1. products list

Comparison results

DS223 DS223j DS224+ DS723+
DS223 DS223j DS224+ DS723+
Hardware Specs
Hardware Specifications
CPU
CPU Model Realtek RTD1619B Realtek RTD1619B Intel Celeron J4125 AMD Ryzen R1600
CPU Quantity 1 1 1 1
CPU Core 4 4 4 2
CPU Architecture 64-bit 64-bit 64-bit 64-bit
CPU Frequency 1.7 GHz 1.7 GHz 2.0 (base) / 2.7 (turbo) GHz 2.6 (base) / 3.1 (turbo) GHz
Hardware Encryption Engine
Memory
System Memory 2 GB DDR4 non-ECC 1 GB DDR4 non-ECC 2 GB DDR4 non-ECC 2 GB DDR4 ECC SODIMM
Memory Module Pre-installed 2 GB (2 GB x 1)
Total Memory Slots 1 2
Maximum Memory Capacity 6 GB (2 GB + 4 GB) 32 GB (16 GB x 2)
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. 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.
  • 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.
  • 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.
  • For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage
Drive Bays 2 2 2 2
Maximum Drive Bays with Expansion Unit 7 (DX517 x 1)
M.2 Drive Slots 2 (NVMe)
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA SSD (with optional 2.5" Disk Holder)
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
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. "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. "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.
  • The hot swappable drive feature is not supported by M.2 SSD slots.
  • "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 1 1 2 2
USB 3.2 Gen 1 Port* 3 2 2 1
Expansion Port 1
Expansion Port Type eSATA
USB Copy
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.
  • 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.
  • 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.
  • 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.
PCIe
PCIe Expansion 1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth) 165 mm x 108 mm x 232.7 mm 165 mm x 100 mm x 225.5 mm 165 mm x 108 mm x 232.2 mm 166 mm x 106 mm x 223 mm
Weight 1.28 kg 0.88 kg 1.30 kg 1.51 kg
Others
System Fan 92 mm x 92 mm x 1 pcs 92 mm x 92 mm x 1 pcs 92 mm x 92 mm x 1 pcs 92 mm x 92 mm x 1 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 14.6 dB(A) 18.2 dB(A) 22 dB(A) 20.7 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60 watts 60 watts 60 watts 65 watts
AC Input Power Voltage 100V to 240V AC 100V to 240V AC 100V to 240V AC 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase 50/60 Hz, Single Phase 50/60 Hz, Single Phase 50/60 Hz, Single Phase
Power Consumption 17.343 watts (Access)
4.08 watts (HDD Hibernation)		 16.31 watts (Access)
4 watts (HDD Hibernation)		 14.69 watts (Access)
4.41 watts (HDD Hibernation)		 21.07 watts (Access)
8.62 watts (HDD Hibernation)
British Thermal Unit 59.19 BTU/hr (Access)
13.92 BTU/hr (HDD Hibernation)		 55.62 BTU/hr (Access)
13.64 BTU/hr (HDD Hibernation)		 50.09 BTU/hr (Access)
15.04 BTU/hr (HDD Hibernation)		 71.85 BTU/hr (Access)
29.39 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 SSDs and in an idle state. Two G.R.A.S. type 40AE microphones were 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%
  • 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 stae. 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%
  • 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 stae. 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 40°C (32°F to 104°F) 0°C to 40°C (32°F to 104°F) 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) -20°C to 60°C (-5°F to 140°F) -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH 5% to 95% RH 5% to 95% RH 5% to 95% RH
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • CCC
  • KC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
Warranty 2-year hardware warrant 2-year hardware warrant 2-year hardware warrant 3-year hardware warranty, extendable to 5 years with EW201
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty website for details on supported countries/regions. (Learn more)
Environment RoHS Compliant RoHS Compliant 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 1
  • 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 1
  • 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
  • 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
Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size 108 TB 108 TB 108 TB 108 TB
Maximum Internal Volume Number 64 64 64 64
M.2 SSD Storage Pool Support*
SSD Read/Write Cache (Determining cache size)
SSD TRIM
Supported RAID Type
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 1
  • Basic to RAID 1
  • Basic to RAID 1
  • Basic to RAID 5 (with Expansion Unit)
  • RAID 1 to RAID 5 (with Expansion Unit)
  • RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
  • Synology Hybrid RAID
  • RAID 1
  • Synology Hybrid RAID
  • RAID 1
  • Synology Hybrid RAID
  • RAID 1
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Volume Expansion by Adding a HDD
  • Synology Hybrid RAID
  • Synology Hybrid RAID
  • Synology Hybrid RAID
  • Synology Hybrid RAID
  • JBOD (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID (with Expansion Unit)
  • RAID 1 (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
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.
  • 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.
  • 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.
  • Creating M.2 storage pools requires the use of Synology-verified SSDs, which are rigorously tested under extreme temperature conditions. Thermal parameters for SSDs and NAS units are fine-tuned to ensure optimal management of thermal conditions under I/O-intensive environments. (Learn more)
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
File System
Internal Drives
  • Btrfs
  • ext4
  • Btrfs
  • ext4
  • Btrfs
  • ext4
  • Btrfs
  • ext4
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
Notes Btrfs file system is available from DSM 7.2-64570.
File Services
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections 200 100 500 500
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) 1,500 2,000
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. 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.
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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 1,024 2,048 2,048
Maximum Local Groups 256 256 256 256
Maximum Shared Folder 256 256 256 512
Maximum Shared Folder Sync Tasks 4 4 8 8
Hybrid Share
Hybrid Share Folder Number 5 10 10
Hyper Backup
Data & Folder Backup
Entire System Backup
Notes Full-system backup requires DSM 7.2 or later. Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
Log Center
Syslog Events per Second 400 200 800 800
Virtualization
VMware ESXi 6.5 and VAAI
Windows Server 2022
Citrix Ready
OpenStack
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 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
  • 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 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. 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 Chat
Suggested Users 100 100
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 their maximum supported memory.
  • 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 their maximum supported memory.
Download Station
Maximum Concurrent Download Tasks 80 80 80 80
SAN Manager
Maximum iSCSI Target Number 10 10 128 128
Maximum LUN 10 10 256 256
LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server
Free Email Accounts 5 (Additional accounts require purchase of licenses) 5 (Additional accounts require purchase of licenses)
Suggested Users 500 500
Maximum Server Performance 1,224,000 emails per day, approx. 37GB 1,224,000 emails per day, approx. 37GB
Notes
  • Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
  • Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more
  • Models with 2 bays and dual M.2 drive slots were installed with two SSDs for SSD cache.
  • Models with expandable memory are tested with their maximum supported memory.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
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. Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
Snapshot Replication
Maximum Snapshots per Shared Folder 256 256 1,024 1,024
Maximum of System Snapshots 4,096 4,096 65,536 65,536
Notes Snapshot Replication is available from DSM 7.2-64570.
Surveillance Station
Default Licenses 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses) 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
  • 720p: 20 channels, 600 FPS
  • 1080p: 20 channels, 460 FPS
  • 3M: 20 channels, 300 FPS
  • 5M: 15 channels, 150 FPS
  • 4K: 11 channels, 110 FPS
  • 720p: 12 channels, 360 FPS
  • 1080p: 12 channels, 360 FPS
  • 3M: 12 channels, 300 FPS
  • 5M: 12 channels, 150 FPS
  • 4K: 11 channels, 110 FPS
  • 720p: 25 channels, 750 FPS
  • 1080p: 25 channels, 750 FPS
  • 3M: 25 channels, 350 FPS
  • 5M: 25 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
  • 720p: 40 channels, 1200 FPS
  • 1080p: 40 channels, 800 FPS
  • 3M: 35 channels, 350 FPS
  • 5M: 28 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
  • 720p: 20 channels, 600 FPS
  • 1080p: 20 channels, 500 FPS
  • 3M: 20 channels, 400 FPS
  • 5M: 20 channels, 350 FPS
  • 4K: 20 channels, 200 FPS
  • 720p: 12 channels, 360 FPS
  • 1080p: 12 channels, 360 FPS
  • 3M: 12 channels, 360 FPS
  • 5M: 12 channels, 350 FPS
  • 4K: 12 channels, 200 FPS
  • 720p: 25 channels, 750 FPS
  • 1080p: 25 channels, 750 FPS
  • 3M: 25 channels, 600 FPS
  • 5M: 25 channels, 480 FPS
  • 4K: 20 channels, 200 FPS
  • 720p: 40 channels, 1200 FPS
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
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) 200 (the number of connections that can be maintained when the recommended number of hosted files was reached) 350 (the number of connections that can be maintained when the recommended number of hosted files was reached) 350 (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) 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) 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) 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)
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.
  • 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.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Models with expandable memory are tested with their maximum supported memory.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Utilizing SSD cache can significantly improve performance.
  • Models with expandable memory are tested with their maximum supported memory.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Suggested Users 500 500 1,500 3,000
Notes
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • 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) 4 (Learn more)
Recommended Virtual DSM Number (Licenses required) 2 (including 1 Free License) 4 (including 1 Free License)
Notes The specifications vary depending on system configuration and memory size. The specifications vary depending on system configuration and memory size.
VPN Server
Maximum Connections 20 10 40 40
Hardware Specs
Hardware Specifications
CPU
CPU Model
DS223 Realtek RTD1619B
DS223j Realtek RTD1619B
DS224+ Intel Celeron J4125
DS723+ AMD Ryzen R1600
CPU Quantity
DS223 1
DS223j 1
DS224+ 1
DS723+ 1
CPU Core
DS223 4
DS223j 4
DS224+ 4
DS723+ 2
CPU Architecture
DS223 64-bit
DS223j 64-bit
DS224+ 64-bit
DS723+ 64-bit
CPU Frequency
DS223 1.7 GHz
DS223j 1.7 GHz
DS224+ 2.0 (base) / 2.7 (turbo) GHz
DS723+ 2.6 (base) / 3.1 (turbo) GHz
Hardware Encryption Engine
DS223
DS223j
DS224+
DS723+
Memory
System Memory
DS223 2 GB DDR4 non-ECC
DS223j 1 GB DDR4 non-ECC
DS224+ 2 GB DDR4 non-ECC
DS723+ 2 GB DDR4 ECC SODIMM
Memory Module Pre-installed
DS223
DS223j
DS224+
DS723+ 2 GB (2 GB x 1)
Total Memory Slots
DS223
DS223j
DS224+ 1
DS723+ 2
Maximum Memory Capacity
DS223
DS223j
DS224+ 6 GB (2 GB + 4 GB)
DS723+ 32 GB (16 GB x 2)
Notes
DS223 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.
DS223j 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.
DS723+
  • 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.
  • For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage
Drive Bays
DS223 2
DS223j 2
DS224+ 2
DS723+ 2
Maximum Drive Bays with Expansion Unit
DS223
DS223j
DS224+
DS723+ 7 (DX517 x 1)
M.2 Drive Slots
DS223
DS223j
DS224+
DS723+ 2 (NVMe)
Compatible Drive Type* (See all supported drives)
DS223
  • 3.5" SATA HDD
  • 2.5" SATA SSD
DS223j
  • 3.5" SATA HDD
  • 2.5" SATA SSD (with optional 2.5" Disk Holder)
DS224+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
DS723+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
Hot Swappable Drive*
DS223
DS223j
DS224+
DS723+
Notes
DS223 "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.
DS223j "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.
DS224+ "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.
DS723+
  • The hot swappable drive feature is not supported by M.2 SSD slots.
  • "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
DS223 1
DS223j 1
DS224+ 2
DS723+ 2
USB 3.2 Gen 1 Port*
DS223 3
DS223j 2
DS224+ 2
DS723+ 1
Expansion Port
DS223
DS223j
DS224+
DS723+ 1
Expansion Port Type
DS223
DS223j
DS224+
DS723+ eSATA
USB Copy
DS223
DS223j
DS224+
DS723+
Notes
DS223
  • 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.
DS223j
  • 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.
DS224+
  • 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.
DS723+
  • 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.
PCIe
PCIe Expansion
DS223
DS223j
DS224+
DS723+ 1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth)
DS223 165 mm x 108 mm x 232.7 mm
DS223j 165 mm x 100 mm x 225.5 mm
DS224+ 165 mm x 108 mm x 232.2 mm
DS723+ 166 mm x 106 mm x 223 mm
Weight
DS223 1.28 kg
DS223j 0.88 kg
DS224+ 1.30 kg
DS723+ 1.51 kg
Others
System Fan
DS223 92 mm x 92 mm x 1 pcs
DS223j 92 mm x 92 mm x 1 pcs
DS224+ 92 mm x 92 mm x 1 pcs
DS723+ 92 mm x 92 mm x 1 pcs
Fan Speed Mode
DS223
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
DS223j
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
  • Low-power Mode
DS224+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
DS723+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
DS223
DS223j
DS224+
DS723+
Power Recovery
DS223
DS223j
DS224+
DS723+
Noise Level*
DS223 14.6 dB(A)
DS223j 18.2 dB(A)
DS224+ 22 dB(A)
DS723+ 20.7 dB(A)
Scheduled Power On / Off
DS223
DS223j
DS224+
DS723+
Wake on LAN / WAN
DS223
DS223j
DS224+
DS723+
Power Supply Unit / Adapter
DS223 60 watts
DS223j 60 watts
DS224+ 60 watts
DS723+ 65 watts
AC Input Power Voltage
DS223 100V to 240V AC
DS223j 100V to 240V AC
DS224+ 100V to 240V AC
DS723+ 100V to 240V AC
Power Frequency
DS223 50/60 Hz, Single Phase
DS223j 50/60 Hz, Single Phase
DS224+ 50/60 Hz, Single Phase
DS723+ 50/60 Hz, Single Phase
Power Consumption
DS223 17.343 watts (Access)
4.08 watts (HDD Hibernation)
DS223j 16.31 watts (Access)
4 watts (HDD Hibernation)
DS224+ 14.69 watts (Access)
4.41 watts (HDD Hibernation)
DS723+ 21.07 watts (Access)
8.62 watts (HDD Hibernation)
British Thermal Unit
DS223 59.19 BTU/hr (Access)
13.92 BTU/hr (HDD Hibernation)
DS223j 55.62 BTU/hr (Access)
13.64 BTU/hr (HDD Hibernation)
DS224+ 50.09 BTU/hr (Access)
15.04 BTU/hr (HDD Hibernation)
DS723+ 71.85 BTU/hr (Access)
29.39 BTU/hr (HDD Hibernation)
Notes
DS223
  • 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 SSDs and in an idle state. Two G.R.A.S. type 40AE microphones were 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%.
DS223j
  • 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%
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 stae. 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%
DS723+
  • 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 stae. 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
DS223 0°C to 40°C (32°F to 104°F)
DS223j 0°C to 40°C (32°F to 104°F)
DS224+ 0°C to 40°C (32°F to 104°F)
DS723+ 0°C to 40°C (32°F to 104°F)
Storage Temperature
DS223 -20°C to 60°C (-5°F to 140°F)
DS223j -20°C to 60°C (-5°F to 140°F)
DS224+ -20°C to 60°C (-5°F to 140°F)
DS723+ -20°C to 60°C (-5°F to 140°F)
Relative Humidity
DS223 5% to 95% RH
DS223j 5% to 95% RH
DS224+ 5% to 95% RH
DS723+ 5% to 95% RH
Certification
DS223
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
DS223j
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
DS224+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • CCC
  • KC
DS723+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
Warranty
DS223 2-year hardware warrant
DS223j 2-year hardware warrant
DS224+ 2-year hardware warrant
DS723+ 3-year hardware warranty, extendable to 5 years with EW201
Notes
DS223
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
DS223j
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
DS224+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • In the event that a valid receipt of purchase of Product or Product invoice is not presented, or is apparently erroneous or falsified, the Warranty Period for the presented Product shall commence from the manufacturing date in accordance with Synology's internal records.
DS723+
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty website for details on supported countries/regions. (Learn more)
Environment
DS223 RoHS Compliant
DS223j RoHS Compliant
DS224+ RoHS Compliant
DS723+ RoHS Compliant
Packaging Content
DS223
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
DS223j
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 1
  • Quick Installation Guide X 1
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
DS723+
  • 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
DS223
DS223j
DS224+
DS723+
Notes
DS223
DS223j
DS224+ All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
DS723+
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
DS223 108 TB
DS223j 108 TB
DS224+ 108 TB
DS723+ 108 TB
Maximum Internal Volume Number
DS223 64
DS223j 64
DS224+ 64
DS723+ 64
M.2 SSD Storage Pool Support*
DS223
DS223j
DS224+
DS723+
SSD Read/Write Cache (Determining cache size)
DS223
DS223j
DS224+
DS723+
SSD TRIM
DS223
DS223j
DS224+
DS723+
Supported RAID Type
DS223
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
DS223j
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
DS224+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
DS723+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
RAID Migration
DS223
  • Basic to RAID 1
DS223j
  • Basic to RAID 1
DS224+
  • Basic to RAID 1
DS723+
  • Basic to RAID 1
  • Basic to RAID 5 (with Expansion Unit)
  • RAID 1 to RAID 5 (with Expansion Unit)
  • RAID 5 to RAID 6 (with Expansion Unit)
Volume Expansion with Larger HDDs
DS223
  • Synology Hybrid RAID
  • RAID 1
DS223j
  • Synology Hybrid RAID
  • RAID 1
DS224+
  • Synology Hybrid RAID
  • RAID 1
DS723+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Volume Expansion by Adding a HDD
DS223
  • Synology Hybrid RAID
DS223j
  • Synology Hybrid RAID
DS224+
  • Synology Hybrid RAID
DS723+
  • Synology Hybrid RAID
  • JBOD (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
DS223
DS223j
DS224+
DS723+
  • Synology Hybrid RAID (with Expansion Unit)
  • RAID 1 (with Expansion Unit)
  • RAID 5 (with Expansion Unit)
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
DS223
  • 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.
DS223j
  • 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.
DS224+
  • 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.
DS723+
  • Creating M.2 storage pools requires the use of Synology-verified SSDs, which are rigorously tested under extreme temperature conditions. Thermal parameters for SSDs and NAS units are fine-tuned to ensure optimal management of thermal conditions under I/O-intensive environments. (Learn more)
  • 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.
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
File System
Internal Drives
DS223
  • Btrfs
  • ext4
DS223j
  • Btrfs
  • ext4
DS224+
  • Btrfs
  • ext4
DS723+
  • Btrfs
  • ext4
External Drives
DS223
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
DS223j
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
DS224+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
DS723+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
Notes
DS223
DS223j Btrfs file system is available from DSM 7.2-64570.
DS224+
DS723+
File Services
File Protocol
DS223
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
DS223j
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
DS224+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
DS723+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections
DS223 200
DS223j 100
DS224+ 500
DS723+ 500
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)
DS223
DS223j
DS224+ 1,500
DS723+ 2,000
Windows Access Control List (ACL) Integration
DS223
DS223j
DS224+
DS723+
NFS Kerberos Authentication
DS223
DS223j
DS224+
DS723+
Notes
DS223 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.
DS223j 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.
DS224+
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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.
DS723+
  • Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
  • 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
DS223 1,024
DS223j 1,024
DS224+ 2,048
DS723+ 2,048
Maximum Local Groups
DS223 256
DS223j 256
DS224+ 256
DS723+ 256
Maximum Shared Folder
DS223 256
DS223j 256
DS224+ 256
DS723+ 512
Maximum Shared Folder Sync Tasks
DS223 4
DS223j 4
DS224+ 8
DS723+ 8
Hybrid Share
Hybrid Share Folder Number
DS223 5
DS223j
DS224+ 10
DS723+ 10
Hyper Backup
Data & Folder Backup
DS223
DS223j
DS224+
DS723+
Entire System Backup
DS223
DS223j
DS224+
DS723+
Notes
DS223
DS223j
DS224+ Full-system backup requires DSM 7.2 or later.
DS723+ Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
DS223
DS223j
DS224+
DS723+
Log Center
DS223
DS223j
DS224+
DS723+
Syslog Events per Second
DS223 400
DS223j 200
DS224+ 800
DS723+ 800
Virtualization
VMware ESXi 6.5 and VAAI
DS223
DS223j
DS224+
DS723+
Windows Server 2022
DS223
DS223j
DS224+
DS723+
Citrix Ready
DS223
DS223j
DS224+
DS723+
OpenStack
DS223
DS223j
DS224+
DS723+
General Specifications
Supported Protocols
DS223 SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
DS223j SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
DS224+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
DS723+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
DS223
  • Chrome
  • Firefox
  • Edge
  • Safari
DS223j
  • Chrome
  • Firefox
  • Edge
  • Safari
DS224+
  • Chrome
  • Firefox
  • Edge
  • Safari
DS723+
  • Chrome
  • Firefox
  • Edge
  • Safari
Supported Language
DS223 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
DS223j 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
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
DS723+ 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
DS223 For an updated list of supported browser versions, check the DSM Technical Specifications.
DS223j For an updated list of supported browser versions, check the DSM Technical Specifications.
DS224+ For an updated list of supported browser versions, check the DSM Technical Specifications.
DS723+ For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
DS223
DS223j
DS224+
DS723+
Synology Chat
DS223
DS223j
DS224+
DS723+
Suggested Users
DS223
DS223j
DS224+ 100
DS723+ 100
Notes
DS223
DS223j
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 their maximum supported memory.
DS723+
  • 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 their maximum supported memory.
Download Station
DS223
DS223j
DS224+
DS723+
Maximum Concurrent Download Tasks
DS223 80
DS223j 80
DS224+ 80
DS723+ 80
SAN Manager
DS223
DS223j
DS224+
DS723+
Maximum iSCSI Target Number
DS223 10
DS223j 10
DS224+ 128
DS723+ 128
Maximum LUN
DS223 10
DS223j 10
DS224+ 256
DS723+ 256
LUN Clone/Snapshot, Windows ODX
DS223
DS223j
DS224+
DS723+
Synology MailPlus / MailPlus Server
DS223
DS223j
DS224+
DS723+
Free Email Accounts
DS223
DS223j
DS224+ 5 (Additional accounts require purchase of licenses)
DS723+ 5 (Additional accounts require purchase of licenses)
Suggested Users
DS223
DS223j
DS224+ 500
DS723+ 500
Maximum Server Performance
DS223
DS223j
DS224+ 1,224,000 emails per day, approx. 37GB
DS723+ 1,224,000 emails per day, approx. 37GB
Notes
DS223
DS223j
DS224+
  • Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
DS723+
  • Suggested users is derived from testing in an environment with 20% heavy users (each with 20,000 pre-populated emails and receiving 240 emails per day) and 80% light users (each receiving an average of 20 emails per day). Learn more
  • Models with 2 bays and dual M.2 drive slots were installed with two SSDs for SSD cache.
  • Models with expandable memory are tested with their maximum supported memory.
  • The performance of the mail system will slightly decrease in high-availability mode due to data synchronization between the two servers.
  • Functions that were enabled in all of the tests above: anti-spam, anti-virus, DNSBL, greylist, content scan, full-text search (English only).
Media Server
DS223
DS223j
DS224+
DS723+
DLNA Compliance
DS223
DS223j
DS224+
DS723+
Synology Photos
DS223
DS223j
DS224+
DS723+
Facial Recognition
DS223
DS223j
DS224+
DS723+
Object Recognition
DS223
DS223j
DS224+
DS723+
Notes
DS223
DS223j
DS224+ Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
DS723+ Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
Snapshot Replication
DS223
DS223j
DS224+
DS723+
Maximum Snapshots per Shared Folder
DS223 256
DS223j 256
DS224+ 1,024
DS723+ 1,024
Maximum of System Snapshots
DS223 4,096
DS223j 4,096
DS224+ 65,536
DS723+ 65,536
Notes
DS223
DS223j Snapshot Replication is available from DSM 7.2-64570.
DS224+
DS723+
Surveillance Station
DS223
DS223j
DS224+
DS723+
Default Licenses
DS223 2 (Additional cameras require purchase of licenses)
DS223j 2 (Additional cameras require purchase of licenses)
DS224+ 2 (Additional cameras require purchase of licenses)
DS723+ 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
DS223
  • 720p: 20 channels, 600 FPS
  • 1080p: 20 channels, 460 FPS
  • 3M: 20 channels, 300 FPS
  • 5M: 15 channels, 150 FPS
  • 4K: 11 channels, 110 FPS
DS223j
  • 720p: 12 channels, 360 FPS
  • 1080p: 12 channels, 360 FPS
  • 3M: 12 channels, 300 FPS
  • 5M: 12 channels, 150 FPS
  • 4K: 11 channels, 110 FPS
DS224+
  • 720p: 25 channels, 750 FPS
  • 1080p: 25 channels, 750 FPS
  • 3M: 25 channels, 350 FPS
  • 5M: 25 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
DS723+
  • 720p: 40 channels, 1200 FPS
  • 1080p: 40 channels, 800 FPS
  • 3M: 35 channels, 350 FPS
  • 5M: 28 channels, 280 FPS
  • 4K: 17 channels, 170 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
DS223
  • 720p: 20 channels, 600 FPS
  • 1080p: 20 channels, 500 FPS
  • 3M: 20 channels, 400 FPS
  • 5M: 20 channels, 350 FPS
  • 4K: 20 channels, 200 FPS
DS223j
  • 720p: 12 channels, 360 FPS
  • 1080p: 12 channels, 360 FPS
  • 3M: 12 channels, 360 FPS
  • 5M: 12 channels, 350 FPS
  • 4K: 12 channels, 200 FPS
DS224+
  • 720p: 25 channels, 750 FPS
  • 1080p: 25 channels, 750 FPS
  • 3M: 25 channels, 600 FPS
  • 5M: 25 channels, 480 FPS
  • 4K: 20 channels, 200 FPS
DS723+
  • 720p: 40 channels, 1200 FPS
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 40 channels, 480 FPS
  • 4K: 20 channels, 200 FPS
Notes
DS223
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
DS223j
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
DS723+
  • 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
Synology Drive
DS223
DS223j
DS224+
DS723+
Recommended Number of Concurrent Sync Clients
DS223 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS223j 200 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS224+ 350 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS723+ 350 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files
DS223 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)
DS223j 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)
DS224+ 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)
DS723+ 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)
Notes
DS223
  • 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.
DS223j
  • 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.
DS224+
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Models with expandable memory are tested with their maximum supported memory.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
DS723+
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Utilizing SSD cache can significantly improve performance.
  • Models with expandable memory are tested with their maximum supported memory.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
DS223
DS223j
DS224+
DS723+
Suggested Users
DS223 500
DS223j 500
DS224+ 1,500
DS723+ 3,000
Notes
DS223
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
DS223j
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
DS224+
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
DS723+
  • Suggested users is derived from testing in an environment with 60% idle users (each logging in and viewing documents) and 40% active users (each executing random actions at intervals of 20 to 40 seconds) operating within documents, each document having 30 users. Learn more
  • Models with expandable memory are tested with their maximum supported memory.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Virtual Machine Manager
DS223
DS223j
DS224+
DS723+
Recommended Virtual Machine Instances
DS223
DS223j
DS224+ 2 (Learn more)
DS723+ 4 (Learn more)
Recommended Virtual DSM Number (Licenses required)
DS223
DS223j
DS224+ 2 (including 1 Free License)
DS723+ 4 (including 1 Free License)
Notes
DS223
DS223j
DS224+ The specifications vary depending on system configuration and memory size.
DS723+ The specifications vary depending on system configuration and memory size.
VPN Server
DS223
DS223j
DS224+
DS723+
Maximum Connections
DS223 20
DS223j 10
DS224+ 40
DS723+ 40