Synology 4-Bay NAS DiskStation DS923+

CPU

• CPU Model AMD Ryzen R1600
• CPU Quantity 1
• CPU Architecture 64-bit
• CPU Frequency 2-core 2.6 (base) / 3.1 (turbo) GHz
• Hardware Encryption Engine (AES-NI)

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 rnThe hot swappable drive feature is not supported by M.2 SSD slots.rn"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 PortsrnRJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support)rnUSB 3.2 Gen 1 Port* 2rneSATA Port 1

Notes rnThis device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.rnThe USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.

• PCIernPCIe Expansion 1 x Gen3 x2 network upgrade slot
• AppearancernSize (Height x Width x Depth) 166 mm x 199 mm x 223 mmrnWeight 2.24 kg
• OthersrnSystem Fan 92 mm x 92 mm x 2 pcsrnFan Speed Mode rnFull-Speed ModernCool ModernQuiet ModernBrightness Adjustable Front LED Indicators rnPower Recovery rnNoise Level* 22.9 dB(A)rnScheduled Power On / Off rnWake on LAN / WAN rnPower Supply Unit / Adapter 100 WrnAC Input Power Voltage 100V to 240V ACrnPower Frequency 50/60 Hz, Single PhasernPower Consumption 35.51 W (Access)rn11.52 W (HDD Hibernation)rnBritish Thermal Unit 121.09 BTU/hr (Access)rn39.28 BTU/hr (HDD Hibernation)

• Notes rnFor more information on how power consumption is measured, refer to this article.rnNoise 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%
• TemperaturernOperating Temperature 0°C to 40°C (32°F to 104°F)rnStorage Temperature -20°C to 60°C (-5°F to 140°F)rnRelative Humidity 5% to 95% RH
• rnCPUrnCPU Model AMD Ryzen R1600rnCPU Quantity 1rnCPU Architecture 64-bitrnCPU Frequency 2-core 2.6 (base) / 3.1 (turbo) GHzrnHardware Encryption Engine (AES-NI) rnMemoryrnSystem Memory 4 GB DDR4 ECC SODIMMrnMemory Module Pre-installed 4 GB (4 GB x 1)rnTotal Memory Slots 2rnMaximum Memory Capacity 32 GB (16 GB x 2)rnNotes rnSynology 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.rnPlease 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.rnFor more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.rnStoragernDrive Bays 4rnMaximum Drive Bays with Expansion Unit 9 (DX517 x 1)rnM.2 Drive Slots 2 (NVMe)rnCompatible Drive Type* (See all supported drives) rn3.5" SATA HDDrn2.5" SATA SSDrnM.2 2280 NVMe SSDrnHot Swappable Drive* rnNotes rnThe hot swappable drive feature is not supported by M.2 SSD slots.rn"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.rnExternal PortsrnRJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support)rnUSB 3.2 Gen 1 Port* 2rneSATA Port 1rnNotes rnThis device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.rnThe USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.rnPCIernPCIe Expansion 1 x Gen3 x2 network upgrade slotrnAppearancernSize (Height x Width x Depth) 166 mm x 199 mm x 223 mmrnWeight 2.24 kgrnOthersrnSystem Fan 92 mm x 92 mm x 2 pcsrnFan Speed Mode rnFull-Speed ModernCool ModernQuiet ModernBrightness Adjustable Front LED Indicators rnPower Recovery rnNoise Level* 22.9 dB(A)rnScheduled Power On / Off rnWake on LAN / WAN rnPower Supply Unit / Adapter 100 WrnAC Input Power Voltage 100V to 240V ACrnPower Frequency 50/60 Hz, Single PhasernPower Consumption 35.51 W (Access)rn11.52 W (HDD Hibernation)rnBritish Thermal Unit 121.09 BTU/hr (Access)rn39.28 BTU/hr (HDD Hibernation)rnNotes rnFor more information on how power consumption is measured, refer to this article.rnNoise 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%rnTemperaturernOperating Temperature 0°C to 40°C (32°F to 104°F)rnStorage Temperature -20°C to 60°C (-5°F to 140°F)rnRelative Humidity 5% to 95% RHrnCertificationrnFCCrnCErnBSMIrnVCCIrnRCMrnUKCArnEACrnCCCrnKC
• Warrantyrn3-year hardware warranty, extendable to 5 years with Extended Warranty PlusrnNotes rnThe warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)rnExtended 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)
• EnvironmentrnRoHS Compliant

• 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

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 (White Paper)
• 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

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 Folder Number 10

       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 Avilability

• 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, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, ?eský, ???????, ???, ???, ????, ????

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
• 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).

        Median Serve

       
      DLNA Compliance

Synology Photos

• Facial Recognition
• Object Recognition

Snapchat 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)
• 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
• 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
• Notes
• Performance figures are obtained from testing conducted with the device fully populated with drives under a continuous recording setup. Actual system capabilities may vary based on configuration, drive performance, enabled features, and the presence of additional workloads.
• Use NVR Selector to quickly find a suitable model based on your requirements.

Synology Office

• 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.

         Virtual Machine Mnager

• Recommended Virtual Machine Instances 4 (Learn more)
• Recommended Virtual DSM Number (Licenses required) 4 (including 1 Free License)
• Notes The specifications vary depending on system configuration and memory size.

       VPN Server

• Maximum Connections 40