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Synology DiskStation DS1821+

Designed for scalability and performance

An 8-bay network-attached-storage solution aimed at IT enthusiast and SMB customers, the Synology DS1821+ offers business-grade backup to keep users safe and protected from potential data loss. Major improvements to compute capabilities and throughput means workloads are finished faster than ever before, while scalable storage expansion and optional M.2 SSD caching allow you to take performance up a notch.

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CPU

AMD Ryzen Quad-core 2.2 GHz

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Cache Acceleration

Dual M.2 2280 slots for NVMe Cache

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Performance

113K 4K random read IOPS1

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Scalability

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

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Synology Drive

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Moments

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Web Server

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Transfer Performance

Turbocharge and supersize it

Upgrade your DS1821+ to match your data requirements, whether it is for faster networking or for higher storage capacity.

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2 x M.2 NVMe

Enable ultra-fast NVMe cache to accelerate HDD arrays by 20X or more

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10GbE support

Add in faster SFP+ or RJ-45 networking to turbocharge existing workflows

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Storage Expansion

Supports two DX517 expansion units for a total of 18 bays

* HDD/SSDs, 10GbE network adapter cards, and expansion units are sold separately.

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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.

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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

DS1821+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

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Active Backup for Business

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

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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.

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Synology Drive

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

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Active Backup for Microsoft 365 / Google Workspace

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

Powered by Synology DiskStation Manager

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Central Management System

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

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Synology MailPlus

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

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Synology High Availability

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

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Security

Secure data with comprehensive built-in security tools to protect your devices against evolving threats.

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Synology Drive

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

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Surveillance Station

Complete surveillance solution for recording, monitoring, and management.

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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 Power port

10 System fan

11 PCIe expansion slot

12 Kensington Security Slot

13 Expansion port

14 1GbE RJ-45 port

15 Reset button

16 USB 3.2 Gen 1 port

Note: 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 8-bay DS1819+.