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Comparison results

DS224+ DS923+
DS224+ DS923+
Hardware Specs
Hardware Specifications
CPU
CPU Model Intel Celeron J4125 AMD Ryzen R1600
CPU Quantity 1 1
CPU Core 4 2
CPU Architecture 64-bit 64-bit
CPU Frequency 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 4 GB DDR4 ECC SODIMM
Memory Module Pre-installed 4 GB (4 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.
  • 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 4
Maximum Drive Bays with Expansion Unit 9 (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
  • 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.
  • 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 2 2
USB 3.2 Gen 1 Port* 2 2
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.
PCIe
PCIe Expansion 1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth) 165 mm x 108 mm x 232.2 mm 166 mm x 199 mm x 223 mm
Weight 1.30 kg 2.24 kg
Others
System Fan 92 mm x 92 mm x 1 pcs 92 mm x 92 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) 22.9 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 60 watts 100 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)		 35.51 watts (Access)
11.52 watts (HDD Hibernation)
British Thermal Unit 50.09 BTU/hr (Access)
15.04 BTU/hr (HDD Hibernation)		 121.09 BTU/hr (Access)
39.28 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 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)
Storage Temperature -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
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • CCC
  • KC
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
Warranty 2-year hardware warranty 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)
  • 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
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
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
Maximum Internal Volume Number 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
  • 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
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • 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.
  • 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
External Drives
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections 500 1,000
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion) 1,500 2,000
Windows Access Control List (ACL) Integration
NFS Kerberos Authentication
Notes
  • 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 2,048 2,048
Maximum Local Groups 256 256
Maximum Shared Folder 256 512
Maximum Shared Folder Sync Tasks 8 16
Hybrid Share
Hybrid Share Folder Number 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 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
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 Chat
Suggested Concurrent 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
Download Station
Maximum Concurrent Download Tasks 80 80
SAN Manager
Maximum iSCSI Target Number 128 128
Maximum LUN 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 Maximum Users 500 500
Suggested Concurrent Users 100 100
Maximum Server Performance 1,224,000 emails per day, approx. 37GB 1,224,000 emails per day, approx. 37GB
Notes
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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).
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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.
Snapshot Replication
Maximum Snapshots per Shared Folder 1,024 1,024
Maximum of System Snapshots 65,536 65,536
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)
  • 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, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 30 channels, 360 FPS
  • 4K: 20 channels, 200 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
  • 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, 1000 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 30 channels, 300 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.
Synology Drive
Recommended Number of Concurrent Sync Clients 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 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
Suggested Maximum Users 1,500 3,000
Suggested Concurrent Users 600 1,200
Notes
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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 40 40
Hardware Specs
Hardware Specifications
CPU
CPU Model
DS224+ Intel Celeron J4125
DS923+ AMD Ryzen R1600
CPU Quantity
DS224+ 1
DS923+ 1
CPU Core
DS224+ 4
DS923+ 2
CPU Architecture
DS224+ 64-bit
DS923+ 64-bit
CPU Frequency
DS224+ 2.0 (base) / 2.7 (turbo) GHz
DS923+ 2.6 (base) / 3.1 (turbo) GHz
Hardware Encryption Engine
DS224+
DS923+
Memory
System Memory
DS224+ 2 GB DDR4 non-ECC
DS923+ 4 GB DDR4 ECC SODIMM
Memory Module Pre-installed
DS224+
DS923+ 4 GB (4 GB x 1)
Total Memory Slots
DS224+ 1
DS923+ 2
Maximum Memory Capacity
DS224+ 6 GB (2 GB + 4 GB)
DS923+ 32 GB (16 GB x 2)
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.
DS923+
  • 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
DS224+ 2
DS923+ 4
Maximum Drive Bays with Expansion Unit
DS224+
DS923+ 9 (DX517 x 1)
M.2 Drive Slots
DS224+
DS923+ 2 (NVMe)
Compatible Drive Type* (See all supported drives)
DS224+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
DS923+
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
Hot Swappable Drive*
DS224+
DS923+
Notes
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.
DS923+
  • 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
DS224+ 2
DS923+ 2
USB 3.2 Gen 1 Port*
DS224+ 2
DS923+ 2
Expansion Port
DS224+
DS923+ 1
Expansion Port Type
DS224+
DS923+ eSATA
USB Copy
DS224+
DS923+
Notes
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.
DS923+
  • 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
DS224+
DS923+ 1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth)
DS224+ 165 mm x 108 mm x 232.2 mm
DS923+ 166 mm x 199 mm x 223 mm
Weight
DS224+ 1.30 kg
DS923+ 2.24 kg
Others
System Fan
DS224+ 92 mm x 92 mm x 1 pcs
DS923+ 92 mm x 92 mm x 2 pcs
Fan Speed Mode
DS224+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
DS923+
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
DS224+
DS923+
Power Recovery
DS224+
DS923+
Noise Level*
DS224+ 22 dB(A)
DS923+ 22.9 dB(A)
Scheduled Power On / Off
DS224+
DS923+
Wake on LAN / WAN
DS224+
DS923+
Power Supply Unit / Adapter
DS224+ 60 watts
DS923+ 100 watts
AC Input Power Voltage
DS224+ 100V to 240V AC
DS923+ 100V to 240V AC
Power Frequency
DS224+ 50/60 Hz, Single Phase
DS923+ 50/60 Hz, Single Phase
Power Consumption
DS224+ 14.69 watts (Access)
4.41 watts (HDD Hibernation)
DS923+ 35.51 watts (Access)
11.52 watts (HDD Hibernation)
British Thermal Unit
DS224+ 50.09 BTU/hr (Access)
15.04 BTU/hr (HDD Hibernation)
DS923+ 121.09 BTU/hr (Access)
39.28 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 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%
DS923+
  • 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
DS224+ 0°C to 40°C (32°F to 104°F)
DS923+ 0°C to 40°C (32°F to 104°F)
Storage Temperature
DS224+ -20°C to 60°C (-5°F to 140°F)
DS923+ -20°C to 60°C (-5°F to 140°F)
Relative Humidity
DS224+ 5% to 95% RH
DS923+ 5% to 95% RH
Certification
DS224+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • CCC
  • KC
DS923+
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
Warranty
DS224+ 2-year hardware warranty
DS923+ 3-year hardware warranty, extendable to 5 years with EW201
Notes
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.
DS923+
  • 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
DS224+ RoHS Compliant
DS923+ 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
DS923+
  • 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+
DS923+
Notes
DS224+ All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
DS923+
Software Specs
DSM Specifications
Storage Management
Maximum Single Volume Size
DS224+ 108 TB
DS923+ 108 TB
Maximum Internal Volume Number
DS224+ 64
DS923+ 64
M.2 SSD Storage Pool Support*
DS224+
DS923+
SSD Read/Write Cache (Determining cache size)
DS224+
DS923+
SSD TRIM
DS224+
DS923+
Supported RAID Type
DS224+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
DS923+
  • Synology Hybrid RAID
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
DS224+
  • Basic to RAID 1
DS923+
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
  • RAID 5 to RAID 6
Volume Expansion with Larger HDDs
DS224+
  • Synology Hybrid RAID
  • RAID 1
DS923+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
DS224+
  • Synology Hybrid RAID
DS923+
  • Synology Hybrid RAID
  • JBOD
  • RAID 5
  • RAID 6 (with Expansion Unit)
Global Hot Spare Supported RAID Type
DS224+
DS923+
  • Synology Hybrid RAID
  • RAID 1
  • RAID 5
  • RAID 6 (with Expansion Unit)
  • RAID 10 (with Expansion Unit)
Notes
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.
DS923+
  • 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
DS224+
  • Btrfs
  • ext4
DS923+
  • Btrfs
  • ext4
External Drives
DS224+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
DS923+
  • Btrfs
  • ext4
  • ext3
  • FAT
  • NTFS
  • HFS+
  • exFAT
File Services
File Protocol
DS224+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
DS923+
  • SMB
  • AFP
  • NFS
  • FTP
  • WebDAV
  • Rsync
Maximum Concurrent SMB/AFP/FTP Connections
DS224+ 500
DS923+ 1,000
Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)
DS224+ 1,500
DS923+ 2,000
Windows Access Control List (ACL) Integration
DS224+
DS923+
NFS Kerberos Authentication
DS224+
DS923+
Notes
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.
DS923+
  • 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
DS224+ 2,048
DS923+ 2,048
Maximum Local Groups
DS224+ 256
DS923+ 256
Maximum Shared Folder
DS224+ 256
DS923+ 512
Maximum Shared Folder Sync Tasks
DS224+ 8
DS923+ 16
Hybrid Share
Hybrid Share Folder Number
DS224+ 10
DS923+ 10
Hyper Backup
Data & Folder Backup
DS224+
DS923+
Entire System Backup
DS224+
DS923+
Notes
DS224+ Full-system backup requires DSM 7.2 or later.
DS923+ Full-system backup requires DSM 7.2 or later.
High Availability
Synology High Availability
DS224+
DS923+
Log Center
DS224+
DS923+
Syslog Events per Second
DS224+ 800
DS923+ 800
Virtualization
VMware ESXi 6.5 and VAAI
DS224+
DS923+
Windows Server 2022
DS224+
DS923+
Citrix Ready
DS224+
DS923+
OpenStack
DS224+
DS923+
General Specifications
Supported Protocols
DS224+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
DS923+ SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Supported Browsers
DS224+
  • Chrome
  • Firefox
  • Edge
  • Safari
DS923+
  • Chrome
  • Firefox
  • Edge
  • Safari
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
DS923+ 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.
DS923+ For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Central Management System
DS224+
DS923+
Synology Chat
DS224+
DS923+
Suggested Concurrent Users
DS224+ 100
DS923+ 100
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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
DS923+
  • 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.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
Download Station
DS224+
DS923+
Maximum Concurrent Download Tasks
DS224+ 80
DS923+ 80
SAN Manager
DS224+
DS923+
Maximum iSCSI Target Number
DS224+ 128
DS923+ 128
Maximum LUN
DS224+ 256
DS923+ 256
LUN Clone/Snapshot, Windows ODX
DS224+
DS923+
Synology MailPlus / MailPlus Server
DS224+
DS923+
Free Email Accounts
DS224+ 5 (Additional accounts require purchase of licenses)
DS923+ 5 (Additional accounts require purchase of licenses)
Suggested Maximum Users
DS224+ 500
DS923+ 500
Suggested Concurrent Users
DS224+ 100
DS923+ 100
Maximum Server Performance
DS224+ 1,224,000 emails per day, approx. 37GB
DS923+ 1,224,000 emails per day, approx. 37GB
Notes
DS224+
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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).
DS923+
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • 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
DS224+
DS923+
DLNA Compliance
DS224+
DS923+
Synology Photos
DS224+
DS923+
Facial Recognition
DS224+
DS923+
Object Recognition
DS224+
DS923+
Notes
DS224+ Object recognition requires an upgrade of memory capacity to a minimum of 4 GB.
DS923+
Snapshot Replication
DS224+
DS923+
Maximum Snapshots per Shared Folder
DS224+ 1,024
DS923+ 1,024
Maximum of System Snapshots
DS224+ 65,536
DS923+ 65,536
Surveillance Station
DS224+
DS923+
Default Licenses
DS224+ 2 (Additional cameras require purchase of licenses)
DS923+ 2 (Additional cameras require purchase of licenses)
Suggested Maximum IP Cameras and Total FPS (H.264)
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
DS923+
  • 720p: 40 channels, 1200 FPS
  • 1080p: 40 channels, 1050 FPS
  • 3M: 40 channels, 600 FPS
  • 5M: 30 channels, 360 FPS
  • 4K: 20 channels, 200 FPS
Suggested Maximum IP Cameras and Total FPS (H.265)
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
DS923+
  • 720p: 40 channels, 1200 FPS
  • 1080p: 40 channels, 1200 FPS
  • 3M: 40 channels, 1000 FPS
  • 5M: 40 channels, 600 FPS
  • 4K: 30 channels, 300 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 maximum number of camera stream outputs is 2 times the suggested maximum number of IP cameras.
DS923+
  • 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
DS224+
DS923+
Recommended Number of Concurrent Sync Clients
DS224+ 350 (the number of connections that can be maintained when the recommended number of hosted files was reached)
DS923+ 350 (the number of connections that can be maintained when the recommended number of hosted files was reached)
Recommended Number of Hosted Files
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)
DS923+ 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
DS224+
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
DS923+
  • Exceeding the recommended numbers above will not block application operations, but may result in longer response time.
  • Utilizing SSD cache can significantly improve performance.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office
DS224+
DS923+
Suggested Maximum Users
DS224+ 1,500
DS923+ 3,000
Suggested Concurrent Users
DS224+ 600
DS923+ 1,200
Notes
DS224+
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
DS923+
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Virtual Machine Manager
DS224+
DS923+
Recommended Virtual Machine Instances
DS224+ 2 (Learn more)
DS923+ 4 (Learn more)
Recommended Virtual DSM Number (Licenses required)
DS224+ 2 (including 1 Free License)
DS923+ 4 (including 1 Free License)
Notes
DS224+ The specifications vary depending on system configuration and memory size.
DS923+ The specifications vary depending on system configuration and memory size.
VPN Server
DS224+
DS923+
Maximum Connections
DS224+ 40
DS923+ 40