/WebDAV |
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| Maximum Concurrent SMB/AFP/FTP Connections | 200 |
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| Windows Access Control List (ACL) Integration | |
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| NFS Kerberos Authentication | |
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| 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. |
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| Maximum Local User Accounts | 1,024 |
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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 | 4 |
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| Maximum Hybrid Share Folders | 5 |
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| Folder and Package Backup | |
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| Syslog Events per Second | 400 |
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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
- Safari
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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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| Notes | For an updated list of supported browser versions, check the DSM Technical Specifications. |
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Download Station | Maximum Concurrent Download Tasks | 80 |
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| Maximum iSCSI Target Number | 128 |
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| Maximum LUN | 256 |
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| LUN Clone/Snapshot, Windows ODX | |
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| DLNA Compliance | |
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| Facial Recognition | |
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| Maximum Snapshots per Shared Folder | 256 |
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| Maximum of System Snapshots | 4,096 |
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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 (1280×720)
600 FPS @ 1080p (1920×1080)
300 FPS @ 3M (2048×1536)
200 FPS @ 5M (2591×1944)
150 FPS @ 4K (3840×2160) |
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| Total FPS (H.265) | 900 FPS @ 720p (1280×720)
800 FPS @ 1080p (1920×1080)
500 FPS @ 3M (2048×1536)
450 FPS @ 5M (2591×1944)
200 FPS @ 4K (3840×2160) |
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| Notes | - Maximum IP cameras and FPS figures are tested with the device fully populated with drives and under a continuous recording setup.
- Actual system capabilities may differ depending on system configuration, drive performance, number of features enabled, and if additional workloads are present.
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| Recommended Number of Concurrent Sync Clients | 200 (the number of connections that can be maintained when the recommended number of hosted files was reached) |
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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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| Notes | - Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
- Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
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| Maximum Users | 200 |
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| Notes | - Multiple files were opened for testing and each file was edited by 30 users simultaneously.
- Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
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| Maximum Connections | 20 |
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