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Synology DiskStation DS1621+

 

Features

Powerful, scalable, and versatile

Synology DS1621+ is a powerful and compact 6-bay network attached storage solution designed to store and protect critical data assets. Todays growing amount of unstructured data requires smarter and increasingly higher performance methods of storing, accessing, and collaborating. Designed for scalability, the DS1621+ enables you to start small, then expand as your data grows.

  • AMD Ryzen Quad-core 2.2 GHz
  • Dual M.2 2280 slots for NVMe Cache
  • 110K, 174% higher 4K random read IOPS
  • Expand up to 16 drives with two DX517 expansion units

Faster than ever

Compared to its predecessor, DS1621+ is faster in just about everything. Get things done quicker through Synology Drive and streamline photo management with Synology Moments.

2x M.2 NVMe

Turbocharge and expand it

Upgrade your DS1621+ to match your data requirements, whether it is for faster networking or for higher storage capacity.

Ultimate file management and sharing

File Station is a web-based, fast and secure management tool built to allow easy, drag-and-drop operations without requiring any complex setup on Mac or PC. Advanced search and filtering tools allow for easy organization and file sharing. For complete compatibility, DS1621+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.

   

Fully certified storage virtualization solutions

Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.

Ultimate Backup Solution

DS1621+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

Active Backup for Business

Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.

Hyper Backup

Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.

Synology Drive

Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.

Active Backup for Microsoft 365 / G Suite

On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.

Powered by Synology DSM

Central Management System

Manage multiple Synology NAS servers simultaneously on a centralized interface to increase business efficiency.

Synology MailPlus

Secure, reliable, and private mail server solution with an intuitive and modern mail client.

Synology High Availability

Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.

Security

Comprehensive built-in security tools are constantly updated to protect your devices against evolving threats.

Synology Drive

A versatile solution for file management and synchronization.

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Works best with Synology solid-state drives

Engineered to handle intensive 24/7 workloads, Synology SSDs are designed to provide consistent high-performance.

 

  1. Status indicator
  2. Alert indicator
  3. Power button and indicator
  4. LAN indicator
  5. Drive status indicator
  6. Drive tray
  7. Drive tray lock
  8. USB 3.2 Gen 1 port
  9. System fan
  10. Power port
  11. Kensington Security Slot
  12. 1GbE RJ-45 port
  13. Reset button
  14. Expansion port
  15. PCIe expansion slot

Specifications

CPU

CPU Model

AMD Ryzen V1500B

CPU Architecture

64-bit

CPU Frequency

4-core 2.2 GHz

Hardware Encryption Engine (AES-NI)

Yes

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

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 on the recommended memory configurations, visit here.

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

6

Maximum Drive Bays with Expansion Unit

16 (DX517 x 2)

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 Single Volume Size*

108 TB

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.

Each internal volume (may consist of multiple drives) is expandable up to 108TB.

External Ports

Yes

RJ-45 1GbE LAN Port

4 (with Link Aggregation / Failover support)

USB 3.0 Port

3

eSATA Port

2

PCIe

PCIe Expansion

1 x Gen3 x8 slot (x4 link)

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 282 mm x 243 mm

Weight

5.1 kg

Others

System Fan

92 mm x 92 mm x 2 pcs

Fan Speed Mode

Full-Speed Mode

Cool Mode

Quiet Mode

Easy Replacement System Fan

Yes

Brightness Adjustable Front LED Indicators

Yes

Power Recovery

Yes

Noise Level*

25.2 dB(A)

Scheduled Power On / Off

Yes

Wake on LAN / WAN

Yes

Power Supply Unit / Adapter

250 W

AC Input Power Voltage

100 V to 240 V AC

Power Frequency

50/60 Hz, Single Phase

Power Consumption*

51.22 W (Access)

25.27 W (HDD Hibernation)

British Thermal Unit

174.77 BTU/hr (Access)

86.22 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: 24.25-25.75C; Humidity: 58.2-61.8%

Temperature

Operating Temperature

0C to 40C (32F to 104F)

Storage Temperature

-20C to 60C (-5F to 140F)

Relative Humidity

5% to 95% RH

Certification

EAC

VCCI

CCC

RCM

KC

FCC

CE

BSMI

Warranty

3 Years

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 Cord X 1

RJ-45 LAN Cable X 2

Quick Installation Guide X 1

Optional Accessories

DDR4 ECC SODIMM: D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G

Expansion Units: DX517

2.5" SATA SSD: SAT5200

M.2 2280 NVMe SSD: SNV3400

10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2

VisualStation: VS960HD/VS360HD

Surveillance Device License Pack

Notes

All memory modules will operate at the maximum frequency specified by the CPU manufacturer.

Software

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

Global Hot Spare Supported RAID Type

Synology Hybrid RAID

RAID 1

RAID 5

RAID 6

RAID 10

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

Notes

Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.

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

Yes

Log Center

Syslog Events per Second

800

Virtualization

VMware vSphere 6 with VAAI

Yes

Windows Server 2016

Yes

Windows Server 2019

Yes

Citrix Ready

Yes

OpenStack

Yes

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, Franais, Italiano, Espaol, Dansk, Norsk, Svenska, Nederlands, , Polski, Magyar, Portugus do Brasil, Portugus Europeu, Trke, esk, , , , ,

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.

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

150

Maximum Server Performance

1,484,000 emails per day, approx. 45GB

Notes

The CPU and RAM usage were both under 80% when testing the maximum number of concurrent users.

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

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)

1050 FPS @ 1080p (1920x1080)

600 FPS @ 3M (2048x1536)

440 FPS @ 5M (2591x1944)

320 FPS @ 4K (3840x2160)

Total FPS (H.265)

1200 FPS @ 720p (1280x720)

1200 FPS @ 1080p (1920x1080)

1120 FPS @ 3M (2048x1536)

600 FPS @ 5M (2591x1944)

480 FPS @ 4K (3840x2160)

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

1,000,000 (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

550 (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

1,800

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

Yes

Virtual Machine Manager

Recommended Virtual Machine Instances

Yes

Recommended Virtual DSM Number (Licenses required)

8 (including 1 Free License)

Notes

The specifications vary depending on system configuration and memory size.

VPN Server

Maximum Connections

30

No additional files, specification sheets, guides or documentation found for product.

Warranty: 36 Month Manufacturers Return To Base

Full manufacturers warranty details are available at the manufacturers (Synology) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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