DiskStation DS1621+

High-performance and 6-bay NAS ideal for tackling multi-tasking challenges

Powerful and diverse, and can be easily expanded

Synology DS1621+ is a powerful but compact desktop NAS with 6 hard drive bays, designed for storing and protecting important data. Nowadays, there is more and more unstructured data to be processed, which must be stored, accessed and collaborated in a smarter and more efficient way. The expandable performance of DS1621+ allows you to start small and expand the storage space as the amount of data grows.


Quad-Core 2.2GHz

AMD Ryzen

Cache acceleration

Dual M.2 2280 SSD slots, support NVMe cache

High Performance

4K random read can reach 110,000 IOPS, which is 174% higher than the previous model


With two DX517 can be expanded to 16 hard drives

Improved performance

DS1621+ has high-speed processing performance in all aspects. You can use Synology Drive to improve your work efficiency, and you can also use Synology Moments to make photo management faster and smoother.

Perfect file management and sharing functions

File Station is a very easy-to-use web management tool. The operation method is intuitive, and it can be operated only by dragging and dropping. There is no need for complicated installation on Mac or PC. Its advanced search and filtering tools allow you to easily organize and share data. DS1621+ supports the following communication protocols: AFP, FTP, iSCSI, NFS, SMB or WebDAV.

Fully certified virtualization solution

Synology’s iSCSI storage solution fully supports mainstream virtualization operating environments and improves work efficiency through an easy-to-use management interface. The integration of VMware vSphere 6 and VAAI can offload specific storage operations and optimize computing performance. Windows Offloaded Data Transfer (ODX) greatly improves the efficiency of data transfer and transfer. The support of OpenStack Cinder can also configure your Synology NAS as a block-segmented storage device.

Ultimate Backup Solution

DS1618+ integrates various backup applications to safeguard your important data on any device with an intuitive user interface and durable storage technologies.

Active Backup for Business

Centrally manage backup tasks for VMware, Windows and file servers. When necessary, restore the services you need quickly and reliably.

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.

Desktop Backup

Safeguard your PC with Cloud Station Backup. Effortlessly back up data stored on macOS to Synology NAS with Time Machine.

Active Backup for Office 365 / G Suite

Protect corporate data stored in the cloud. Manage local backup solutions with a centralized panel. Optimize storage performance with single-instance storage and block-level data deduplication technology.

Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders

Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots

File or folder level data restoration makes data recovery fast and flexible

Automatic file self-healing detects and recovers corrupted files without user intervention

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.



Award-winning operating system with an intuitive user interface and powerful capabilities.

Public Cloud Integration

Backup and synchronize data easily between your public cloud accounts and your NAS.

Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

Cloud Station Suite

Synchronize cross-platform data automatically with file version control on all your devices.

Snapshot Replication

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


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

Data Sheet: DS1621+