RS819

RackStation RS819

Entry-level rackmount NAS supporting snapshot technology

Fast storage with outstanding computing power

RS819 is a compact and scalable 4-bay rackmount NAS in a 1U form factor. With snapshot technology support, RS819 brings business workgroups simple yet comprehensive solutions to data management, sharing, synchronization and backup.

CPU
64-bit quad-core 1.4 GHz

Ram options
2GB DDR4

Network
Dual 1GbE LAN ports

High Performance
Over 224 MB/s encrypted reading performance

Meet the space-saving rackmount server for deployment

RS819 supports up to 8 drives when connecting with one RX418 expansion unit. Since both RS819 and RX418 are only 12 inches in depth, they can fit perfectly in a 2-post or wall mount rack.

  • Compact chassis design capable of fitting in a 2-post rack
  • The 2-post rack mount is easy to assemble and space-saving, allowing you to set up anywhere
  • Cost-efficient server deployment without unnecessary investment in rail kits and server facilities

Ultimate file management and sharing

File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, RS819 supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.

Next-generation file system for better data protection

The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.

Flexible Shared Folder / User Quota System provides comprehensive quota control on user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

 
File- or folder-level data restoration accelerates data recovery, providing more flexibility for businesses

 
Automatic file self-healing detects and recovers corrupted files without user intervention

Digital asset protection

Powered by Synology DiskStation Manager (DSM), Synology NAS offers advanced security measures to protect against sudden data loss and potential security holes.

Security Advisor

Analyzes system settings, password strength, network preferences, and removes any possible malware.

AppArmor

A kernel-level enhancement that blocks malicious programs from accessing unauthorized system resources.

AES 256-bit encryption

Encrypt shared folders and network data transmission to keep data from unauthorized access.

2-step verification

Prevent others from logging in to your DSM by generating a one-time password (OTP) on your mobile device.

Trust Level

Customize the trust level in Package Center to avoid installing packages from untrusted sources, safeguarding your NAS from unknown or tampered package files.

Engineered for reliability, backed by Synology

RS819 is designed to reliably store your data and is backed by Synology’s three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage.

DSM UI

Award-winning operating system with an intuitive user interface and powerful capabilities.

Public Cloud Integration

Backup and synchronize data easily between your public cloud accounts and your NAS.

Drive

A versatile solution for file management and synchronization.

All-in-one server

Save additional investment by integrating various network services, web/mail services, management applications into your NAS.

Snapshot Replication

Provides schedulable and instantaneous data protection for shared folders and virtual machines on iSCSI LUNs in the event of disaster.

Security

Comprehensive built-in security tools are constantly updated to tackle evolving threats and protect your devices.

Hardware Specifications 
CPU
CPU ModelRealtek RTD1296
CPU Architecture64-bit
CPU FrequencyQuad Core 1.4 GHz
Hardware Encryption Engine
Memory
System Memory2 GB DDR4
NotesSynology 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 Bays4
Maximum Drive Bays with Expansion Unit8
Compatible Drive Type* (See all supported drives)3.5" SATA HDD
2.5" SATA HDD
2.5" SATA SSD
Maximum Internal Raw Capacity56 TB (14 TB drive x 4) (Capacity may vary by RAID types)
Maximum Raw Capacity with Expansion Units112 TB (56 TB + 14 TB drive x 4) (Capacity may vary by RAID types)
Maximum Single Volume Size108 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 Port2 (with Link Aggregation / Failover support)
USB 3.0 Port2
eSATA Port1
File System
Internal DrivesBtrfs
EXT4
External DrivesBtrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT*
NotesexFAT Access is purchased separately in Package Center.
Appearance
Size (Height x Width x Depth)44 mm x 478 mm x 327.5 mm 
Weight4.34 kg 
Rack Installation Support2-post 19" rack (direct mounting)
4-post 19" rack (Synology Rail Kit -  RKM114 / RKS1317 )
Others
System Fan40 mm x 40 mm x 3 pcs
Fan Speed ModeFull-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 / Adapter100W 
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 Hz, Single Phase
Power Consumption*28.31 W (Access) 
10.1 W (HDD Hibernation) 
British Thermal Unit96.6 BTU/hr (Access) 
34.46 BTU/hr (HDD Hibernation) 
Environment Temperature
Operating Temperature5°C to 35°C (40°F to 95°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
CertificationFCC
CE
BSMI
EAC
VCCI
CCC
RCM
Warranty3-year hardware warranty, extendable to 5-year coverage - EW201
NotesPower consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
DSM Specifications ( See more )
Storage Management
Maximum Internal Volume Number64
Maximum iSCSI Target Number128
Maximum iSCSI LUN256
iSCSI LUN Clone/Snapshot, Windows ODX
SSD TRIM
Supported RAID TypeSynology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10
RAID MigrationBasic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6
Volume Expansion with Larger HDDsSynology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10
Volume Expansion by Adding a HDDSynology Hybrid RAID
JBOD
RAID 5
RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID TypeSynology Hybrid RAID
RAID 1
RAID 5
RAID 6 (with Expansion Unit)
RAID 10 (with Expansion Unit)
File Services
File ProtocolCIFS/AFP/NFS/FTP/WebDAV
Maximum Concurrent CIFS/AFP/FTP Connections200
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Account & Shared Folder
Maximum Local User Accounts2048
Maximum Local Groups256
Maximum Shared Folder256
Maximum Shared Folder Sync Tasks4
Log Center
Syslog Events per Second400
Add-on Packages (learn more about the complete add-on package list)
Chat
Maximum Users500
NotesThe 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 Files100000
Recommended Number of Concurrent Sync Clients200
NotesThe 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 Tasks80
exFAT Access (optional)
Media Server
DLNA Compliance
Moments
Facial recognition
Subject recognition
Auto Color & Rotate
Moments Select
Snapshot Replication
Maximum Snapshots per Shared Folder256
Maximum of system snapshots4096
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 (1920×1080) 
240 FPS @ 3M (2048x1536) 
150 FPS @ 5M (2591x1944) 
110 FPS @ 4K (3840x2160)
Total FPS (H.265)*900 FPS @ 720p (1280x720) 
450 FPS @ 1080p (1920×1080) 
360 FPS @ 3M (2048x1536) 
250 FPS @ 5M (2591x1944) 
180 FPS @ 4K (3840x2160)
Total FPS (MJPEG)*300 FPS @ 720p (1280x720) 
200 FPS @ 1080p (1920×1080) 
130 FPS @ 3M (2048x1536) 
80 FPS @ 5M (2591x1944)
NotesSurveillance 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 Files100,000 (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 Clients200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
NotesExceeding 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 Users200
NotesMultiple 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 TranscodingGroup 2 (See more)
VPN Server
Maximum Connections20
Environment & Packaging
EnvironmentRoHS Compliant
Packaging ContentMain Unit X 1
Accessory Pack X 1
AC Power Cord X 1
Quick Installation Guide X 1
Optional AccessoriesSurveillance Device License Pack
Expansion Unit: RX418 X 1
VS360HD
VS960HD
Synology Rail Kit Sliding - RKS1317
Synology Rail Kit Mounted - RKM114