Hardware Specifications
CPU
CPU Model Realtek RTD1296
CPU Architecture 64-bit
CPU Frequency Quad Core 1.4 GHz
Hardware Encryption Engine
Memory
System Memory 2 GB DDR4
Notes Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
Storage
Drive Bays 4
Maximum Drive Bays with Expansion Unit 8
Compatible Drive Type* (See all supported drives)
3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity 56 TB (14 TB drive x 4) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units 112 TB (56 TB + 14 TB drive x 4) (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 raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)
External Ports
RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support)
USB 3.0 Port 2
eSATA Port 1
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) 44 mm x 478 mm x 327.5 mm
Weight 4.34 kg
Rack Installation Support
2-post 19" rack (direct mounting)
4-post 19" rack (Synology Rail Kit - RKM114/RKS1317)
Notes The rail kit is sold separately.
Others
System Fan 40 mm x 40 mm x 3 pcs
Fan Speed Mode
Full-Speed Mode
Cool Mode
Quiet Mode
Power Recovery
Noise Level* 28.9 dB(A)
Scheduled Power On/Off
Wake on LAN/WAN
Power Supply Unit / Adapter 100W
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60Hz, Single Phase
Power Consumption* 28.31 W (Access)
10.1 W (HDD Hibernation)
British Thermal Unit 96.6 BTU/hr (Access)
34.46 BTU/hr (HDD Hibernation)
Temperature
Operating Temperature 5°C to 35°C (40°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH
Certification
EAC
VCCI
CCC
RCM
FCC
CE
BSMI
Warranty 3-year hardware warranty, extendable to 5-year coverage - EW201
Notes
The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
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 256
Maximum iSCSI Target Number 10
Maximum iSCSI LUN 10
iSCSI LUN Clone/Snapshot, Windows ODX
SSD TRIM
Supported RAID Type
Synology Hybrid RAID
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
Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
Volume Expansion by Adding a HDD
Synology Hybrid RAID
JBOD
RAID 5
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
Global Hot Spare Supported RAID Type
Synology Hybrid RAID
RAID 1
RAID 5
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
File Services
File Protocol CIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections 200
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Account & Shared Folder
Maximum Local User Accounts 2,048
Maximum Local Groups 256
Maximum Shared Folder 256
Maximum Shared Folder Sync Tasks 4
Log Center
Syslog Events per Second 400
Add-on Packages (learn more about the complete add-on package list)
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
Recommended Number of Hosted Files 100,000
Recommended Number of Concurrent Sync Clients 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
Non-encrypted shared folders were used during the aforementioned testing.
Download Station
Maximum Concurrent Download Tasks 80
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Snapshot Replication
Maximum Snapshots per Shared Folder 256
Maximum of system snapshots 4,096
Surveillance Station
Maximum IP cam (Licenses required) 30 (including 2 Free License) (See All Supported IP Cameras)
Total FPS (H.264)* 900 FPS @ 720p (1280x720)
300 FPS @ 1080p (1920x1080)
240 FPS @ 3M (2048x1536)
150 FPS @ 5M (2591x1944)
110 FPS @ 4K (3840x2160)
Total FPS (H.265)* 900 FPS @ 720p (1280x720)
450 FPS @ 1080p (1920x1080)
360 FPS @ 3M (2048x1536)
250 FPS @ 5M (2591x1944)
180 FPS @ 4K (3840x2160)
Total FPS (MJPEG)* 300 FPS @ 720p (1280x720)
200 FPS @ 1080p (1920x1080)
130 FPS @ 3M (2048x1536)
80 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.
Synology Drive
Recommended Number of Hosted Files 100,000 (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 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Notes
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
Maximum Users 200
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.
Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Video Station
Video Transcoding Group 2 (See more)
VPN Server
Maximum Connections 20
Environment & Packaging
Environment RoHS Compliant
Packaging Content
Main Unit X 1
Accessory Pack X 1
AC Power Cord X 1
Quick Installation Guide X 1
Optional Accessories
Surveillance Device License Pack
Expansion Unit: RX418 X 1
Synology Rail Kit Sliding - RKS1317
Synology Rail Kit Mounted - RKM114
VS360HD

Synology RackStation RS819 is a compact and scalable 4-bay rackmount NAS in 1U form factor. Powered by Synology DiskStation Manager with snapshot technology support, RS819 brings business workgroups simple yet comprehensive solutions to data management, sharing, synchronization and backup. Synology RS819 is backed by Synology's 3-year limited warranty.Warranty Extension to 5 Years with the additional purchase of the EW201.
⚫Scalable 4-bay 1U rackmount NAS for business workgroups
⚫Encryption performance at over 224 MB/s reading, 152 MB/s writing
⚫64-bit quad-core 1.4GHz processor
⚫Dual 1GbE LAN with failover and Link Aggregation support
⚫12-inch depth allows for ultra-dense installation
⚫Optional Accessories - Camera License Pack, VS360HD, VS960HD, Synology Rail Kit Sliding (RKS1317), Synology Rail Kit Mounted (RKM114), expansion unit (RX418)
⚫Surveillance Station - Maximum IP camera: 30 (Including two free camera licenses. Procurement of additional licenses is required.)
⚫Supported RAID Type - Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
⚫Model backed with Synology Replacement Service (SRS) - Conditions apply. Refer to the Synology Website
⚫Additional Service and Warranty Packages available - ASK your MMT Account Manager for more details.(Service must be purchased with 30 days of the NAS purchase)