Synology DS920+ NAS DiskStation 4-Bays

Synology DS920+
  
NAS DiskStation 4-Bays

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DiskStation DS920+

Scalable NAS with SSD cache acceleration capability

Synology DS920+ is an ideal network-attached storage solution to streamline data management and productivity. Two built-in M.2 SSD slots and Synology SSD Cache technology allow you to boost system I/O and application performance. Scalable storage design lets you start small and expand storage capacity with Synology DX517 as your data grows.
CPU

CPU

4-core 2.0 GHz, burst up to 2.7 GHz
Cache Acceleration

Cache Acceleration

2 x built-in M.2 2280 NVMe SSD slots
Performance

Performance

Average 15% boost to computing-intensive applications
Scalability

Scalability

Expand up to 9 drives with a DX517 expansion unit
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Optimize performance and capacity

DS920+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays. You can add five more drives with Synology DX517 to expand storage capacity.

Accelerate demanding applications

A more powerful CPU speeds up computing-intensive applications. The new 4-core processor boosts photo indexing, database response times, and web PHP response efficiency. Easily categorize your photo memories, smoothly manage files across computers and mobile devices, and enjoy blazing fast web applications.
15.5% Synology Drive faster in file indexing90%
24% Moments faster in photo indexing80%
133% Web server faster PHP response50%
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Access and sync your files seamlessly

Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more

 ● Sync files on demand: Save the storage space and network bandwidth of your          PC.
 ● Go back in time: Easily retrieve previous versions of your shared files.
 ● Back up your data: Protect your files with scheduled backups or in real-time.

Access and sync your files seamlessly

Synology Drive provides a built-in universal portal to access your data anytime and anywhere, and synchronize all your files across platforms, including Windows, macOS, Linux, Android, and iOS. Learn more

 ● Sync files on demand: Save the storage space and network bandwidth of your PC.
 ● Go back in time: Easily retrieve previous versions of your shared files.
 ● Back up your data: Protect your files with scheduled backups or in real-time.

Real-time collaboration on your private cloud

Synology Office is a collaboration package combining the convenience and usability of public clouds with the data privacy and security guaranteed by private clouds. It allows you to work seamlessly together on documents and spreadsheets in a protected environment. Learn more
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Virtual Machine Manager

Virtual Machine Manager enables you to test new software in sandboxes, isolate your customers' machines, and increase the flexibility of your server. You can easily run Windows, Linux, and Virtual DSM on your Synology NAS by just a few steps. Learn more
Snapshots for virtual machines

Snapshots for virtual machines

Perfectly clone and restore a virtual machine within seconds.
Live migration

Live migration

Seamlessly migrate Virtual DSM instances from a Synology NAS to another.
Live migration

Live migration

Seamlessly migrate Virtual DSM instances from a Synology NAS to another.

Powered by Synology DSM

Multimedia

Multimedia

Complete multimedia solution for management, streaming, and playback.
Learn more

Hyper Backup

Hyper Backup

Store multiple backup versions with block-level incremental data backup and cross-version deduplication.
Learn more

Desktop Backup

Desktop Backup

Simplified backup solution for your Mac, PC, and mobile devices.
Learn more

Snapshot Replication

Snapshot Replication

Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.
Learn more

Surveillance Station

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.
Learn more

Virtual Machine Manager

Virtual Machine Manager

Run various operating systems in isolated sandboxes. Seamlessly clone, restore and migrate virtual machines.
Learn more

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1. Status indicator
2. Drive status indicator
3. Drive tray lock
4. USB 3.0 port
5. Power button and indicator
6. Drive tray
  7. 1GbE RJ-45 port 
  8. Reset button

  9. eSATA port
10. Power port
11. System fan
12. Kensington Security Slot

Hardware Specifications

 CPU
 CPU Model  Intel Celeron J4125 4-core 2.0 GHz, burst up to 2.7 GHz
 CPU Architecture  64-bit
 CPU Frequency  4-core 2.0 (base) / 2.7 (burst) GHz
 Hardware Encryption Engine (AES-NI)  Yes 
 Memory
 System Memory  4 GB DDR4 non-ECC
 Memory Module Pre-installed  4 GB (4 GB x 1)
 Total Memory Slots  2
 Memory Expandable up to  8 GB (4 GB x 2)
 Notes
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
 Storage
 Drive Bays  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 HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
 Maximum Internal Raw Capacity  64 TB (16 TB drive x 4) (Capacity may vary by RAID types)
 Maximum Raw Capacity with Expansion Units  144 TB (64 TB + 16 TB drive x 5) (Capacity may vary by RAID types)
 Maximum Single Volume Size*  108 TB
 Hot Swappable Drive  Yes 
 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 maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)
  • Each internal volume (may consist of multiple drives) is expandable up to 108TB.
 External Ports
 RJ-45 1GbE LAN Port  2 (with Link Aggregation / Failover support)
 USB 3.0 Port  2
 eSATA Port  1
 File System
 Internal Drives
  • Btrfs
  • EXT4
 External Drives
  • Btrfs
  • EXT4
  • EXT3
  • FAT
  • NTFS
  • HFS+
  • exFAT*
 Notes  exFAT Access is purchased separately in Package Center.
 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
 Yes 
 Power Recovery  Yes 
 Noise Level*  19.8 dB(A)
 Scheduled Power On / Off  Yes 
 Wake on LAN / WAN  Yes 
 Power Supply Unit / Adapter  100 W
 AC Input Power Voltage  100 V to 240 V AC
 Power Frequency  50/60 Hz, Single Phase
 Power Consumption*  32.17 W (Access)
 9.69 W (HDD Hibernation)
 British Thermal Unit  109.84 BTU/hr (Access)
 33.09 BTU/hr (HDD Hibernation)
 Notes
  • Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
  • 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%
 Environment Temperature
 Operating Temperature  5°C to 40°C (40°F to 104°F)
 Storage Temperature  -20°C to 60°C (-5°F to 140°F)
 Relative Humidity  5% to 95% RH
 Certification
 Certification
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI
 Warranty  3-year hardware warranty, extendable to 5-year coverage - EW201
 Notes  The warranty period starts from the purchase date as stated on your purchase receipt. (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
 DSM Specifications
 Storage Management
 Maximum Internal Volume Number  64
 Maximum iSCSI Target Number  128
 Maximum iSCSI LUN  256
 iSCSI LUN Clone/Snapshot,
 Windows ODX
 Yes
 SSD Read / Write Cache (White Paper)  Yes 
 SSD TRIM  Yes 
 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)
 File Services
 File Protocol  CIFS/AFP/NFS/FTP/WebDAV
 Maximum Concurrent CIFS/AFP/FTP
 Connections
 1,000
 Maximum Concurrent CIFS/AFP/FTP
 Connections   (with RAM expansion)
 2,000
 Windows Access Control List (ACL)
 Integration
 Yes
 NFS Kerberos Authentication  Yes 
 Account & Shared Folder
 Maximum Local User Accounts  2,048
 Maximum Local Groups  256
 Maximum Shared Folder  512
 Maximum Shared Folder Sync Tasks  16
 High Availability
 Synology High Availability
 Log Center
 Syslog Events per Second  800
 Virtualization

 
 VMware vSphere 6 with VAAI

 Windows Server 2016

 Citrix Ready

 OpenStack 

 General Specifications
 Networking Protocols  SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP,   CalDAV
 Supported Browsers
  • Chrome
  • Firefox
  • Edge
  • Internet Explorer 10 onwards
  • Safari 10 onwards
  • Safari (iOS 10 onwards)
  • Chrome (Android 6.0 onwards)
 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
 Add-on Packages (view the complete package list)

 Antivirus by McAfee (Trial)

 Yes

 Central Management  System  Yes
 Synology Chat
 Maximum Users  1,500
 Notes
  • The number of concurrent HTTP connections for Synology Chat was configured to the maximum.
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
 Cloud Station Server
 Recommended Number of Hosted Files  500,000
 Recommended Number of Concurrent Sync Clients  450 (the number of connections that can be maintained when the recommended number of hosted files was
 reached)
 Notes
  • The maximum number of concurrently connected devices refers to the maximum number of devices that can remain connected at the same time.
  • The maximum number of hosted files refers to the maximum number of files that can be indexed and hosted by the Cloud Station Server service. RAM expansion was not used during testing.
  • Non-encrypted shared folders were used during the aforementioned testing.

 Document Viewer
 Yes
 Download Station
 Maximum Concurrent Download Tasks  80
 exFAT Access (Optional)  Yes
 Synology MailPlus / MailPlus Server
 Free Email Accounts  5 (Licenses required for additional accounts)
 Maximum Number of Concurrent Users  100
 Maximum Server Performance  1,224,000 emails per day, approx. 37GB
 Notes
  • The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Read-write SSD cache was enabled in 5-bay (and above) NAS models with 2 SSDs units 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  Yes
 Moments
 Facial Recognition  Yes
 Subject Recognition  Yes
 Auto Color & Rotate  Yes 
 Moments Select  Yes 
 Snapshot Replication
 Maximum Snapshots per Shared Folder  1,024
 Maximum of System Snapshots  65,536
 Surveillance Station
 Maximum IP cam (Licenses required)  40 (including 2 Free License) (See All Supported IP Cameras)
 Total FPS (H.264)  1200 FPS @ 720p (1280x720)
 840 FPS @ 1080p (1920x1080)
 550 FPS @ 3M (2048x1536)
 300 FPS @ 5M (2591x1944)
 180 FPS @ 4K (3840x2160)
 Total FPS (H.265)  1200 FPS @ 720p (1280x720)
 1200 FPS @ 1080p (1920x1080)
 900 FPS @ 3M (2048x1536)
 550 FPS @ 5M (2591x1944)
 300 FPS @ 4K (3840x2160)
 Total FPS (MJPEG)  720 FPS @ 720p (1280x720)
 500 FPS @ 1080p (1920x1080)
 330 FPS @ 3M (2048x1536)
 200 FPS @ 5M (2591x1944)
 Notes
  • Surveillance Station throughput is tested with Axis network camera, using continuous recording with live view from Surveillance Station and motion detection by camera. Live view and recording are sharing the same stream from the camera.
  • The maximum channel number also includes devices installed on Virtual DSM.
  • Total FPS may be affected by other services running at the same time (e.g., archive tasks performed by Archive Vault).
 Synology Drive
 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)
 Recommended Number of Concurrent
 Sync Clients
 600 (the number of connections that can be maintained when the recommended number of hosted files was reached)
 Notes
  • For tested models with expandable memory, the maximum amount of RAM was installed.
  • Exceeding the limits above may result in longer response time in file operations.
  • Btrfs file system and non-encrypted shared folders were used during the aforementioned testing.
 Synology Office
 Maximum Users  3,400
 Notes
  • Multiple files were opened for testing and each file was edited by 30 users simultaneously.
  • CPU and RAM usage were both under 80% when the number of maximum users was reached.
  • 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
 Video Transcoding  4K Group 1 (See more)
 Maximum Transcoding Channel
 Number
 2 channel, 30 FPS @ 4K (4096 x 2160), H.264 (AVC)/H.265 (HEVC) or
 2 channel, 30 FPS @ 1080p (1920×1080), H.264 (AVC)/H.265 (HEVC)/MPEG-2/VC-1
 Virtual Machine Manager
 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  30

Note:

*Model specifications are subject to change without notice. Please refer to www.synology.com for the latest information.

1. Performance figures may vary depending on environment, usage, and configuration.
2. DS920+ supports one Synology DX517, sold separately.
3. DS920+ can transcode 4K video to 1080p or lower. The maximum number of concurrent video transcoding channels supported may vary depending on the video codec, resolution,
bitrate and FPS.
4. exFAT Access is purchased separately in Package Center.
5. The warranty period starts from the purchase date as stated on your purchase receipt. Visit https://www.synology.com