Refurbished RackStation RS819

Entry-level rackmount NAS supporting snapshot technology

Synology Certified Refurbished

Access Synology solutions in a cost-effective and environmentally responsible way. All certified refurbished products are put through extensive testing, comply with stringent quality standards, and come with a 2-year warranty.

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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.

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CPU

64-bit quad-core 1.4 GHz

Memory

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

Meet the space-saving rackmount server for deployment

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.

Btrfs: Next generation storage efficiency

The Btrfs file system introduces cutting-edge 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. Learn more

Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders
Snapshot Replication provides schedulable and storage capacity-saving data protection with 256 shared folder backups and 4,096 system-wide snapshots
File or folder level data restoration makes data recovery fast and flexible
Automatic file self-healing detects and recovers corrupted files without user intervention

Next-generation file system for better data protection

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. Learn more

Security Advisor

Analyze system settings, password strength and network preferences, and remove 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 avoid unauthorized data access.

2-step verification

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

Powered by Synology DSM

DSM UI

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

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Public Cloud Integration

Back up and synchronize data easily between public cloud accounts and your NAS.

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Synology Drive

Instantly access your NAS files across multiple devices whenever you want, wherever you are.

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All-in-one server

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

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Snapshot Replication

Schedulable and instantaneous data protection of shared folders and iSCSI LUNs for quick disaster recovery.

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Security

Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.

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Hardware Overview

1Power button and indicator
2LAN indicator
3Drive status indicator
4Beep off button

5Status indicator
6Drive tray
7Console port
8System fan

9Power port
101GbE RJ-45 port
11USB 3.0 port
12eSATA port

13Reset button

Hardware Specifications
CPU
CPU	CPU Model	Realtek RTD1296
	CPU Quantity	1
	CPU Core	4
	CPU Architecture	64-bit
	CPU Frequency	1.4 GHz
	Hardware Encryption Engine
Memory
Memory	System Memory	2 GB DDR4 non-ECC
	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
Storage	Drive Bays	4
	Maximum Drive Bays with Expansion Unit	8 (RX418 x 1)
	Drive Type (See all supported drives)	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD
	Hot Swappable Drive*
External Ports
External Ports	RJ-45 1GbE LAN Port	2
	USB 3.2 Gen 1 Port*	2
	Expansion Port	1
	Expansion Port Type	eSATA
	Notes	The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
Appearance
Appearance	Form Factor (RU)	1U
	Size (Height x Width x Depth)	44 mm x 478 mm x 327.5 mm
	Weight	4.34 kg
	Rack Installation Support*	4-post 19" rack (Synology Rail Kit - RKM114/RKS-02) 2-post 19" rack (direct mounting)
	Notes	The rail kit is sold separately
Others
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	100 watts
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	28.31 watts (Access) 10.1 watts (HDD Hibernation)
	British Thermal Unit	96.6 BTU/hr (Access) 34.46 BTU/hr (HDD Hibernation)
	Notes	Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Temperature
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
Certification	FCC CE BSMI EAC CCC KC BIS VCCI RCM
Warranty
Warranty	2 Years
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment
Environment	RoHS Compliant
Packaging Content
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Cord X 1 Quick Installation Guide X 1
Optional Accessories
Optional Accessories	Expansion Units: RX418 Plus Series 3.5" SATA HDD: HAT3300 Series Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114* Surveillance Device License Pack
	Notes	Certain items may not be available in your location. Please contact your local distributors for more information.

DSM Specifications
Storage Management
Storage Management	Maximum Single Volume Size	108 TB
	Maximum Internal Volume Number	64
	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)
	Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 (with Expansion Unit) RAID 10 (with Expansion Unit)
	Notes	Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. Each internal volume (may consist of multiple drives) is expandable up to 108TB.
File System
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
	Notes	exFAT Access can be installed for free from Package Center in DSM 7.0. In DSM 6.2 or earlier versions, exFAT Access needs to be purchased in Package Center.
File Services
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Concurrent SMB/AFP/FTP Connections	200
	Windows Access Control List (ACL) Integration
	NFS Kerberos Authentication
	Notes	The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.
Account & Shared Folder
Account & Shared Folder	Maximum Local User Accounts	2,048
	Maximum Local Groups	256
	Maximum Shared Folder	256
	Maximum Shared Folder Sync Tasks	4
Hybrid Share
Hybrid Share	Maximum Hybrid Share Folders	5
Hyper Backup
Hyper Backup	Folder and Package Backup
Log Center
Log Center
Log Center	Syslog Events per Second	400
General Specifications
General Specifications	Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported Browsers	Chrome Firefox Edge Safari
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Synology Chat
Synology Chat
Download Station
Download Station
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager
SAN Manager
SAN Manager	Maximum iSCSI Target Number	128
	Maximum LUN	256
	LUN Clone/Snapshot, Windows ODX
	Notes	iSCSI Manager has been renamed to SAN Manager in DSM 7.0.
Media Server
Media Server
Media Server	DLNA Compliance
Synology Photos
Synology Photos
Synology Photos	Facial Recognition
Snapshot Replication
Snapshot Replication
Snapshot Replication	Maximum Snapshots per Shared Folder	256
	Maximum of System Snapshots	4,096
Surveillance Station
Surveillance Station
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	1080p: 30 channels, 300 FPS 3M: 24 channels, 240 FPS 5M: 15 channels, 150 FPS 4K: 11 channels, 110 FPS
	Suggested Maximum IP Cameras and Total FPS (H.265)	1080p: 30 channels, 450 FPS 3M: 30 channels, 360 FPS 5M: 25 channels, 250 FPS 4K: 18 channels, 180 FPS
	Notes	Performance figures are obtained from testing conducted with the device fully populated with drives, with their default memory configuration, and under a continuous recording setup. Actual system capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads. Use NVR Selector to quickly find a suitable model based on your requirements. The number of streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
Synology Drive
Synology Drive
Synology Drive	Recommended Number of Concurrent Sync Clients	200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
	Recommended Number of Hosted Files	500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
	Notes	Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Synology Office
Synology Office	Suggested Users	200
	Notes	Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
VPN Server
VPN Server
VPN Server	Maximum Connections	20

Notes: Model specifications are subject to change without prior notice. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.