| DSM Specifications |
| Storage Management |
| Maximum Internal Volume Number |
256 |
| Maximum iSCSI Target Number |
256 |
| Maximum iSCSI LUN |
512 |
| iSCSI LUN Clone/Snapshot, Windows ODX |
Yes |
| SSD Read/Write Cache (White Paper) |
Yes |
| SSD TRIM |
Yes |
| RAID Group |
Yes |
| Supported RAID Type |
- RAID F1
- Basic
- JBOD
- RAID 0
- RAID 1
- RAID 5
- RAID 6
- RAID 10
|
| RAID Migration |
- Basic to RAID 1
- Basic to RAID 5
- RAID 1 to RAID 5
- RAID 5 to RAID 6
|
| Volume Expansion with Larger HDDs |
- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
|
| Volume Expansion by Adding a HDD |
- RAID F1
- JBOD
- RAID 5
- RAID 6
|
| Global Hot Spare Supported RAID Type |
- RAID F1
- RAID 1
- RAID 5
- RAID 6
- RAID 10
|
| File Services |
| File Protocol |
CIFS/AFP/NFS/FTP/WebDAV |
| Maximum Concurrent CIFS/AFP/FTP Connections |
4,000 |
| Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) |
10,000 |
| Windows Access Control List (ACL) Integration |
Yes |
| NFS Kerberos Authentication |
Yes |
| Account & Shared Folder |
| Maximum Local User Accounts |
16,000 |
| Maximum Local Groups |
512 |
| Maximum Shared Folder |
512 |
| Maximum Shared Folder Sync Tasks |
32 |
| Synology High Availability |
Yes |
| Log Center |
Yes |
| Syslog Events per Second |
3,000 |
| Virtualization |
| VMware vSphere 6 with VAAI |
Yes |
| Windows Server 2016 |
Yes |
| Citrix Ready |
Yes |
| OpenStack |
Yes |
| Add-on Packages |
| Antivirus by McAfee (Trial) |
Yes |
| Central Management System |
Yes |
| Synology Chat |
Yes |
| Maximum Users |
6,000 |
| 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.
|
| Document Viewer |
Yes |
| exFAT Access (optional) |
Yes |
| Synology MailPlus / MailPlus Server |
Yes |
| Free Email Accounts |
5 (Licenses required for additional accounts) |
| Maximum Number of Concurrent Users |
1,100 |
| Maximum Server Performance |
4,471,000 emails per day, approx. 136GB |
| 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.
- 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).
|
| Snapshot Replication |
Yes |
| Maximum Snapshots per Shared Folder |
1,024 |
| Maximum of System Snapshots |
65,536 |
| Surveillance Station |
Yes |
| Maximum IP cam (Licenses required) |
100 (including 2 Free License) (See All Supported IP Cameras) |
| Total FPS (H.264)* |
3000 FPS @ 720p (1280×720)
2800 FPS @ 1080p (1920×1080)
1200 FPS @ 3M (2048×1536)
700 FPS @ 5M (2591×1944)
500 FPS @ 4K (3840×2160) |
| Total FPS (H.265)* |
3000 FPS @ 720p (1280×720)
3000 FPS @ 1080p (1920×1080)
2400 FPS @ 3M (2048×1536)
1300 FPS @ 5M (2591×1944)
800 FPS @ 4K (3840×2160) |
| Total FPS (MJPEG)* |
1300 FPS @ 720p (1280×720)
700 FPS @ 1080p (1920×1080)
500 FPS @ 3M (2048×1536)
400 FPS @ 5M (2591×1944) |
| 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 |
Yes |
| Recommended Number of Hosted Files |
5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) |
| 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) |
| 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.
|
| Synology Office |
Yes |
| Maximum Users |
3,400 |
| 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
|
| Virtual Machine Manager |
Yes |
| Recommended Virtual Machine Instances |
16 |
| Recommended Virtual DSM Number (Licenses required) |
16 (including 1 Free License) |
| Notes |
- Virtual Machine Manager is not supported on hosts running Synology High Availability.
- The specifications vary depending on system configuration and memory size.
|
| VPN Server |
Yes |
| Maximum Connections |
40 |
| Environment & Packaging |
| Environment |
RoHS Compliant |
| Packaging Content |
- Main Unit X 1
- Accessory Pack X 1
- AC Power Cord X 2
- Quick Installation Guide X 1
|
| Optional Accessories |
|
| Notes |
It is required to use D4RD-2666-16G with identical memory modules of the same capacity and frequency. For more information, visit here. |
