Description
Synology Quad Bay NAS DiskStation | DS423
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CPU |
CPU Model |
Realtek RTD1619B |
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CPU Quantity |
1 |
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CPU Architecture |
64-bit |
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CPU Frequency |
4-core 1.7 GHz |
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Hardware Encryption Engine |
Yes | |
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Memory |
System Memory |
2 GB DDR4 non-ECC |
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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. |
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Storage |
Drive Bays |
4 |
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Compatible Drive Type* (See all supported drives) |
· 3.5" SATA HDD · 2.5" SATA SSD |
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Hot Swappable Drive* |
Yes | |
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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. |
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External Ports |
RJ-45 1GbE LAN Port |
2 (with Link Aggregation / Failover support) |
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USB 3.2 Gen 1 Port* |
2 |
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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. |
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Appearance |
Size (Height x Width x Depth) |
184 mm x 168 mm x 230 mm |
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Weight |
2.21 kg |
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Others |
System Fan |
80 mm x 80 mm x 2 pcs |
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Fan Speed Mode |
· Full-Speed Mode · Cool Mode · Quiet Mode |
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Brightness Adjustable Front LED Indicators |
Yes | |
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Power Recovery |
Yes | |
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Noise Level* |
20.6 dB(A) |
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Scheduled Power On / Off |
Yes | |
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Wake on LAN / WAN |
Yes | |
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Power Supply Unit / Adapter |
90 W |
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AC Input Power Voltage |
100V to 240V AC |
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Power Frequency |
50/60 Hz, Single Phase |
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Power Consumption |
32.41 W (Access) |
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British Thermal Unit |
110.52 BTU/hr (Access) |
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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% |
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Temperature |
Operating Temperature |
0°C to 40°C (32°F to 104°F) |
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Storage Temperature |
-20°C to 60°C (-5°F to 140°F) |
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Relative Humidity |
5% to 95% RH |
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Certification |
· FCC · CE · BSMI · VCCI · RCM · UKCA · EAC · CCC · KC |
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Environment |
RoHS Compliant |
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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 |
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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 |
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DSM Specifications |
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Storage Management |
Maximum Single Volume Size |
108 TB |
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Maximum Internal Volume Number |
64 |
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SSD TRIM |
Yes | |
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Supported RAID Type |
· Synology Hybrid RAID · Basic · JBOD · RAID 0 · RAID 1 · RAID 5 · RAID 6 · RAID 10 |
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RAID Migration |
· Basic to RAID 1 · Basic to RAID 5 · RAID 1 to RAID 5 · RAID 5 to RAID 6 |
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Volume Expansion with Larger HDDs |
· Synology Hybrid RAID · RAID 1 · RAID 5 · RAID 6 · RAID 10 |
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Volume Expansion by Adding a HDD |
· Synology Hybrid RAID · JBOD · RAID 5 |
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Global Hot Spare Supported RAID Type |
· Synology Hybrid RAID · RAID 1 · RAID 5 |
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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. |
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File System |
Internal Drives |
· Btrfs · ext4 |
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External Drives |
· Btrfs · ext4 · ext3 · FAT · NTFS · HFS+ · exFAT |
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File Services |
File Protocol |
· SMB · AFP · NFS · FTP · WebDAV · Rsync |
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Maximum Concurrent SMB/AFP/FTP Connections |
200 |
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Windows Access Control List (ACL) Integration |
Yes | |
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NFS Kerberos Authentication |
Yes | |
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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. |
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Account & Shared Folder |
Maximum Local User Accounts |
1,024 |
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Maximum Local Groups |
256 |
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Maximum Shared Folder |
256 |
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Maximum Shared Folder Sync Tasks |
4 |
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Hybrid Share |
Maximum Hybrid Share Folders |
5 |
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Hyper Backup |
Folder and Package Backup |
Yes |
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Log Center |
Syslog Events per Second |
400 |
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General Specifications |
Supported Protocols |
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
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Supported Browsers |
· Chrome · Firefox · Edge · Safari |
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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 |
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Notes |
For an updated list of supported browser versions, check the DSM Technical Specifications. |
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Add-on Packages view the complete package list |
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Synology Chat |
Yes | |
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Download Station |
Maximum Concurrent Download Tasks |
80 |
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SAN Manager |
Maximum iSCSI Target Number |
128 |
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Maximum LUN |
256 |
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LUN Clone/Snapshot, Windows ODX |
Yes | |
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Media Server |
DLNA Compliance |
Yes |
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Synology Photos |
Facial Recognition |
Yes |
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Snapshot Replication |
Maximum Snapshots per Shared Folder |
256 |
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Maximum of System Snapshots |
4,096 |
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Surveillance Station |
Default Licenses |
2 (Additional cameras require purchase of licenses) |
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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 |
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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 |
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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. |
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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) |
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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) |
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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. |
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Synology Office |
Suggested Maximum Users |
500 |
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Suggested Concurrent Users |
200 |
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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 |
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Video Station |
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VPN Server |
Maximum Connections |
20 |
