RackStation RS422+

Compact and versatile storage for home and office

Trusted by professionals across all industries.

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Streamline your data management

With its compact 1U form factor and powerful Synology DiskStation Manager (DSM) operating system, the 4-bay Synology RackStation RS422+ is an affordable all-in-one solution for small businesses and home lab owners looking to meet their daily data management, sharing, synchronization, and backup needs.

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Performance601/516 MB/s sequential read/write throughput

Form FactorDepth of just 327.5 mm with handles

ConnectivityBuilt-in dual 1GbE ports with easy 10GbE option

File IntegrityECC memory prevents data corruption

Space-saving design for flexible deployment

Thanks to its compact 1U chassis, the RS422+ fits perfectly in a 2-post or wall mount rack. Deploy it in space-limited environments or anywhere else without investing in costly railkits or other server equipment.

Flexible networking options

Leverage built-in connectivity to integrate the RS422+ into any IT environment, or expand its capabilities by adding plug-and-play modules.

Built-in connectivity

Dual Gigabit ports with support for network failover and load balancing deliver fast and dependable performance out of the box.

Easy upgrade to 10GbE

Add an E10G22-T1-Mini Network Upgrade Module through the easily accessible slot to instantly enable faster networking.

All-in-one data management platform

The RS422+ is designed to support small deployments in tackling common applications such as file management, data backup, and surveillance.

Edge storage for distributed teams

Multi-endpoint data protection

Smart surveillance for small deployments

Edge storage for distributed teams

Provide secure and convenient multi-platform file access, sharing, and synchronization across different locations.

Private file cloud

Enable effective collaboration with Synology Drive

Synology Drive provides remote data access, synchronization, on-demand file restoration, and backup via handy desktop and mobile applications. Learn more

Multi-platform support

Access personal and shared data from mobile app, desktop client, web browser, or another Synology system: Any changes you make are automatically synced to other devices as soon as they are connected.

Collaborate in real time

Integrate with Synology Office to enable concurrent editing on documents, spreadsheets, and slides, with support for conversion to and from Microsoft Word, Excel, PowerPoint, and OpenDocument files. Learn more

Efficient multi-site synchronization

Connect teams with Hybrid Share

Utilize Hybrid Share to store large sets of data in the cloud, leveraging the powerful bandwidth of our data centers to stream requested files to local NAS deployed at the branch offices.

Learn more

Data on demand

With Hybrid Share-enabled folders, remote teams retain full access to the most up-to-date files while benefiting from reduced local storage footprint and bandwidth usage.

Cache data used locally

Frequently accessed files are kept on the local NAS, allowing users to access them at LAN speeds. Files and folders can also be pinned manually to prevent them from being replaced when the cache is full.

Multi-endpoint data protection

Design an effective backup strategy to maximize system availability with a host of native and license-free solutions.

Consolidated backup server

Endpoint, VM, and NAS/SAN protection

Securely back up Windows and Linux endpoints, Synology servers, and VMware^® and Hyper-V^® virtual machines with Active Backup for Business. Learn more

Microsoft 365 and Google Workspace

Centralize backups of Microsoft 365 and Google Workspace data to protect it from accidents and simplify compliance with data retention policies. Schedulable backups, flexible file versioning, and block-level deduplication ensure flexibility and savings in terms of storage and bandwidth consumption. Learn more

Data protection and recovery

Hyper Backup

Back up files, LUNs, installed applications, and system configurations to destinations including Synology C2 Storage, public cloud platforms, USB devices, file servers, local folders, or other Synology systems.

Set and forget backup tasks with regular schedules, enhance security with fine-grained user permissions and encryption, keep backup sizes small with built-in deduplication, and restore data flexibly with multi-versioning. Learn more

Snapshot Replication

Snapshot Replication enables configurable point-in-time snapshots of shared folders and VM storage with an RPO as low as 5 minutes and recovery within seconds. Learn more

Smart surveillance for small deployments

Leverage flexible deployment options, intuitive management capabilities, and advanced video analytics to secure your premises.

Simple-to-deploy local surveillance

Wide compatibility

Connect up to 40 IP cameras from a selection of over 8,300 validated models thanks to Synology Surveillance Station's wide camera compatibility.

Multi-platform convenience

Monitor live streams or watch recordings from web browser, desktop client, or the DS cam mobile app.

Secure and private

Footage is stored locally for easier compliance with data protection regulations and further protected from unauthorized access with industry-standard AES-256 encryption.

Flexible monitoring of multiple locations

Assisted mass deployment

Automatically locate new cameras within a set IP range, and configure units in batch by importing spreadsheets or replicating settings to new cameras.

Centralized management and monitoring

Stay on top of your deployment by previewing triggered events directly on multi-floor or multi-location maps, with online map integration for Google Maps and OpenStreetMap.

Video analytics

Take advantage of intelligent monitoring features such as motion detection, no idle zone, foreign object detection, and anomaly detection to cater the most common surveillance scenarios.

Works best with Synology drives

Enjoy high sustained performance and reliability with enterprise-grade drives designed for Synology systems and featuring built-in data protection.

HDD

Enterprise Series 3.5" SATA

Plus Series 3.5" SATA

SSD

Enterprise Series 2.5" SATA

Powered by Synology DSM

Take advantage of a whole host of native productivity, management, and security solutions available on the web-based DSM operating system.

File Management

Manage, sync, and share files from multiple devices through a centralized platform.

Learn more

Security

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

Learn more

System Administration

Manage the health of your deployments and centrally administer updates with ease.

Learn more

User Management

Manage user accounts and devices throughout your business with powerful directory services.

Learn more

Central Management System

Conveniently manage your fleet of Synology NAS from a centralized console.

Learn more

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Learn more

Protect better with Extended Warranty Plus

Extend the standard 3-year hardware warranty of your RS422+ with 2 extra years of Synology-certified support and premium services that help you recover faster in the event of disaster.

Learn more

Hardware Overview

1Power Indicator
2Power Button
3Alert Indicator
4Drive Status Indicators

5Mute Button
6Status Indicator
7Drive Tray Locks
8Drive Trays

9Fans
10Power Port
111GbE RJ-45 Ports
12Console Port

13USB 3.2 Gen 1 Port
14Reset Button
15Network Upgrade Slot

More ways to harness your NAS

Data intelligence at the edge

Rely on Synology's fast and secure edge storage solutions to ensure simple data accessibility where it is most needed.

Learn more

Complete endpoint protection

Follow the 3-2-1 backup strategy to keep your data safe with Synology’s backup packages.

Learn more

Ransomware prevention and protection

Minimize the threat posed by increasingly sophisticated ransomware and other malware with Synology solutions.

Learn more

Notes:Gartner® and Peer Insights™ are trademarks of Gartner, Inc. and/or its affiliates. All rights reserved. Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.C2 Storage for Hyper Backup and Hybrid Share requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered device.Surveillance Station includes 2 free licenses. Connecting more cameras and devices requires additional licenses.Learn moreCheck the compatibility list for supported drives.The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.Extended Warranty Plus must be purchased within 90 days of the device purchase date or, if none is available, 180 days of the device manufacturing date. A Synology Account is required for the purchase. The starting date of Extended Warranty Plus additional coverage is calculated based on the purchase date of your Synology NAS. If you cannot provide proof of purchase, the device manufacturing date applies. Learn moreExpress shipping is a paid add-on available in select countries only.

Hardware Specs

Software Specs

Hardware Specifications
CPU
CPU	CPU Model	AMD Ryzen R1600
	CPU Quantity	1
	CPU Cores	2
	CPU Threads	4
	CPU Architecture	64-bit
	CPU Frequency	2.6 (base) / 3.1 (turbo) GHz
	Hardware Encryption Engine
Memory
Memory	System Memory	2 GB DDR4 ECC
	Notes	Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance.
Storage
Storage	Drive Bays	4
	Drive Type (See all supported drives)	3.5" 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	1
	Notes	This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
PCIe
PCIe	PCIe Expansion	1 x Gen3 x2 network upgrade slot
Appearance
Appearance	Form Factor (RU)	1U
	Size (Height x Width x Depth)	44 mm x 478 mm x 327.5 mm
	Weight	4.38 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*	28.5 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	37.93 watts (Access) 13.43 watts (HDD Hibernation)
	British Thermal Unit	129.42 BTU/hr (Access) 45.83 BTU/hr (HDD Hibernation)
	Notes	For more information on how power consumption is measured, refer to this article. Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two G.R.A.S. Type 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature
Temperature	Operating Temperature	0°C to 35°C (32°F to 95°F)
	Storage Temperature	-20°C to 60°C (-5°F to 140°F)
	Operating Humidity	8% to 80% RH
	Storage Humidity	5% to 95% RH
Certification
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS
Warranty
Warranty	3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Extended Warranty Plus is only available in Europe and North America. EW201/EW202 is only available in Asia, Africa, and Oceania. For exact availability information please visit their respective websites.
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	Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series 10GbE Network Upgrade Module: E10G22-T1-Mini Rail Kit Sliding: RKS-02 Rail Kit Mounted: RKM114*
	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 Read/Write Cache (Determining cache size)
	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
	Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5
	Notes	Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration. 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.
File System
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT
File Services
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Number of SMB Connections (FSCT-Based)	40
	Windows Access Control List (ACL) Integration
	NFS Kerberos Authentication
	Notes	Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports SMB performance was evaluated using Microsoft File Server Capacity Tool (FSCT) version 1.3, with the following configuration: Test workload: HomeFolder scenario provided by the FSCT tool Test duration: 600 seconds Domain controller & FSCT controller: Windows Server 2022 FSCT clients: 8 × Windows 10 machines SMB feature: Directory leasing enabled
Account & Shared Folder
Account & Shared Folder	Maximum Local User Accounts	512
	Maximum Local Groups	128
	Maximum Shared Folder	128
	Maximum Shared Folder Sync Tasks	4
Hybrid Share
Hybrid Share	Maximum Hybrid Share Folders	10
Hyper Backup
Hyper Backup	Folder and Package Backup
	Entire System Backup
	Notes	Full-system backup requires DSM 7.2 or later.
High Availability
High Availability	Synology High Availability
Log Center
Log Center	Syslog Events per Second	800
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
Central Management System
Central Management System
Synology AI Console
Synology AI Console	Third-Party AI Model Integration
Synology Chat
Synology Chat	Maximum Number of Users	100
	Notes	Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds. Models with expandable memory are tested with the maximum supported quantity installed.
Download Station
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager
SAN Manager	Maximum iSCSI Target Number	2
	Maximum LUN	4
	LUN Clone/Snapshot, Windows ODX
Media Server
Media Server	DLNA Compliance
Synology Photos
Synology Photos	Facial Recognition
Snapshot Replication
Snapshot Replication	Maximum Snapshots per Shared Folder	128
	Maximum Snapshots per LUN	32
	Maximum Snapshots per System	1,024
	Maximum Replication Tasks for Shared Folders	16
	Maximum Replication Tasks for LUNs	8
	Maximum Replication Tasks per System	16
Surveillance Station
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Maximum IP Cameras and Total FPS (H.264)	1080p: 40 channels, 800 FPS 3M: 35 channels, 350 FPS 5M: 28 channels, 280 FPS 4K: 17 channels, 170 FPS
	Maximum IP Cameras and Total FPS (H.265)	1080p: 40 channels, 1200 FPS 3M: 40 channels, 600 FPS 5M: 40 channels, 480 FPS 4K: 20 channels, 200 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 video channels that can be viewed simultaneously is double the maximum number of cameras for the same codec and resolution.
Synology Drive
Synology Drive	Maximum Number of Users	70
	Maximum 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	The suggested maximum number of users is based on the following workload: 20% of users randomly perform file operations (upload, download, move, and delete), and 80% of users are logged in but idle. Learn more Models with SSD support are tested with a single SSD volume. 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	Maximum Number of Users	70
	Notes	The suggested maximum number of users is based on the following workload: 20% of users are executing random actions at an average of 30-second intervals, and 80% of users are logged in and viewing a file. Learn more Models with SSD support are tested with a single SSD volume. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
VPN Server
VPN Server	Maximum Connections	4

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.