Synology DiskStation Data Storage Server: Store and Access Your Data

Description

Synology DiskStation Data Storage Server

Secure cloud storage

Flexibly store up to 72 TB of data¹ with 100% ownership and enjoy multi-platform access from anywhere.

Data sharing made easy

Safely share files and media over your private cloud for easier collaboration and better productivity.

Versatile video surveillance

Leverage intuitive surveillance tools to protect your premises and store footage from up to 30 IP cameras.²

Create a private cloud hub for your data

Import and sync data scattered across PCs, Macs, phones, and external storage devices to implement well-organized file management for your business. Learn more

Multi-device access

Browse, access, edit, and share files securely and conveniently via desktop, mobile, or web browser platforms. Use intuitive admin tools to track and set file permissions and control access to documents, files, and other data.

On-demand sync

Save space on your personal devices by only synchronizing the files you need from your Synology system. Pin frequently accessed files for convenient offline accessibility.

Cloud integration

Sync your private storage servers with public cloud services such as Google Drive, Dropbox, and Microsoft OneDrive. Retain local copies of your cloud data for centralized management and data ownership.

Hardware Specifications
CPU	CPU Model	Realtek RTD1619B
	CPU Quantity	1
	CPU Core	4
	CPU Architecture	64-bit
	CPU Frequency	1.7 GHz
	Hardware Encryption Engine
Memory	System Memory	2 GB DDR4 non-ECC
	Notes	Synology reserves the right to replace memory modules with the same or higher frequency based on supplier’s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
Storage	Drive Bays	4
	Compatible Drive Type* (See all supported drives)	3.5″ SATA HDD 2.5″ SATA SSD
	Hot Swappable Drive*
	Notes	“Compatible drive type” indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
External Ports	RJ-45 1GbE LAN Port	2 (with Link Aggregation / Failover support)
	USB 3.2 Gen 1 Port*	2
	Notes	This device’s 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
Appearance	Size (Height x Width x Depth)	184 mm x 168 mm x 230 mm
	Weight	2.21 kg
Others	System Fan	80 mm x 80 mm x 2 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Brightness Adjustable Front LED Indicators
	Power Recovery
	Noise Level*	20.6 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	90 W
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	32.41 W (Access) 4.97 W (HDD Hibernation)
	British Thermal Unit	110.52 BTU/hr (Access) 16.95 BTU/hr (HDD Hibernation)
	Notes	For more information on how power consumption is measured, refer to this article. Noise Level Testing Environment: Fully loaded with Seagate 2TB ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature	Operating Temperature	0°C to 40°C (32°F to 104°F)
	Storage Temperature	-20°C to 60°C (-5°F to 140°F)
	Relative Humidity	5% to 95% RH
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC
Warranty	2-year hardware warranty, extendable to 4 years with Extended Warranty Plus
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1
Optional Accessories	Enterprise Series 3.5″ SATA HDD: HAT5300 Series Plus Series 3.5″ SATA HDD: HAT3300 Series Enterprise Series 2.5″ SATA SSD: SAT5200 Series

DSM Specifications
Storage Management	Maximum Single Volume Size	108 TB
	Maximum Internal Volume Number	64
	SSD TRIM
	Supported RAID Type	Synology Hybrid RAID Basic JBOD RAID 0 RAID 1 RAID 5 RAID 6 RAID 10
	RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
	Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
	Volume Expansion by Adding a HDD	Synology Hybrid RAID JBOD RAID 5
	Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5
	Notes	Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored. Actual maximum storage pool and volume sizes vary depending on drives used, the number of drive bays available, and the RAID configuration.
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Concurrent SMB/AFP/FTP Connections	200
	Windows Access Control List (ACL) Integration
	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.
Account & Shared Folder	Maximum Local User Accounts	1,024
	Maximum Local Groups	256
	Maximum Shared Folder	256
	Maximum Shared Folder Sync Tasks	4
Hybrid Share	Hybrid Share Folder Number	5
Hyper Backup	Folder and Package Backup
Log Center	Syslog Events per Second	400
General Specifications	Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
	Supported Browsers	Chrome Firefox Edge Safari
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Synology Chat
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager	Maximum iSCSI Target Number	128
	Maximum LUN	256
	LUN Clone/Snapshot, Windows ODX
Media Server	DLNA Compliance
Synology Photos	Facial Recognition
Snapshot Replication	Maximum Snapshots per Shared Folder	256
	Maximum of System Snapshots	4,096
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	720p: 30 channels, 900 FPS 1080p: 30 channels, 600 FPS 3M: 30 channels, 300 FPS 5M: 20 channels, 200 FPS 4K: 15 channels, 150 FPS
	Suggested Maximum IP Cameras and Total FPS (H.265)	720p: 30 channels, 900 FPS 1080p: 30 channels, 800 FPS 3M: 30 channels, 500 FPS 5M: 30 channels, 450 FPS 4K: 20 channels, 200 FPS
	Notes	Performance figures are obtained from testing conducted with the device fully populated with drives, 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)
	Recommended Number of Hosted Files	500,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)
	Notes	Exceeding the recommended numbers above will not block application operations, but may result in longer response time. Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
Synology Office	Suggested Maximum Users	500
	Suggested Concurrent Users	200
	Notes	Multiple files were opened for testing and each file was edited by 30 users simultaneously. Client performance may affect maximum simultaneous editing users. Client PCs used for testing: Intel Core i3-3220 / 8GB RAM
Video Station
VPN Server	Maximum Connections	20

Hardware Specifications
CPU	CPU Model	Intel Celeron J4125
	CPU Quantity	1
	CPU Core	4
	CPU Architecture	64-bit
	CPU Frequency	2.0 (base) / 2.7 (turbo) GHz
	Hardware Encryption Engine
Memory	System Memory	2 GB DDR4 non-ECC
	Total Memory Slots	1
	Maximum Memory Capacity	6 GB (2 GB + 4 GB)
	Notes	Synology reserves the right to replace memory modules with the same or higher frequency based on supplier’s product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage	Drive Bays	4
	M.2 Drive Slots	2 (NVMe)
	Compatible Drive Type* (See all supported drives)	3.5″ SATA HDD 2.5″ SATA SSD M.2 2280 NVMe SSD
	Hot Swappable Drive*
	Notes	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 (with Link Aggregation / Failover support)
	USB 3.2 Gen 1 Port*	2
	Notes	This device’s 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes. The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.
Appearance	Size (Height x Width x Depth)	166 mm x 199 mm x 223 mm
	Weight	2.18 kg
Others	System Fan	92 mm x 92 mm x 2 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Brightness Adjustable Front LED Indicators
	Power Recovery
	Noise Level*	19.8 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	90 W
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	28.3 W (Access) 8.45 W (HDD Hibernation)
	British Thermal Unit	96.5 BTU/hr (Access) 28.81 BTU/hr (HDD Hibernation)
	Notes	For more information on how power consumption is measured, refer to this article. Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature	Operating Temperature	0°C to 40°C (32°F to 104°F)
	Storage Temperature	-20°C to 60°C (-5°F to 140°F)
	Relative Humidity	5% to 95% RH
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC
Warranty	3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1
Optional Accessories	DDR4 non-ECC SODIMM: D4NESO-2666-4G Enterprise Series 3.5″ SATA HDD: HAT5300 Series Plus Series 3.5″ SATA HDD: HAT3300 Series Enterprise Series 2.5″ SATA SSD: SAT5200 Series Enterprise Series M.2 2280 NVMe SSD: SNV3400 Series

DSM Specifications
Storage Management	Maximum Single Volume Size	108 TB
	Maximum Internal Volume Number	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 RAID 5 RAID 10
	RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
	Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
	Volume Expansion by Adding a HDD	Synology Hybrid RAID JBOD RAID 5
	Global Hot Spare Supported RAID Type	Synology Hybrid RAID RAID 1 RAID 5
	Notes	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 vary depending on drives used, the number of drive bays available, and the RAID configuration.
File System	Internal Drives	Btrfs ext4
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Concurrent SMB/AFP/FTP Connections	500
	Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)	1,500
	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.
Account & Shared Folder	Maximum Local User Accounts	2,048
	Maximum Local Groups	256
	Maximum Shared Folder	512
	Maximum Shared Folder Sync Tasks	8
Hybrid Share	Hybrid Share Folder Number	10
Hyper Backup	Folder and Package Backup
	Entire System Backup
	Notes	Full-system backup requires DSM 7.2 or later.
High Availability	Synology High Availability
Log Center	Syslog Events per Second	800
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
	Supported Browsers	Chrome Firefox Edge Safari
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Add-on Packages view the complete package list
Antivirus by McAfee (Trial)
Central Management System
Synology Chat	Suggested Concurrent Users	100
	Notes	Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds. When applicable, tested systems are configured with maximum memory and set to allow the maximum number of connections.
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager	Maximum iSCSI Target Number	128
	Maximum LUN	256
	LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server	Free Email Accounts	5 (Additional accounts require purchase of licenses)
	Suggested Maximum Users	500
	Suggested Concurrent Users	100
	Maximum Server Performance	1,224,000 emails per day, approx. 37GB
	Notes	Models with more than 4 bays were installed with two SSDs for SSD cache. 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
	Maximum of System Snapshots	65,536
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	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: 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.
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)
	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)
	Notes	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	3,000
	Suggested Concurrent Users	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
Video Station
Virtual Machine Manager	Recommended Virtual Machine Instances	2 (Learn more)
	Recommended Virtual DSM Number (Licenses required)	2 (including 1 Free License)
	Notes	The specifications vary depending on system configuration and memory size.
VPN Server	Maximum Connections	40

Hardware Specifications

CPU	CPU Model	AMD Ryzen R1600
	CPU Quantity	1
	CPU Core	2
	CPU Architecture	64-bit
	CPU Frequency	2.6 (base) / 3.1 (turbo) GHz
	Hardware Encryption Engine
Memory	System Memory	4 GB DDR4 ECC SODIMM
	Memory Module Pre-installed	4 GB (4 GB x 1)
	Total Memory Slots	2
	Maximum Memory Capacity	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. For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage	Drive Bays	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 M.2 2280 NVMe SSD
	Hot Swappable Drive*
	Notes	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 (with Link Aggregation / Failover support)
	USB 3.2 Gen 1 Port*	2
	eSATA Port	1
	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.
PCIe	PCIe Expansion	1 x Gen3 x2 network upgrade slot
Appearance	Size (Height x Width x Depth)	166 mm x 199 mm x 223 mm
	Weight	2.24 kg
Others	System Fan	92 mm x 92 mm x 2 pcs
	Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode
	Brightness Adjustable Front LED Indicators
	Power Recovery
	Noise Level*	22.9 dB(A)
	Scheduled Power On / Off
	Wake on LAN / WAN
	Power Supply Unit / Adapter	100 W
	AC Input Power Voltage	100V to 240V AC
	Power Frequency	50/60 Hz, Single Phase
	Power Consumption	35.51 W (Access) 11.52 W (HDD Hibernation)
	British Thermal Unit	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 state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
Temperature	Operating Temperature	0°C to 40°C (32°F to 104°F)
	Storage Temperature	-20°C to 60°C (-5°F to 140°F)
	Relative Humidity	5% to 95% RH
Certification	FCC CE BSMI VCCI RCM UKCA EAC CCC KC
Warranty	3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
	Notes	The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions. (Learn more)
Environment	RoHS Compliant
Packaging Content	Main Unit X 1 Accessory Pack X 1 AC Power Adapter X 1 AC Power Cord X 1 RJ-45 LAN Cable X 2 Quick Installation Guide X 1
Optional Accessories	DDR4 ECC SODIMM: D4ES02-4G/D4ES02-8G/D4ES01-16G Expansion Units: DX517 Enterprise Series 3.5″ SATA HDD: HAT5300 Series Plus Series 3.5″ SATA HDD: HAT3300 Series Enterprise Series 2.5″ SATA SSD: SAT5200 Series Enterprise Series M.2 2280 NVMe SSD: SNV3400 Series 10GbE Network Upgrade Module: E10G22-T1-Mini

Add-on Packages view the complete package list
Storage Management	Maximum Single Volume Size	108 TB
	Maximum Internal Volume Number	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 RAID 5 RAID 6 RAID 10
	RAID Migration	Basic to RAID 1 Basic to RAID 5 RAID 1 to RAID 5 RAID 5 to RAID 6
	Volume Expansion with Larger HDDs	Synology Hybrid RAID RAID 1 RAID 5 RAID 6 RAID 10
	Volume Expansion by Adding a HDD	Synology Hybrid RAID JBOD RAID 5 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	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 vary depending on drives 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
	External Drives	Btrfs ext4 ext3 FAT NTFS HFS+ exFAT
File Services	File Protocol	SMB AFP NFS FTP WebDAV Rsync
	Maximum Concurrent SMB/AFP/FTP Connections	1,000
	Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion)	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.
Account & Shared Folder	Maximum Local User Accounts	2,048
	Maximum Local Groups	256
	Maximum Shared Folder	512
	Maximum Shared Folder Sync Tasks	16
Hybrid Share	Hybrid Share Folder Number	10
Hyper Backup	Folder and Package Backup
	Entire System Backup
	Notes	Full-system backup requires DSM 7.2 or later.
High Availability	Synology High Availability
Log Center	Syslog Events per Second	800
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
	Supported Browsers	Chrome Firefox Edge Safari
	Supported Language	English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文
	Notes	For an updated list of supported browser versions, check the DSM Technical Specifications.
Antivirus by McAfee (Trial)
Central Management System
Synology Chat	Suggested Concurrent Users	100
	Notes	Measured with simulated users, each with an average record of 20,000 messages, emojis, or stickers. The required server response time is below ten seconds. When applicable, tested systems are configured with maximum memory and set to allow the maximum number of connections.
Download Station	Maximum Concurrent Download Tasks	80
SAN Manager	Maximum iSCSI Target Number	128
	Maximum LUN	256
	LUN Clone/Snapshot, Windows ODX
Synology MailPlus / MailPlus Server	Free Email Accounts	5 (Additional accounts require purchase of licenses)
	Suggested Maximum Users	500
	Suggested Concurrent Users	100
	Maximum Server Performance	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).
Media Server	DLNA Compliance
Synology Photos	Facial Recognition
	Object Recognition
Snapshot Replication	Maximum Snapshots per Shared Folder	1,024
	Maximum of System Snapshots	65,536
Surveillance Station	Default Licenses	2 (Additional cameras require purchase of licenses)
	Suggested Maximum IP Cameras and Total FPS (H.264)	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: 40 channels, 1200 FPS 1080p: 40 channels, 1200 FPS 3M: 40 channels, 1000 FPS 5M: 40 channels, 600 FPS 4K: 30 channels, 300 FPS

Additional information

Weight	N/A
Dimensions	N/A
Model	DS423, DS423+, DS923+

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Synology DiskStation Data Storage Server

DiskStation DS423, DS423+, DS923+

Warranty : 2 Years

Description

Secure cloud storage

Data sharing made easy

Versatile video surveillance