| Hardware Specifications |
| CPU |
| CPU Model |
Intel Celeron J3455 |
| CPU Architecture |
64-bit |
| CPU Frequency |
Quad Core 1.5 burst up to 2.3 GHz |
| Hardware Encryption Engine (AES-NI) |
|
| Hardware Transcoding Engine |
H.264 (AVC), H.265 (HEVC), MPEG-2 and VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30 |
| Memory |
| System Memory |
2 GB DDR3L |
| Memory Module Pre-installed |
2GB (1 x 2GB) |
| Total Memory Slots |
2 |
| Memory Expandable up to |
6 GB (2 GB + 4 GB) |
| Storage |
| Drive Bays |
2 |
| Maximum Drive Bays with Expansion Unit |
7 |
| Compatible Drive Type* (See all supported drives) |
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
|
| Maximum Internal Raw Capacity |
24 TB (12 TB drive x 2) (Capacity may vary by RAID types) |
| Maximum Raw Capacity with Expansion Units |
84 TB (24 TB + 12 TB drive x 5) (Capacity may vary by RAID types) |
| Maximum Single Volume Size |
108 TB |
| Hot Swappable Drive |
|
| Notes |
"Compatible drive type" indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
The maximum single volume size is not directly related to the maximum raw capacity. (Learn more)
Expansion of the internal volume is only supported if the combined single volume size does not exceed the maximum limit of 108TB.
|
| External Ports |
| RJ-45 1GbE LAN Port |
2 (with Link Aggregation / Failover support) |
| USB 3.0 Port |
3 |
| eSATA Port |
1 |
| Copy Button |
|
| File System |
| Internal Drives |
Btrfs
EXT4
|
| External Drives |
Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT*
|
| Notes |
exFAT Access is purchased separately in Package Center. |
| Appearance |
| Size (Height x Width x Depth) |
157 mm x 103.5 mm x 232 mm |
| Weight |
1.74 kg |
| Others |
| System Fan |
92 mm x 92 mm x 1 pcs |
| Fan Speed Mode |
Full-Speed Mode
Cool Mode
Quiet Mode
|
| Brightness adjustable front LED indicators |
|
| Power Recovery |
|
| Noise Level* |
18.4 dB(A) |
| Scheduled Power On/Off |
|
| Wake on LAN/WAN |
|
| Power Supply Unit / Adapter |
65W |
| AC Input Power Voltage |
100V to 240V AC |
| Power Frequency |
50/60 Hz, Single Phase |
| Power Consumption* |
20.1 W (Access)
9.1 W (HDD Hibernation) |
| British Thermal Unit |
68.58 BTU/hr (Access)
31.05 BTU/hr (HDD Hibernation) |
| Environment Temperature |
| Operating Temperature |
5°C to 40°C (40°F to 104°F) |
| Storage Temperature |
-20°C to 60°C (-5°F to 140°F) |
| Relative Humidity |
5% to 95% RH |
| Certification |
FCC
CE
BSMI
EAC
VCCI
CCC
RCM
KC
|
| Notes |
Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s). |
| DSM Specifications ( See more ) |
| Storage Management |
| Maximum Internal Volume Number |
512 |
| Maximum iSCSI Target Number |
32 |
| Maximum iSCSI LUN |
256 |
| iSCSI LUN Clone/Snapshot, Windows ODX |
|
| SSD Read/Write Cache (White Paper) |
|
| SSD TRIM |
|
| Supported RAID Type |
Synology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
|
| RAID Migration |
Basic to RAID 1
Basic to RAID 5 (with Expansion Unit)
RAID 1 to RAID 5 (with Expansion Unit)
RAID 5 to RAID 6 (with Expansion Unit)
|
| Volume Expansion with Larger HDDs |
Synology Hybrid RAID
RAID 1
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
|
| Volume Expansion by Adding a HDD |
Synology Hybrid RAID
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
JBOD (with Expansion Unit)
|
| Global Hot Spare Supported RAID Type |
Synology Hybrid RAID
RAID 1 (with Expansion Unit)
RAID 5 (with Expansion Unit)
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
|
| File Sharing Capacity |
| Maximum Local User Accounts |
2048 |
| Maximum Local Groups |
256 |
| Maximum Shared Folder |
512 |
| Maximum Shared Folder Sync Tasks |
8 |
| Maximum Concurrent CIFS/AFP/FTP Connections |
500 |
| Windows Access Control List (ACL) Integration |
|
| NFS Kerberos Authentication |
|
| High Availability Manager |
|
| Log Center |
|
| Syslog Events per Second |
800 |
| Virtualization |
| VMware vSphere 6 with VAAI |
|
| Windows Server 2012 |
|
| Windows Server 2012 R2 |
|
| Citrix Ready |
|
| OpenStack |
|
| Add-on Packages (learn more about the complete add-on package list) |
| Antivirus by McAfee (Trial) |
|
| Central Management System |
|
| Chat |
|
| Maximum Users |
1500 |
| Notes |
The number of concurrent HTTP connections for 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.
|
| Cloud Station Server |
|
| Maximum Number of Concurrently Connected Devices |
500 |
| Maximum Number of Concurrently Connected Devices (with RAM expansion) |
1500 |
| Maximum Number of Synced Files (btrfs) |
1,000,000 / single file reaction time 862 ms |
| Maximum Number of Synced Files (ext4) |
1,000,000 / single file reaction time 351 ms |
| Notes |
The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time. For more information on file processing capability, please refer to the reaction time for file processing.
File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS. RAM expansion was not used during testing.
Non-encrypted shared folders were used during the aforementioned testing.
|
| Document Viewer |
|
| Download Station |
|
| Maximum Concurrent Download Tasks |
80 |
| Drive |
|
| Maximum Number of Synced Files |
500,000 / single file reaction time 362 ms |
| Maximum Number of Concurrent Connections for PC Clients |
450 |
| Notes |
The Btrfs file system was used for the purpose of testing.
The maximum number of concurrent connections refers to the maximum number of connections that could be maintained when the maximum number of synced files was reached.
File reaction time refers to the preparation time required for other devices to start downloading a 10KByte file from a Synology NAS after the file has been added to the NAS.
For tested models with expandable memory, the maximum amount of RAM was installed.
Non-encrypted shared folders were used during the aforementioned testing.
|
| exFAT Access (optional) |
|
| MailPlus / MailPlus Server |
|
| Free Email Accounts |
5 (Licenses required for additional accounts) |
| Recommended MailPlus Client Number |
Up to 90 (Btrfs) / 90 (ext4) |
| Maximum Server Performance |
831,000 (Btrfs) / 966,000 (ext4) emails per day, approx. 25.4 GB (Btrfs) / 29.5 GB (ext4) |
| Notes |
The CPU and RAM usages were both under 80% when testing recommended client numbers.
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).
|
| Media Server |
|
| DLNA Compliance |
|
| Moments |
|
| Facial recognition |
|
| Subject recognition |
|
| Office |
|
| Maximum Users |
1800 |
| 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
|
| Snapshot Replication |
|
| Maximum Snapshots per Shared Folder |
1024 |
| Maximum Snapshots of all Shared Folder |
65536 |
| Surveillance Station |
|
| Maximum IP cam (Licenses required) |
40 (including 2 Free License) (See All Supported IP Cameras) |
| Total FPS (H.264)* |
1200 FPS @ 720p (1280x720)
800 FPS @ 1080p (1920×1080)
350 FPS @ 3M (2048x1536)
280 FPS @ 5M (2591x1944)
170 FPS @ 4K (3840x2160) |
| Total FPS (H.265)* |
1200 FPS @ 720p (1280x720)
1200 FPS @ 1080p (1920×1080)
600 FPS @ 3M (2048x1536)
480 FPS @ 5M (2591x1944)
200 FPS @ 4K (3840x2160) |
| Total FPS (MJPEG)* |
450 FPS @ 720p (1280x720)
250 FPS @ 1080p (1920×1080)
200 FPS @ 3M (2048x1536)
100 FPS @ 5M (2591x1944) |
| 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. |
| Video Station |
|
| Video Transcoding |
4K Group 1 (See more) |
| Maximum Transcoding Channel Number |
2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1 |
| Virtual Machine Manager |
|
| Maximum Virtual DSM Number (Licenses required) |
2 (including 1 Free License) (Learn more) |
| Notes |
Virtual Machine Manager is not supported on hosts running Synology High Availability. |
| VPN Server |
|
| Maximum Connections |
20 |
| Environment & Packaging |
| Environment |
RoHS Compliant |
| Packaging Content |
Main Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Quick Installation Guide X 1
|
| Optional Accessories |
Surveillance Device License Pack
D3NS1866L-4G RAM Module
Expansion Unit: DX517 X 1
VS360HD
VS960HD
|
