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Synology DiskStation DS1621xs+
On-premises cloud solution built for performance

Synology Products
Synology DiskStation
Synology DiskStation DS1621xs+ 6 Bay On-Premise Cloud NAS Storage System
#DS1621xs+
Our Price: $1,599.99
Synology Recommended Bundles- Exos Bundles
48TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos 7E8 HDD 512E/4kn SATA Hard Drive (QTY 6x8TB) 48TB Capacity
#DS-Exos-103
Our Price: $3,161.00
60TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X10 HDD 512E SATA Hard Drive (QTY 6x10TB) 60TB Capacity
#DS-Exos-104
Our Price: $3,684.00
72TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X14 HDD 512E/4KN SATA Hard Drive (QTY 6x12TB) 72TB Capacity
#DS-Exos-105
Our Price: $3,684.00
84TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X16 HDD 512E/4KN SATA Hard Drive (QTY 6x14TB) 84TB Capacity
#DS-Exos-106
Our Price: $4,075.00
96TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X16 HDD 512E SATA SED Hard Drive (QTY 6x16TB) 96TB Capacity
#DS-Exos-107
Our Price: $4,195.00
Synology Recommended Bundles- Ironwolf Bundles
24TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x4TB) 24TB Capacity
#DS-Ironwolf-87
Our Price: $2,462.00
36TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x6TB) 36TB Capacity
#DS-Ironwolf-88
Our Price: $2,759.00
48TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x8TB) 48TB Capacity
#DS-Ironwolf-89
Our Price: $3,152.00
60TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x10TB) 60TB Capacity
#DS-Ironwolf-90
Our Price: $3,504.00
72TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x12TB) 72TB Capacity
#DS-Ironwolf-91
Our Price: $3,752.00
84TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x14TB) 84TB Capacity
#DS-Ironwolf-92
Our Price: $4,249.00
96TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x16TB) 96TB Capacity
#DS-Ironwolf-93
Our Price: $4,498.00

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Overview:

Synology DiskStation DS1621xs+ is a highend, high-performance NAS solution that supports every aspect of your business with powerful data management, collaboration, and networking tools topped off with wellrounded data protection mechanisms in a 6-bay desktop chassis. Built-in M.2 SSD cache slots, 10GbE connectivity, scalable storage, and Synology 5-year limited warranty make DS1621xs+ a future-proof choice to build onpremises cloud infrastructure.

  • Built for High-Speed Connectivity
    Combine built-in 10GbE and optional high-speed NIC for over 3,100 MB/s sequential read performance
  • Boost Performance With SSD Cache
    Built-in M.2 2280 NVMe SSD slots permit cache acceleration without using storage drive bays
  • Flexibly Expand Storage Size
    Flexibly scale up to 16 drives2 to increase storage capacity as demand grows
  • Collaboration and Productivity Suite
    Build an on-premises, multi-user collaboration environment with fine-grained controls
  • Protect and Restore Data in a Snap
    Back up critical data and reduce your Recovery Time Objective (RTO) with Snapshot Replication
  • Leverage Native Virtualization Tools
    Use virtualization storage tools to complete your SAN or run virtual machines on a full-featured hypervisor
  • Fully Back Up Business Assets
    Back up company data from PCs, public cloud, company servers, and virtual machines

CPU

Intel Xeon D-1527 4-core 2.2 GHz

Memory

8 GB DDR4 ECC SODIMM, up to 32 GB

High Performance

Over 3,100 MB/s sequential read

Scalability

Up to 16 drives with DX517

Features:

Supercharge your storage with speedy performance

DS1621xs+ comes with built-in M.2 SSD cache slots capable of providing I/O response speeds 20 times faster than hard drives without occupying front drive bays. The built-in 10GbE port provides fast data transmission and can be bonded with an additional network interface card for higher network bandwidth.


M.2 SSD support
Dual M.2 2280 SSD supporting NVMe SSDs

10GbE support
Built-in 10GBASE-T for bandwidth intensive environments


5-year warranty

At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.


Ultimate Backup Solution

DS1621xs+ 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

Active Backup for Business

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

Hyper Backup

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.

Drive Package

Drive Package

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

Active Backup for Office 365 / G Suite

Active Backup for Office 365 / G Suite

Protect corporate data stored on the cloud. On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.


Real-time collaboration on your private cloud

Synology Office is a collaboration package combining the convenience and usability of the public cloud with private cloud privacy and security. It enables seamless collaboration on documents and spreadsheets in a protected environment.


Virtual Machine Manager

Sandbox new software , manage resources using a single interface, and increase deployment flexibility with Synology Virtual Machine Manager. Run Windows, Linux, and Virtual DSM instances on your Synology NAS in just a few steps.

  • Snapshots for virtual machines
    Clone and restore complete virtual machines within seconds.
  • Live migration
    Seamlessly migrate virtual machines from one Synology NAS to another.
  • Multi-tenant environment
    Create multiple isolated virtual machines for business units or departments.

Powered by Synology DiskStation Manager

Central Management System

Central Management System

Conveniently manage your fleet of Synology NAS from a centralized console.

Synology MailPlus

Synology MailPlus

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

High Availability

Synology High Availability

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

Snapshot Replication

Synology Drive

Instantly access your NAS files across multiple devices whenever you want, wherever you are.

Surveillance Station

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Security

Security

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


Specifications:

  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 3.0 port
  9. System fan
  10. Power port
  11. Kensington Security Slot
  12. 10GbE RJ-45 port
  13. 1GbE RJ-45 port
  14. Reset button
  15. Expansion port
  16. PCIe expansion slot
DiskStation DS1621xs+ Hardware Specifications:
Hardware Specifications
CPU Intel Xeon D-1527 4-core 2.2GHz, Turbo Boost up to 2.7GHz
Hardware encryption engine Yes (AES-NI)
Memory 8 GB DDR4 ECC SODIMM (expandable up to 32 GB)
Compatible drive type
  • 6 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
  • 2 x M.2 2280 NVMe SSD (drives not included)
Hot swappable drive Yes
External port
  • 3 x USB 3.0 port
  • 2 x eSATA port
Size (Height x Width x Depth) 166 x 282 x 243 mm
Weight 5.3 kg
LAN port
  • 2 x 1GbE RJ-45
  • 1 x 10GbE RJ-45
Wake on LAN/WAN Yes
PCIe 3.0 slot
  • 1 x 8-lane x8 slot
  • High-performance network interface card support
Scheduled power on/of Yes
System fan 2 (92 x 92 x 25 mm)
AC input power voltage 100 V to 240 V AC
Power Frequency 50 to 60Hz, single phase
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
Maximum operating altitude 5,000 m (16,400 ft)
General DSM specification
Networking protocol SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP)
File system
  • Internal: Btrfs, ext4
  • External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT
Supported RAID type Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID F1
Storage management
  • Maximum single volume size: 108TB/200TB (at least 32 GB RAM required, for RAID 5 or RAID 6 groups only)
  • Maximum system snapshots: 65,536
  • Maximum internal volume: 256
SSD cache
  • Read/write cache support
  • M.2 NVMe SSD support
File sharing capability
  • Maximum local user account: 16,000
  • Maximum local group: 512
  • Maximum shared folder: 512
  • Maximum concurrent SMB/NFS/AFP/FTP connection: 2,000
Privilege Windows Access Control List (ACL), application privileges
Directory service Windows AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration
Virtualization VMware vSphere 6.5, Microsoft Hyper-V, Citrix, OpenStack
Security Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS (customizable cipher suite)
Supported client Windows 7 onwards, macOS 10.12 onwards
Supported browser Chrome, Firefox, Internet Explorer 11 onwards, Safari 11 onwards; Safari (iOS 11 onwards), Chrome (Android™ 6.0 onwards)
File Server & Synchronization
Drive Provide a universal portal to synchronize your files across various platforms, including Windows, macOS, Linux, Android™ and iOS. The built-in universal portal allows you to access data anytime and anywhere.
  • Maximum number of hosted files: 3,000,000
  • Maximum number of concurrent connections for PC clients: 900
File Station Virtual drives, remote folders, Windows ACL editor, compressing/extracting archived files, bandwidth control for specific users/groups, creating sharing links, transfer logs
FTP Server Bandwidth control for TCP connections, custom FTP passive port range, anonymous FTP, FTP SSL/TLS and SFTP protocol, boot over the network with TFTP and PXE support, transfer logs
Presto File Server High-speed data transfer over WAN with exclusive SITA technology between Synology NAS and desktop
Cloud Sync One or two-way synchronization with public cloud storage providers including Alibaba Cloud OSS, Amazon S3-compatible storage, Backblaze B2, Baidu Cloud, Box, Dropbox, Google Cloud Storage, Google Drive, hubiC, MegaDisk, Microsoft OneDrive, OpenStack Swift-compatible storage, Tencent COS, WebDAV servers, Yandex Disk
Universal Search Offer global search into applications and files
File Server & Synchronization
iSCSI Manager
  • Maximum iSCSI target: 256
  • Maximum iSCSI LUN: 512
  • iSCSI LUN clone/snapshot support
Virtual Machine Manager Deploy and run various virtual machines on Synology NAS, including Windows®, Linux®, or Virtual DSM
Data Protection & Backup Solution
Hyper Backup Support local backup, network backup, and data backup to public clouds
Backup tools
  • DSM configuration backup, macOS® Time Machine® support, Synology Drive Client desktop application
  • Shared folder sync - maximum task number: 32
Snapshot Replication
  • Maximum of shared folder snapshots: 1,024
  • Maximum of replication: 64
Synology High Availability Reduce service downtime by setting up two identical NAS into one high-availability cluster
Active Backup for G Suite Support G Suite My Drive and Team Drive backup and restoration
Active Backup for Microsoft 365 Supports Microsoft 365 OneDrive for Business, mail, contacts, and calendar backup and restoration
Active Backup for Business All-in-one backup solution designed for heterogeneous business IT environment, enabling IT admins to remotely manage and monitor protection over PC, servers and VM on one centralized console
Productivity & Collaboration
Collaboration tools Collaborate with instant message service Synology Chat, online editor Synology Office, and scheduling assistant Synology Calendar
  • • Chat maximum user: 4,000
  • Office maximum user: 2,900
  • Calendar: support CalDAV and access via mobile devices
Note Station Rich-text note organization and versioning, encryption, sharing, media embedding and attachments
Synology MailPlus Server Secure, reliable, and private mail solution with high-availability, load balancing, security and filtering design (includes 5 free email account licenses; additional accounts require the purchasing of additional licenses)
Synology MailPlus Intuitive webmail interface for Synology MailPlus Server, customizable mail labels, filters, and user interface
Multimedia
Moments Support smart AI album with facial and subject recognition, photo editing and sharing features, similar photo detection, autoediting functions such as color correction and angle adjustments, and AI selection of the best photos. Mobile applications are available on iOS and Android™ devices
Other packages Video Station, Photo Station, Audio Station, iTunes Server
Surveillance
Surveillance Station Maximum IP camera: 40 (total of 1,200 FPS at 720p, H.264) (Including two free camera licenses. Additional cameras require the purchasing of additional licenses)
All-in-One Server
Synology Directory Server Provide a flexible and cost-effective domain controller solution
Central Management System Provide a single interface to manage and monitor multiple Synology NAS
VPN Server Maximum connection: 40. Supported VPN protocol: PPTP, OpenVPN™, L2TP/IPSec
Mail Server Supported Mail Server protocol: POP3, SMTP, IMAP. LDAP/AD account support
Mail Station Webmail interface for Mail Server to receive emails from multiple POP3 mailboxes, customizable SMTP server
Web Station Virtual host (up to 30 websites), PHP/MariaDB®, 3rd-party applications support
Other packages DNS Server, RADIUS Server, Log Center
Others
Storage Analyzer Volume and quota usage, total size of files, volume usage and trends based on past usage, size of shared folders, large files, most recently modified files, least recently accessed files
Antivirus Essential Full system scan, scheduled scan, white list customization, virus definition auto update
iOS/Android™ applications Synology Drive, Synology MailPlus, Synology Chat, Synology LiveCam, Moments, DS audio, DS photo, DS video, DS cam, DS file, DS finder, DS note
Other packages Additional 3rd-party packages available on Package Center
Certifications and Packaging
Environment safety RoHS compliant
Package content
  • 1 x DS1621xs+ main unit
  • 1 x Quick Installation Guide
  • 1 x Accessory pack
  • 1 x AC power cord
  • 2 x RJ-45 LAN cable
Optional accessories
  • DDR4 ECC SODIMM: D4ES01-8G/D4ECSO-2666-16G
  • 10GbE Network Interface Card: E10G18-T2/E10G18-T1/E10G17-F2
  • 2.5" SATA SSD: SAT5200
  • M.2 2280 NVMe SSD: SNV3400
  • Expansion Unit: DX517
  • VisualStation: VS960HD/VS360HD
  • Surveillance Device License Pack
  • MailPlus License Pack
  • Virtual DSM License Pack
Warranty 3 Years

Documentation:

Download the Synology DiskStation DS1621xs+ Datasheet  (PDF).

Pricing Notes:

Synology Products
Synology DiskStation
Synology DiskStation DS1621xs+ 6 Bay On-Premise Cloud NAS Storage System
#DS1621xs+
Our Price: $1,599.99
Synology Recommended Bundles - Exos Bundles
48TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos 7E8 HDD 512E/4kn SATA Hard Drive (QTY 6x8TB) 48TB Capacity
#DS-Exos-103
Our Price: $3,161.00
60TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X10 HDD 512E SATA Hard Drive (QTY 6x10TB) 60TB Capacity
#DS-Exos-104
Our Price: $3,684.00
72TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X14 HDD 512E/4KN SATA Hard Drive (QTY 6x12TB) 72TB Capacity
#DS-Exos-105
Our Price: $3,684.00
84TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X16 HDD 512E/4KN SATA Hard Drive (QTY 6x14TB) 84TB Capacity
#DS-Exos-106
Our Price: $4,075.00
96TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Exos X16 HDD 512E SATA SED Hard Drive (QTY 6x16TB) 96TB Capacity
#DS-Exos-107
Our Price: $4,195.00
Synology Recommended Bundles - Ironwolf Bundles
24TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x4TB) 24TB Capacity
#DS-Ironwolf-87
Our Price: $2,462.00
36TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x6TB) 36TB Capacity
#DS-Ironwolf-88
Our Price: $2,759.00
48TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x8TB) 48TB Capacity
#DS-Ironwolf-89
Our Price: $3,152.00
60TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x10TB) 60TB Capacity
#DS-Ironwolf-90
Our Price: $3,504.00
72TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x12TB) 72TB Capacity
#DS-Ironwolf-91
Our Price: $3,752.00
84TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x14TB) 84TB Capacity
#DS-Ironwolf-92
Our Price: $4,249.00
96TB Bundle
Synology DiskStation DS1621xs+ (6 bay) with Ironwolf HDD 512/4KN SATA Hard Drive (QTY 6x16TB) 96TB Capacity
#DS-Ironwolf-93
Our Price: $4,498.00