Single Product

Synology Quad Bay NAS DiskStation | DS423
Hardware Specs
CPU
CPU Model
Realtek RTD1619B
CPU Quantity
1
CPU Architecture
64-bit
CPU Frequency
4-core 1.7 GHz
Hardware Encryption Engine
Yes
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
Drive Bays
4
Compatible Drive Type* (See all supported drives)
·       3.5" SATA HDD
·       2.5" SATA SSD
Hot Swappable Drive*
Yes
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
RJ-45 1GbE LAN Port
2 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port*
2
Notes
·       This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
·       The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
Appearance
Size (Height x Width x Depth)
184 mm x 168 mm x 230 mm
Weight
2.21 kg
Others
System Fan
80 mm x 80 mm x 2 pcs
Fan Speed Mode
·       Full-Speed Mode
·       Cool Mode
·       Quiet Mode
Brightness Adjustable Front LED Indicators
Yes
Power Recovery
Yes
Noise Level*
20.6 dB(A)
Scheduled Power On / Off
Yes
Wake on LAN / WAN
Yes
Power Supply Unit / Adapter
90 W
AC Input Power Voltage
100V to 240V AC
Power Frequency
50/60 Hz, Single Phase
Power Consumption
32.41 W (Access)
4.97 W (HDD Hibernation)
British Thermal Unit
110.52 BTU/hr (Access)
16.95 BTU/hr (HDD Hibernation)
Notes
·       For more information on how power consumption is measured, refer to this article.
·       Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. 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 40°C (32°F to 104°F)
Storage Temperature
-20°C to 60°C (-5°F to 140°F)
Relative Humidity
5% to 95% RH
Certification
·       FCC
·       CE
·       BSMI
·       VCCI
·       RCM
·       UKCA
·       EAC
·       CCC
·       KC
Environment
RoHS Compliant
Packaging Content
·       Main Unit X 1
·       Accessory Pack X 1
·       AC Power Adapter X 1
·       AC Power Cord X 1
·       RJ-45 LAN Cable X 2
·       Quick Installation Guide X 1
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
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
108 TB
Maximum Internal Volume Number
64
SSD TRIM
Yes
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
·       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.
·       Actual maximum storage pool and volume sizes depend on drive sizes used, the number of drive bays available, and the RAID configuration.
File System
Internal Drives
·       Btrfs
·       ext4
External Drives
·       Btrfs
·       ext4
·       ext3
·       FAT
·       NTFS
·       HFS+
·       exFAT
File Services
File Protocol
·       SMB
·       AFP
·       NFS
·       FTP
·       WebDAV
·       Rsync
Maximum Concurrent SMB/AFP/FTP Connections
200
Windows Access Control List (ACL) Integration
Yes
NFS Kerberos Authentication
Yes
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
Maximum Local User Accounts
1,024
Maximum Local Groups
256
Maximum Shared Folder
256
Maximum Shared Folder Sync Tasks
4
Hybrid Share
Maximum Hybrid Share Folders
5
Hyper Backup
Folder and Package Backup
Yes
Log Center
Syslog Events per Second
400
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
Yes
Download Station
Maximum Concurrent Download Tasks
80
SAN Manager
Maximum iSCSI Target Number
128
Maximum LUN
256
LUN Clone/Snapshot, Windows ODX
Yes
Media Server
DLNA Compliance
Yes
Synology Photos
Facial Recognition
Yes
Snapshot Replication
Maximum Snapshots per Shared Folder
256
Maximum of System Snapshots
4,096
Surveillance Station
Default Licenses
2 (Additional cameras require purchase of licenses)
Maximum IP Cameras and Total FPS (H.264)
·       720p: 30 channels, 900 FPS
·       1080p: 30 channels, 600 FPS
·       3M: 30 channels, 300 FPS
·       5M: 20 channels, 200 FPS
·       4K: 15 channels, 150 FPS
Maximum IP Cameras and Total FPS (H.265)
·       720p: 30 channels, 900 FPS
·       1080p: 30 channels, 800 FPS
·       3M: 30 channels, 500 FPS
·       5M: 30 channels, 450 FPS
·       4K: 20 channels, 200 FPS
Notes
·       Performance figures are obtained from testing conducted with the device fully populated with drives 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.
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
Suggested Maximum Users
500
Suggested Concurrent Users
200
Notes
·       Multiple files were opened for testing and each file was edited by 30 users simultaneously.
·       Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Video Station
VPN Server
Maximum Connections
20