| DSM Specifications |
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| Storage Management |
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| Storage Management | Maximum Single Volume Size | 1 PB (for RAID 6 groups only) 200 TB 108 TB |
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| Maximum Internal Volume Number | 32 |
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| SSD Read/Write Cache (Determining cache size) | |
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| SSD TRIM | |
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| Storage Efficiency | |
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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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| Notes | Volumes over 108 TB require 32 GB of memory or more. Certain conditions are required to support a 1 PB volume. Please refer to this article for more information. 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. Storage efficiency helps reduce storage space consumption through deduplication and compression. For more information about this feature and its support requirements, please refer to this article . |
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| File System |
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| File System | Internal Drives | Btrfs |
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| External Drives | Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT |
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| File Services |
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| File Services | File Protocol | SMB AFP NFS FTP WebDAV Rsync |
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| Maximum Number of SMB Connections (FSCT-Based) | 10,000 |
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| Windows Access Control List (ACL) Integration | |
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| NFS Kerberos Authentication | |
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| Notes | Connection value of this model is tested with Synology SATA SSD fully populated and up to four 10GbE network ports Models with expandable memory are tested with the maximum supported quantity installed. 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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| Account & Shared Folder |
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| Account & Shared Folder | Maximum Local User Accounts | 15,360 |
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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 |
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| Hybrid Share |
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| Hybrid Share | Maximum Hybrid Share Folders | 30 |
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| Hyper Backup |
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| Hyper Backup | Folder and Package Backup | |
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| Entire System Backup | |
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| High Availability |
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| High Availability | Synology High Availability | |
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| Log Center |
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| Log Center | Syslog Events per Second | 3,000 |
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| Virtualization |
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| Virtualization | VMware vSphere | ESXi 8.0 U2, ESXi 8.0 U1, ESXi 8.0, ESXi 7.0 U3, ESXi 7.0 U2, ESXi 7.0 U1, ESXi 7.0, ESXi 6.7 U3, ESXi 6.7 U2, ESXi 6.7 U1, ESXi 6.7, ESXi 6.5 U3, ESXi 6.5 U2, ESXi 6.5 U1, ESXi 6.5 |
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| Microsoft Hyper-V | Windows Server 2025, Windows Server 2022 |
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| Citrix XenServer | XenServer 8.4, XenServer 8, Citrix Hypervisor 8.2 LTSR CU1 |
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| OpenStack | Cinder |
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| General Specifications |
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| General Specifications | Supported Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, Fibre Channel, 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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| Add-on Packages view the complete package list |
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| Central Management System |
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| Central Management System | |
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| Synology AI Console |
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| Synology AI Console | Third-Party AI Model Integration | |
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| Maximum De-Identification Rate | 12,000 words per second |
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| Notes | De-identification performance measurement: Filters for Credit Card Numbers, IBAN, Individual Taxpayer Identification Number, SSN, and Names applied to a 4,355-word English text. To enable de-identification, your device must have at least 8 GB of memory and Container Manager installed. |
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| Synology Chat |
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| Synology Chat | Maximum Number of Users | 1,500 |
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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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| Download Station | Maximum Concurrent Download Tasks | 80 |
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| SAN Manager |
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| SAN Manager | Maximum iSCSI Target Number | 256 |
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| Maximum LUN | 512 |
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| LUN Clone/Snapshot, Windows ODX | |
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| Synology MailPlus / MailPlus Server |
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| Synology MailPlus / MailPlus Server | Free Email Accounts | 5 (Additional accounts require purchase of licenses) |
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| Maximum Number of Users | 25,000 |
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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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| Media Server |
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| Media Server | DLNA Compliance | |
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| Synology Photos |
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| Synology Photos | Facial Recognition | |
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| Object Recognition | |
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| Snapshot Replication |
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| Snapshot Replication | Maximum Snapshots per Shared Folder | 1,024 |
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| Maximum Snapshots per LUN | 256 |
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| Maximum Snapshots per System | 65,536 |
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| Maximum Replication Tasks for Shared Folders | 128 |
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| Maximum Replication Tasks for LUNs | 64 |
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| Maximum Replication Tasks per System | 128 |
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| Surveillance Station |
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| Surveillance Station | Default Licenses | 2 (Additional cameras require purchase of licenses) |
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| Maximum IP Cameras and Total FPS (H.264) | 1080p: 400 channels, 4000 FPS 3M: 300 channels, 3000 FPS 5M: 200 channels, 2000 FPS 4K: 150 channels, 1500 FPS |
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| Maximum IP Cameras and Total FPS (H.265) | 1080p: 450 channels, 13500 FPS 3M: 400 channels, 4000 FPS 5M: 300 channels, 3000 FPS 4K: 200 channels, 2000 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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution. The values above are based on testing with RTSP streaming. If SRTP is enabled for all cameras, overall performance will decrease to 70% of the stated figures. |
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| Synology Drive |
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| Synology Drive | Maximum Number of Users | 37,300 |
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| Maximum Number of Hosted Files | 100,000,000 (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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| 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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| Synology Office |
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| Synology Office | Maximum Number of Users | 36,200 |
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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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| Virtual Machine Manager |
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| Virtual Machine Manager | Recommended Virtual Machine Instances | 32 (Learn more) |
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| Recommended Virtual DSM Number (Licenses required) | 32 (including 1 Free License) |
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| Notes | The specifications vary depending on system configuration and memory size. |
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| VPN Server |
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| VPN Server | Maximum Connections | 32 |
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