DiskStation DS1821+ 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.
Quad-core 2.2 GHz
Dual M.2 2280 slots for NVMe Cache
113K 4K random read IOPS1
Expand up to 18 drives
with two DX517 expansion units
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
10GbE supportAdd in faster SFP+ or RJ-45 networking to turbocharge existing workflows
Storage ExpansionSupports two DX517 expansion units for a total of 18 bays
HDD/SSDs, 10GbE network adapter cards, and expansion units are sold separately.
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, DS1821+ supports the following protocols: AFP, FTP, iSCSI, NFS, SMB, and WebDAV.
Ultimate Backup Solution
Active Backup for Business
Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.
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.
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.
Engineered for reliability, backed by Synology
DS1821+ is designed to reliably store your data and is backed by Synology's three-year hardware warranty. An optional two-year extended warranty is available in select regions for up to five years of coverage. Learn more
Powered by Synology DiskStation Manager
Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.Learn more
Secure, reliable, and private mail server solution with an intuitive and modern mail client.Learn more
Synology High Availability
Seamless transition between clustered servers in the event of a server failure to minimize the impact on applications.Learn more
Shield your Synology NAS from the most sophisticated threats with industry-leading security solutions.Learn more
Instantly access your NAS files across multiple devices whenever you want, wherever you are.Learn more
Protect your home or business with intelligent monitoring and video management tools.Learn more
- 1Status indicator
- 2Alert indicator
- 3Power button and indicator
- 4LAN indicator
- 5Drive status indicator
- 6Drive tray
- 7Drive tray lock
- 8USB 3.2 Gen 1 port
- 9Power port
- 10System fan
- 11PCIe expansion slot
- 12Kensington Security Slot
- 13Expansion port
- 141GbE RJ-45 port
- 15Reset button
- 16USB 3.2 Gen 1 port
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