CPU

CPU Model

Realtek RTD1296

CPU Architecture

64-bit

CPU Frequency

Quad Core 1.4 GHz

Hardware Encryption Engine

Yes

Hardware Transcoding Engine

10-bit H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30

Memory

System Memory

1 GB DDR4

Storage

Drive Bays

2

Compatible Drive Type

3.5" SATA HDD
2.5" SATA HDD (with optional 2.5" Disk Holder)
2.5" SATA SSD (with optional 2.5" Disk Holder)

Maximum Internal Raw Capacity

24 TB (12 TB drive x 2) (Capacity may vary by RAID types)

Maximum Single Volume Size

108 TB

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.

External Ports

RJ-45 1GbE LAN Port

1

USB 3.0 Port

2

File System

Internal Drives

EXT4

External Drives

EXT4
EXT3
FAT
NTFS
HFS+
exFAT*

Notes

exFAT Access is purchased separately in Package Center.

Appearance

Size (Height x Width x Depth)

165 mm x 100 mm x 225.5 mm

Weight

0.87 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

Yes

Power Recovery

Yes

Noise Level*

19.9 dB(A)

Scheduled Power On/Off

Yes

Wake on LAN/WAN

Yes

Power Supply Unit / Adapter

60W

AC Input Power Voltage

100V to 240V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption*

16.79 W (Access)
5.16 W (HDD Hibernation)

British Thermal Unit

57.29 BTU/hr (Access)
17.61 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 Class B
CE Class B
BSMI Class B

Storage Management

Maximum Internal Volume Number

256

Maximum iSCSI Target Number

10

Maximum iSCSI LUN

10

Supported RAID Type

Synology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID Migration
Basic to RAID 1
Volume Expansion with Larger HDDs
Synology Hybrid RAID
RAID 1
Volume Expansion by Adding a HDD
Synology Hybrid RAID

SSD Support

SSD TRIM

Yes

File Sharing Capacity

Maximum Local User Accounts

2048

Maximum Local Groups

256

Maximum Shared Folder

256

Maximum Shared Folder Sync Tasks

4

Maximum Concurrent CIFS/AFP/FTP Connections

200

Windows Access Control List (ACL) Integration

Yes

NFS Kerberos Authentication

Yes

Log Center

Syslog Events per Second

400

Chat

Maximum Users

500

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.

Cloud Station Server

Maximum Number of Concurrently Connected Devices

200

Maximum Number of Synced Files (ext4)

200,000 / single file reaction time 687 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 1KByte 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.

Download Station

Yes

Maximum Concurrent Download Tasks

50

exFAT Access (optional)

Yes

Media Server

DLNA Compliance

Yes

Office

Maximum Users

100

Maximum Simultaneous Editing Users

30

Notes

- 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

Surveillance Station

Maximum IP cam (Licenses required)

15

Total FPS (H.264)*

450 FPS @ 720p (1280x720)
180 FPS @ 1080p (1920×1080)
110 FPS @ 3M (2048x1536)
80 FPS @ 5M (2591x1944)
40 FPS @ 4K (3840x2160)
Total FPS (H.265)*
450 FPS @ 720p (1280x720)
450 FPS @ 1080p (1920×1080)
210 FPS @ 3M (2048x1536)
120 FPS @ 5M (2591x1944)
60 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*
210 FPS @ 720p (1280x720)
70 FPS @ 1080p (1920×1080)
50 FPS @ 3M (2048x1536)
30 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 3 (See more)

Maximum Transcoding Channel Number

1 channel, 30 FPS @ 4K (4096 x 2160), H.265 (HEVC), 10-bit or
1 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1

VPN Server

Maximum Connections

15

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 1
Quick Installation Guide X 1