Compact and versatile storage for home and office
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.
601/516 MB/s sequential read/write throughput1
Depth of just 327.5 mm with handles
Built-in dual 1GbE ports with easy 10GbE option
ECC memory prevents data corruption
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.
Leverage built-in connectivity to integrate the RS422+ into any IT environment, or expand its capabilities by adding plug-and-play modules.
Dual Gigabit ports with support for network failover and load balancing deliver fast and dependable performance out of the box.
Add an E10G22-T1-Mini Network Upgrade Module through the easily accessible slot to instantly enable faster networking.
The RS422+ is designed to support small deployments in tackling common applications such as file management, data backup, and surveillance.
Provide secure and convenient multi-platform file access, sharing, and synchronization across different locations.
Synology Drive provides remote data access, synchronization, on-demand file restoration, and backup via handy desktop and mobile applications. Learn more
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.
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
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.2 Learn more
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.
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.
Design an effective backup strategy to maximize system availability with a host of native and license-free solutions.
Securely back up Windows and Linux endpoints, Synology servers, and VMware® and Hyper-V® virtual machines with Active Backup for Business. Learn more
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
Back up files, LUNs, installed applications, and system configurations to destinations including Synology C2 Storage,2 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 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
Leverage flexible deployment options, intuitive management capabilities, and advanced video analytics to secure your premises.
Connect up to 40 IP cameras from a selection of over 8,300 validated models thanks to Synology Surveillance Station's wide camera compatibility.3
Monitor live streams or watch recordings from web browser, desktop client, or the DS cam mobile app.
Footage is stored locally for easier compliance with data protection regulations and further protected from unauthorized access with industry-standard AES-256 encryption.
Automatically locate new cameras within a set IP range, and configure units in batch by importing spreadsheets or replicating settings to new cameras.
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.
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.
Enjoy high sustained performance and reliability with enterprise-grade drives designed for Synology systems and featuring built-in data protection.4
Take advantage of a whole host of native productivity, management, and security solutions available on the web-based DSM operating system.
Manage, sync, and share files from multiple devices through a centralized platform.
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.
Manage the health of your deployments and centrally administer updates with ease.
Manage user accounts and devices throughout your business with powerful directory services.
Conveniently manage your fleet of Synology NAS from a centralized console.
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.
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 more
Check 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 more
Express shipping is a paid add-on available in select countries only.
Hardware Specifications |
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CPU |
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CPU
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CPU Model | AMD Ryzen R1600 |
| CPU Quantity | 1 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 2-core 2.6 (base) / 3.1 (turbo) GHz | |
| Hardware Encryption Engine (AES-NI) | ||
Memory |
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Memory
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System Memory | 2 GB DDR4 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 |
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Storage
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Drive Bays | 4 |
| Compatible Drive Type* (See all supported drives) |
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| Hot Swappable Drive* | ||
| Notes | "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. | |
External Ports |
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External Ports
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RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) |
| USB 3.2 Gen 1 Port* | 1 | |
| Notes |
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PCIe |
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PCIe
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PCIe Expansion | 1 x Gen3 x2 network upgrade slot |
File System |
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File System
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Internal Drives |
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| External Drives |
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Appearance |
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Appearance
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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* | ||
| Notes | The rail kit is sold separately | |
Others |
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Others
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System Fan | 40 mm x 40 mm x 3 pcs |
| Fan Speed Mode |
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| Power Recovery | ||
| Noise Level* | 28.5 dB(A) | |
| Scheduled Power On / Off | ||
| Wake on LAN / WAN | ||
| Power Supply Unit / Adapter | 100 W | |
| AC Input Power Voltage | 100V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption |
37.93 W (Access) 13.43 W (HDD Hibernation) |
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| British Thermal Unit |
129.42 BTU/hr (Access) 45.83 BTU/hr (HDD Hibernation) |
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| Notes |
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Temperature |
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Temperature
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Operating Temperature | 0°C to 35°C (32°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
Certification |
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Certification
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Warranty |
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Warranty
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3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus | |
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Environment |
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Environment
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RoHS Compliant | |
Packaging Content |
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Packaging Content
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Optional Accessories |
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Optional Accessories
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| Notes | Certain items may not be available in your location. Please contact your local distributors for more information. | |
DSM Specifications |
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| Maximum Single Volume Size* | 108 TB | |
| Maximum Internal Volume Number | 64 | |
| SSD Read / Write Cache (White Paper) | ||
| SSD TRIM | ||
| Supported RAID Type |
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| RAID Migration |
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| Volume Expansion with Larger HDDs |
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| Volume Expansion by Adding a HDD |
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| Global Hot Spare Supported RAID Type |
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| Notes |
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| File Protocol | SMB/AFP/NFS/FTP/WebDAV | |
| Maximum Concurrent SMB/AFP/FTP Connections | 500 | |
| 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. | |
| Maximum Local User Accounts | 2,048 | |
| Maximum Local Groups | 256 | |
| Maximum Shared Folder | 512 | |
| Maximum Shared Folder Sync Tasks | 8 | |
| Maximum Hybrid Share Folders | 10 | |
| Folder and Package Backup | ||
| Entire System Backup | ||
| Notes | Full-system backup requires DSM 7.2 or later. | |
| Synology High Availability | ||
| Syslog Events per Second | 800 | |
| Networking Protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV | |
| Supported Browsers |
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| 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 |
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Antivirus by McAfee (Trial) |
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Antivirus by McAfee (Trial)
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| Maximum Number of Concurrent Users | 100 | |
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Document Viewer |
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Document Viewer
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Download Station |
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Download Station
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| Maximum Concurrent Download Tasks | 80 | |
| Maximum iSCSI Target Number | 128 | |
| Maximum LUN | 256 | |
| LUN Clone/Snapshot, Windows ODX | ||
| DLNA Compliance | ||
| Facial Recognition | ||
| Maximum Snapshots per Shared Folder | 1,024 | |
| Maximum of System Snapshots | 65,536 | |
| Maximum IP cam (Licenses required) | 40 (including 2 Free License) (see all supported IP cameras) | |
| Total FPS (H.264) |
1200 FPS @ 720p (1280x720) 800 FPS @ 1080p (1920x1080) 350 FPS @ 3M (2048x1536) 280 FPS @ 5M (2591x1944) 170 FPS @ 4K (3840x2160) |
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| Total FPS (H.265) |
1200 FPS @ 720p (1280x720) 1200 FPS @ 1080p (1920x1080) 600 FPS @ 3M (2048x1536) 480 FPS @ 5M (2591x1944) 200 FPS @ 4K (3840x2160) |
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| Notes |
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| Recommended Number of Concurrent Sync Clients | 350 (the number of connections that can be maintained when the recommended number of hosted files was reached) | |
| Recommended Number of Hosted Files | 5,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above) | |
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| Maximum Users | 200 | |
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| Maximum Connections | 40 | |
