8-Bay Diskstation (up to 18-bay), Quad Core 2.2GHz, 4GB RAM (up to 32GB), 10GbE NIC support (optional)
High capacity storage and data protection for anyone
Designed for scalability and performance
The 8-bay Synology DS1821+ is aimed at IT enthusiast and SMB customers looking for a powerful and scalable storage solution, its business-grade backup solutions keep users safe and protected from potential data loss, while major improvements to compute capabilities and throughput means workloads are finished faster than ever before.
- CPU AMD Ryzen™ Quad-core 2.2 GHz
- Cache Acceleration Dual M.2 2280 slots for NVMe Cache
- Performance 113K 4K random read IOPS¹
- Scalability Expand up to 18 drives with two DX517 expansion unit
A powerhouse on all fronts
The DS1821+ can handle demanding application workloads and a greater number of concurrent users. Experience faster file indexing in Synology Drive, photo organization in Moments, and more responsive web services.¹
Synology Drive - 47.01% faster in file indexing
- Moments - 49.13% faster in photo indexing
- Web Server - 175% faster in PHP indexing
- Transfer Performance - 177% faster random IOPS
Turbocharge and expand it
networking or for higher storage capacity.
2 x M.2 NVMe
Enable ultra-fast NVMe cache to accelerate HDD arrays by 20X or more
Add in faster SFP+ or RJ-45 networking to turbocharge existing workflows
Supports two DX517 expansion units for a total of 18 bays
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, DS620slim 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. Learn more
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. Learn more
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery. Learn more
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.
Microsoft 365 | G Suite
¹ Performance figures are achieved in the Synology lab with optimized network and configuration settings. Actual performance could vary in different environments. Comparison done against prior-generation 6-bay DS1618+. For full details on the test setup, please visit the Synology performance page here.