Comparison results

Highlight Differences

DS224+

DS423

Hardware Specifications
CPU
CPU Model	Intel Celeron J4125	Realtek RTD1619B
CPU Quantity	1	1
CPU Core	4	4
CPU Architecture	64-bit	64-bit
CPU Frequency	2.0 (base) / 2.7 (turbo) GHz	1.7 GHz
Hardware Encryption Engine
Memory
System Memory	2 GB DDR4 non-ECC	2 GB DDR4 non-ECC
Total Memory Slots	1
Maximum Memory Capacity	6 GB (2 GB + 4 GB)
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. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.	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	2	4
Drive Type (See all supported drives)	3.5" SATA HDD 2.5" SATA SSD	3.5" SATA HDD 2.5" SATA SSD
Hot Swappable Drive*
External Ports
RJ-45 1GbE LAN Port	2	2
USB 3.2 Gen 1 Port	2	2
USB Copy
Notes	MTU value of 1GbE LAN port has a limit of 1500.	MTU value of 1GbE LAN port has a limit of 1500.
Appearance
Size (Height x Width x Depth)	165 mm x 108 mm x 232.2 mm	184 mm x 168 mm x 230 mm
Weight	1.30 kg	2.21 kg
Others
System Fan	92 mm x 92 mm x 1 pcs	80 mm x 80 mm x 2 pcs
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode	Full-Speed Mode Cool Mode Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level*	22 dB(A)	20.6 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter	60 watts	90 watts
AC Input Power Voltage	100V to 240V AC	100V to 240V AC
Power Frequency	50/60 Hz, Single Phase	50/60 Hz, Single Phase
Power Consumption*	14.69 watts (Access) 4.41 watts (HDD Hibernation)	32.41 watts (Access) 4.97 watts (HDD Hibernation)
British Thermal Unit	50.09 BTU/hr (Access) 15.04 BTU/hr (HDD Hibernation)	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 testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 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%	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)	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20°C to 60°C (-5°F to 140°F)	-20°C to 60°C (-5°F to 140°F)
Operating Humidity	8% to 80% RH	8% to 80% RH
Storage Humidity	5% to 95% RH	5% to 95% RH
Certification	FCC CE BSMI VCCI RCM UKCA CCC KC BIS	FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS
Warranty	2-year hardware warranty, extendable to 4 years with Extended Warranty Plus	2-year hardware warranty, extendable to 4 years with 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. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)	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. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment	RoHS Compliant	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	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	DDR4 non-ECC SODIMM: D4NESO-2666-4G Plus Series 3.5" SATA HDD: HAT3300 Series	Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series
Notes	All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

DSM Specifications
Storage Management
Maximum Single Volume Size	108 TB	108 TB
Maximum Internal Volume Number	64	64
SSD TRIM
Supported RAID Type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
RAID Migration	Basic to RAID 1	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	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	Each internal volume (may consist of multiple drives) is expandable up to 108TB. Actual maximum storage pool and volume sizes vary depending on drives 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.	Actual maximum storage pool and volume sizes vary depending on drives 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	Btrfs ext4
External Drives	Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT	Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT
File Services
File Protocol	SMB AFP NFS FTP WebDAV Rsync	SMB AFP NFS FTP WebDAV Rsync
Maximum Number of SMB Connections (FSCT-Based)	5	5
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 Models with expandable memory are tested with the maximum supported quantity installed. 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	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	256
Maximum Local Groups	128	64
Maximum Shared Folder	128	64
Maximum Shared Folder Sync Tasks	4	2
Hybrid Share
Hybrid Share Folder Number	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	400
General Specifications
Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers	Chrome Firefox Edge Safari	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	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.	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
Suggested 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	80
SAN Manager
Maximum iSCSI Target Number	2	2
Maximum LUN	4	4
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Free Email Accounts	5 (Additional accounts require purchase of licenses)
Suggested Users	20
Notes	The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more Models with SSD support are tested with a single SSD volume. Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements. Operating in high-availability mode will incur additional overhead. Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).
Media Server
DLNA Compliance
Synology Photos
Facial Recognition
Object Recognition
Notes	Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
Snapshot Replication
Maximum Snapshots per Shared Folder	128	128
Maximum of System Snapshots	1,024	1,024
Surveillance Station
Default Licenses	2 (Additional cameras require purchase of licenses)	2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)	1080p: 25 channels, 750 FPS 3M: 25 channels, 350 FPS 5M: 25 channels, 280 FPS 4K: 17 channels, 170 FPS	1080p: 30 channels, 600 FPS 3M: 30 channels, 300 FPS 5M: 20 channels, 200 FPS 4K: 15 channels, 150 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)	1080p: 25 channels, 750 FPS 3M: 25 channels, 600 FPS 5M: 25 channels, 480 FPS 4K: 20 channels, 200 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, 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 streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.	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 streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.
Synology Drive
Suggested Users	10	5
Maximum Number of Hosted Files	100,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)	100,000 (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. Models with expandable memory are tested with the maximum supported quantity installed. 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.	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
Suggested Users	10	5
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. Models with expandable memory are tested with the maximum supported quantity installed. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM	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
Virtual Machine Manager
Recommended Virtual Machine Instances	2 (Learn more)
Recommended Virtual DSM Number (Licenses required)	2 (including 1 Free License)
Notes	The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections	4	2

Hardware Specs

Hardware Specifications

CPU

CPU Model

DS224+	Intel Celeron J4125
DS423	Realtek RTD1619B

CPU Quantity

DS224+	1
DS423	1

CPU Core

DS224+	4
DS423	4

CPU Architecture

DS224+	64-bit
DS423	64-bit

CPU Frequency

DS224+	2.0 (base) / 2.7 (turbo) GHz
DS423	1.7 GHz

Hardware Encryption Engine

Memory

System Memory

DS224+	2 GB DDR4 non-ECC
DS423	2 GB DDR4 non-ECC

Total Memory Slots

DS224+	1
DS423

Maximum Memory Capacity

DS224+	6 GB (2 GB + 4 GB)
DS423

Notes

DS224+	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. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
DS423	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.

DS224+

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.
Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.

DS423

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

DS224+	2
DS423	4

Drive Type (See all supported drives)

DS224+	3.5" SATA HDD 2.5" SATA SSD
DS423	3.5" SATA HDD 2.5" SATA SSD

Hot Swappable Drive*

External Ports

RJ-45 1GbE LAN Port

DS224+	2
DS423	2

USB 3.2 Gen 1 Port

DS224+	2
DS423	2

USB Copy

Notes

DS224+	MTU value of 1GbE LAN port has a limit of 1500.
DS423	MTU value of 1GbE LAN port has a limit of 1500.

Appearance

Size (Height x Width x Depth)

DS224+	165 mm x 108 mm x 232.2 mm
DS423	184 mm x 168 mm x 230 mm

Weight

DS224+	1.30 kg
DS423	2.21 kg

Others

System Fan

DS224+	92 mm x 92 mm x 1 pcs
DS423	80 mm x 80 mm x 2 pcs

Fan Speed Mode

DS224+	Full-Speed Mode Cool Mode Quiet Mode
DS423	Full-Speed Mode Cool Mode Quiet Mode

Brightness Adjustable Front LED Indicators

Power Recovery

Noise Level*

DS224+	22 dB(A)
DS423	20.6 dB(A)

Scheduled Power On / Off

Wake on LAN / WAN

Power Supply Unit / Adapter

DS224+	60 watts
DS423	90 watts

AC Input Power Voltage

DS224+	100V to 240V AC
DS423	100V to 240V AC

Power Frequency

DS224+	50/60 Hz, Single Phase
DS423	50/60 Hz, Single Phase

Power Consumption*

DS224+	14.69 watts (Access) 4.41 watts (HDD Hibernation)
DS423	32.41 watts (Access) 4.97 watts (HDD Hibernation)

British Thermal Unit

DS224+	50.09 BTU/hr (Access) 15.04 BTU/hr (HDD Hibernation)
DS423	110.52 BTU/hr (Access) 16.95 BTU/hr (HDD Hibernation)

Notes

DS224+	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 GRAS 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%
DS423	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

DS224+	0°C to 40°C (32°F to 104°F)
DS423	0°C to 40°C (32°F to 104°F)

Storage Temperature

DS224+	-20°C to 60°C (-5°F to 140°F)
DS423	-20°C to 60°C (-5°F to 140°F)

Operating Humidity

DS224+	8% to 80% RH
DS423	8% to 80% RH

Storage Humidity

DS224+	5% to 95% RH
DS423	5% to 95% RH

Certification

DS224+	FCC CE BSMI VCCI RCM UKCA CCC KC BIS
DS423	FCC CE BSMI VCCI RCM UKCA EAC CCC KC BIS

Warranty

DS224+	2-year hardware warranty, extendable to 4 years with Extended Warranty Plus
DS423	2-year hardware warranty, extendable to 4 years with Extended Warranty Plus

Notes

DS224+	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. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
DS423	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. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)

Environment

DS224+	RoHS Compliant
DS423	RoHS Compliant

Packaging Content

DS224+	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
DS423	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

DS224+	DDR4 non-ECC SODIMM: D4NESO-2666-4G Plus Series 3.5" SATA HDD: HAT3300 Series
DS423	Enterprise Series 3.5" SATA HDD: HAT5300 Series Plus Series 3.5" SATA HDD: HAT3300 Series Enterprise Series 2.5" SATA SSD: SAT5200 Series

Notes

DS224+	All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
DS423

Software Specs

DSM Specifications

Storage Management

Maximum Single Volume Size

Maximum Internal Volume Number

SSD TRIM

Supported RAID Type

DS224+	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1
DS423	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10

RAID Migration

DS224+	Basic to RAID 1
DS423	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6

Volume Expansion with Larger HDDs

Volume Expansion by Adding a HDD

Global Hot Spare Supported RAID Type

Notes

DS224+	Each internal volume (may consist of multiple drives) is expandable up to 108TB. Actual maximum storage pool and volume sizes vary depending on drives 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.
DS423	Actual maximum storage pool and volume sizes vary depending on drives 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

External Drives

File Services

File Protocol

Maximum Number of SMB Connections (FSCT-Based)

Windows Access Control List (ACL) Integration

NFS Kerberos Authentication

Notes

DS224+

Connection value of this model is tested with Synology SATA HDD fully populated and all onboard network ports
Models with expandable memory are tested with the maximum supported quantity installed.
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

DS423

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

Maximum Local Groups

Maximum Shared Folder

Maximum Shared Folder Sync Tasks

Hybrid Share

Hyper Backup

Folder and Package Backup

Entire System Backup

Notes

High Availability

Synology High Availability

Log Center

DS224+
DS423

Syslog Events per Second

General Specifications

Supported Protocols

DS224+	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
DS423	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV

Supported Browsers

Supported Language

DS224+	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
DS423	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

DS224+	For an updated list of supported browser versions, check the DSM Technical Specifications.
DS423	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

DS224+
DS423

Third-Party AI Model Integration

Synology Chat

DS224+
DS423

Suggested Users

Notes

DS224+	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.
DS423

Download Station

DS224+
DS423

Maximum Concurrent Download Tasks

SAN Manager

DS224+
DS423

Maximum iSCSI Target Number

Maximum LUN

LUN Clone/Snapshot, Windows ODX

Synology MailPlus / MailPlus Server

DS224+
DS423

Free Email Accounts

Suggested Users

Notes

DS224+

The suggested maximum number of users is based on the following workload: 20% of users with a 20,000 item mailbox randomly performing actions and receiving 240 emails per day, and 80% of users receiving 20 emails per day. Learn more
Models with SSD support are tested with a single SSD volume.
Models with expandable memory are tested with the maximum supported quantity installed. Learn more about memory requirements.
Operating in high-availability mode will incur additional overhead.
Features enabled during evaluation: anti-spam, anti-virus, DNSBL, greylist, content scanning, and full-text search (English).

DS423

Media Server

DS224+
DS423

DLNA Compliance

Synology Photos

DS224+
DS423

Facial Recognition

Object Recognition

Notes

DS224+	Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
DS423

Snapshot Replication

DS224+
DS423

Maximum Snapshots per Shared Folder

Maximum of System Snapshots

Surveillance Station

DS224+
DS423

Default Licenses

DS224+	2 (Additional cameras require purchase of licenses)
DS423	2 (Additional cameras require purchase of licenses)

Suggested Maximum IP Cameras and Total FPS (H.264)

DS224+	1080p: 25 channels, 750 FPS 3M: 25 channels, 350 FPS 5M: 25 channels, 280 FPS 4K: 17 channels, 170 FPS
DS423	1080p: 30 channels, 600 FPS 3M: 30 channels, 300 FPS 5M: 20 channels, 200 FPS 4K: 15 channels, 150 FPS

Suggested Maximum IP Cameras and Total FPS (H.265)

DS224+	1080p: 25 channels, 750 FPS 3M: 25 channels, 600 FPS 5M: 25 channels, 480 FPS 4K: 20 channels, 200 FPS
DS423	1080p: 30 channels, 800 FPS 3M: 30 channels, 500 FPS 5M: 30 channels, 450 FPS 4K: 20 channels, 200 FPS

Notes

DS224+

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 streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.

DS423

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 streams that can be viewed simultaneously is twice the suggested maximum number of cameras. For example, if the suggested maximum number of cameras for a model is 10 under H.264, 1080p, the model can support up to 20 streams of the same specification at the same time.

Synology Drive

DS224+
DS423

Suggested Users

Maximum Number of Hosted Files

DS224+	100,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
DS423	100,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)

Notes

DS224+

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.
Models with expandable memory are tested with the maximum supported quantity installed.
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.

DS423

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

DS224+
DS423

Suggested Users

Notes

DS224+

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.
Models with expandable memory are tested with the maximum supported quantity installed.
Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM

DS423

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

Virtual Machine Manager

DS224+
DS423

Recommended Virtual Machine Instances

Recommended Virtual DSM Number (Licenses required)

Notes

DS224+	The specifications vary depending on system configuration and memory size.
DS423

VPN Server

DS224+
DS423

Maximum Connections