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DSM Specifications
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Maximum Single Volume Size |
- 200 TB (32 GB memory required)
- 108 TB
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Maximum Internal Volume Number |
32 |
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M.2 SSD Storage Pool Support* |
V |
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SSD Read/Write Cache (Determining
cache size) |
V |
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SSD TRIM |
V |
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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 (with Expansion Unit)
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Global Hot Spare Supported RAID Type |
- Synology Hybrid RAID
- RAID 1
- RAID 5
- RAID 6 (with Expansion Unit)
- RAID 10 (with Expansion Unit)
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Notes |
- Volumes over 108 TB require 32 GB of memory or more.
- Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
- 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.
- Creating M.2 storage pools requires the use of Synology-verified SSDs, which are rigorously tested under extreme temperature conditions. Thermal parameters for SSDs and NAS units are fine-tuned
to ensure optimal management of thermal conditions under I/O-intensive environments. (Learn more)
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Internal Drives |
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External Drives |
- Btrfs
- ext4
- ext3
- FAT32
- NTFS
- HFS+
- exFAT
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File Protocol |
- SMB
- AFP
- NFS
- FTP
- WebDAV
- Rsync
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Maximum Number of SMB Connections (FSCT-Based) with RAM Expansion |
40 |
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Windows Access Control List (ACL) Integration |
V |
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NFS Kerberos Authentication |
V |
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Notes |
- Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
- SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration:
- Test workload: HomeFolder scenario provided by the FSCT tool
- Test duration: 600 seconds
- Domain controller & FSCT controller: Windows Server 2022
- FSCT clients: 8 × Windows 10 machines
- SMB feature: Directory leasing enabled
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Maximum Local User Accounts |
512 |
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Maximum Local Groups |
128 |
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Maximum Shared Folder |
128 |
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Maximum Shared Folder Sync Tasks |
8 |
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Maximum Hybrid Share Folders |
10 |
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Folder and Package Backup |
V |
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Entire System Backup |
V |
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Synology High Availability |
V |
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Syslog Events per Second |
800 |
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Virtualization
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VMware ESXi 6.5 and VAAI |
V |
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Windows Server 2022 |
V |
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Citrix Ready |
V |
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OpenStack |
V |
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Supported 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
- Safari
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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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Notes |
For an updated list of supported browser versions, check the DSM Technical
Specifications. |
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V |
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Maximum Number of Users |
150 |
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Notes |
- Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds.
- Models with expandable memory are tested with the maximum supported quantity installed.
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Download Station
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Maximum Concurrent Download Tasks |
80 |
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Maximum iSCSI Target Number |
2 |
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Maximum LUN |
2 |
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LUN Clone/Snapshot, Windows ODX |
V |
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Free Email Accounts |
5 (Additional accounts require purchase of licenses) |
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Maximum Number of Users |
90 |
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Notes |
- The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users
receiving 20 emails per day. Learn more
- Models with SSD support are tested with a single SSD volume.
- Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
- Operating in high-availability mode will incur additional overhead.
- Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
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DLNA Compliance |
V |
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Facial Recognition |
V |
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Object Recognition |
V |
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Maximum Snapshots per Shared Folder |
128 |
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Maximum of System Snapshots |
256 |
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Default Licenses |
2 (Additional cameras require purchase of licenses) |
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Suggested Maximum IP Cameras and Total FPS (H.264) |
- 1080p: 40 channels, 1050 FPS
- 3M: 40 channels, 600 FPS
- 5M: 30 channels, 360 FPS
- 4K: 20 channels, 200 FPS
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Suggested Maximum IP Cameras and Total FPS (H.265) |
- 1080p: 40 channels, 1200 FPS
- 3M: 40 channels, 1000 FPS
- 5M: 40 channels, 600 FPS
- 4K: 30 channels, 300 FPS
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Notes |
- Performance figures are obtained from testing conducted with the device fully populated with drives, with their default memory configuration, and under a continuous recording setup. Actual system
capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads.
- Use NVR Selector to quickly find a suitable model based on your requirements.
- The number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under
H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
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Maximum Number of Users |
80 |
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Maximum 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 |
- The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but
idle. Learn more
- Models with SSD support are tested with a single SSD volume.
- Models with expandable memory are tested with the maximum supported quantity installed.
- 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 Number of Users |
80 |
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Notes |
- The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and
viewing a file. Learn more
- Models with SSD support are tested with a single SSD volume.
- Models with expandable memory are tested with the maximum supported quantity installed.
- Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
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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 |
The specifications vary depending on system configuration and memory size. |
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Maximum Connections |
8 |