DSM Specifications

Storage Management

Storage Management Maximum Internal Volume Number 128

Maximum iSCSI Target Number 256

Maximum iSCSI LUN 512

iSCSI LUN Clone/Snapshot, Windows ODX

SSD Read / Write Cache (White Paper)

SSD TRIM

RAID Group

Supported RAID Type RAID F1

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 RAID F1

RAID 1

RAID 5

RAID 6

RAID 10

Volume Expansion by Adding a HDD RAID F1

JBOD

RAID 5

RAID 6

Global Hot Spare Supported RAID Type RAID F1

RAID 1

RAID 5

RAID 6

RAID 10

File Services

File Services File Protocol CIFS/AFP/NFS/FTP/WebDAV

Maximum Concurrent CIFS/AFP/FTP Connections 2,000

Maximum Concurrent CIFS/AFP/FTP Connections (with RAM expansion) 10,000

Windows Access Control List (ACL) Integration

NFS Kerberos Authentication

Account & Shared Folder

Account & Shared Folder Maximum Local User Accounts 16,000

Maximum Local Groups 512

Maximum Shared Folder 512

Maximum Shared Folder Sync Tasks 32

High Availability

High Availability Synology High Availability

Log Center

Log Center

Syslog Events per Second 3,000

Virtualization

Virtualization VMware vSphere 6 with VAAI

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016

Windows Server 2019

Citrix Ready

OpenStack

General Specifications

General Specifications Networking Protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV

Supported Browsers Google Chrome

Firefox

Microsoft Edge

Internet Explorer 10 onwards

Safari 10 onwards

Safari (iOS 10 onwards)

Google 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)

Antivirus by McAfee (Trial)

Central Management System

Central Management System

Synology Chat

Synology Chat

Maximum Users 4,000

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

Cloud Station Server

Recommended Number of Hosted Files 3,000,000

Recommended Number of Concurrent Sync Clients 1,800 (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

Document Viewer

Download Station

Download Station

Maximum Concurrent Download Tasks 80

exFAT Access (Optional)

exFAT Access (Optional)

Synology MailPlus / MailPlus Server

Synology MailPlus / MailPlus Server

Free Email Accounts 5 (Licenses required for additional accounts)

Maximum Number of Concurrent Users 500

Maximum Server Performance 3,595,000 emails per day, approx. 109GB

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

Media Server

DLNA Compliance

Moments

Moments

Facial Recognition

Subject Recognition

Auto Color & Rotate

Moments Select

PetaSpace

PetaSpace

Snapshot Replication

Snapshot Replication

Maximum Snapshots per Shared Folder 1,024

Maximum of System Snapshots 65,536

Surveillance Station

Surveillance Station

Total FPS (H.264) 2250 FPS @ 720p (1280x720)

2100 FPS @ 1080p (1920x1080)

1500 FPS @ 3M (2048x1536)

900 FPS @ 5M (2591x1944)

550 FPS @ 4K (3840x2160)

Total FPS (H.265) 2250 FPS @ 720p (1280x720)

2250 FPS @ 1080p (1920x1080)

2250 FPS @ 3M (2048x1536)

1500 FPS @ 5M (2591x1944)

900 FPS @ 4K (3840x2160)

Total FPS (MJPEG) 750 FPS @ 720p (1280x720)

375 FPS @ 1080p (1920x1080)

250 FPS @ 3M (2048x1536)

180 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

Synology Drive

Recommended Number of Hosted Files 3,000,000 (applies to files indexed or hosted by Synology Drive. For file access through other standard protocols, refer to the File Services section above)

Recommended Number of Concurrent Sync Clients 1,800 (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

Synology Office

Maximum Users 2,900

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 Station

Video Transcoding Group 1 - Type 1 (See more)

Maximum Transcoding Channel Number 1 channel, 30 FPS @ 1080p(1920×1080), H.264 (AVC)/MPEG-4 Part 2 (XVID, DIVX5)/MPEG-2/VC-1

Virtual Machine Manager

Virtual Machine Manager

Recommended Virtual Machine Instances 8 (Learn more)

Recommended Virtual DSM Number (Licenses required) 8 (including 1 Free License)

Notes The specifications vary depending on system configuration and memory size.

VPN Server

VPN Server