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RackStation RS422+

Compact and versatile storage for home and office
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.

Performance

601/516 MB/s sequential read/write throughput2

Form Factor

Depth of just 327.5 mm with handles

Connectivity

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

File Integrity

ECC memory prevents data corruption
Hardware Specifications
CPU
 CPU Model AMD Ryzen R1600
CPU Quantity 1
CPU Core 2
CPU Architecture 64-bit
CPU Frequency 2.6 (base) / 3.1 (turbo) GHz
Hardware Encryption Engine
Memory
 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
 Drive Bays 4
Drive Type (See all supported drives)
  • 3.5″ SATA HDD
  • 2.5″ SATA SSD
Hot Swappable Drive*
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 Expansion 1 x Gen3 x2 network upgrade slot
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
 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
 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
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • BIS
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
 RoHS Compliant
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Quick Installation Guide X 1
Optional Accessories
Notes Certain items may not be available in your location. Please contact your local distributors for more information.
DSM Specifications
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
 Internal Drives
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT32
  • NTFS
  • HFS+
  • exFAT
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
 Maximum Local User Accounts 512
Maximum Local Groups 128
Maximum Shared Folder 128
Maximum Shared Folder Sync Tasks 4
Hybrid Share
 Maximum Hybrid Share Folders 10
Hyper Backup
 Folder and Package Backup
Entire System Backup
Notes Full-system backup requires DSM 7.2 or later.
High Availability
 Synology High Availability
Log Center
 Syslog Events per Second 800
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
Synology AI Console
 Third-Party AI Model Integration
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
 Maximum Concurrent Download Tasks 80
SAN Manager
 Maximum iSCSI Target Number 2
Maximum LUN 4
LUN Clone/Snapshot, Windows ODX
Media Server
 DLNA Compliance
Synology Photos
 Facial Recognition
Snapshot Replication
 Maximum Snapshots per Shared Folder 128
Maximum of System Snapshots 1,024
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
 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
 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
 Maximum Connections 4
1
Power Indicator
2
Power Button
3
Alert Indicator
4
Drive Status Indicators
5
Mute Button
6
Status Indicator
7
Drive Tray Locks
8
Drive Trays
9
Fans
10
Power Port
11
1GbE RJ-45 Ports
12
Console Port
13
USB 3.2 Gen 1 Port
14
Reset Button
15
Network Upgrade Slot

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