Synology DiskStation DS1821+

The Synology DiskStation DS1821+ is a high-performance 8-bay Network Attached Storage (NAS) solution designed for small and medium-sized businesses, creative professionals, surveillance applications, and power users who require scalable storage, advanced data protection, and reliable performance. Powered by an AMD Ryzen™ V1500B quad-core processor and equipped with ECC memory, the DS1821+ delivers exceptional speed, security, and flexibility for file sharing, backup, virtualization, and private cloud deployments. It is designed to handle growing data demands while maintaining excellent reliability and scalability.

Powerful Performance for Demanding Workloads

At the heart of the DS1821+ is an AMD Ryzen V1500B quad-core 2.2GHz processor with hardware encryption support, providing the processing power needed for business-critical applications, large file transfers, virtualization environments, and multi-user collaboration. The system delivers over 110,000 4K random read IOPS and sequential write speeds exceeding 2,300 MB/s when properly configured, ensuring smooth performance even under heavy workloads.

Processor Features

• AMD Ryzen V1500B Processor
• Quad-Core Architecture
• 2.2 GHz Operating Frequency
• 64-bit Processing
• AES-NI Hardware Encryption
• Optimized for Business Applications

Flexible 8-Bay Storage Platform

The DS1821+ features eight hot-swappable drive bays, supporting both 3.5-inch SATA hard drives and 2.5-inch SATA HDDs/SSDs. This flexibility allows users to create high-capacity storage pools tailored to business, surveillance, or multimedia requirements.

Storage Highlights

• 8 Drive Bays
• Hot-Swappable Design
• Supports HDD and SSD Storage
• Synology Hybrid RAID (SHR)
• RAID 0, 1, 5, 6, and 10
• Online Capacity Expansion
• Storage Pool Management

The system can be expanded with two Synology DX517 expansion units, increasing the total capacity to 18 drive bays, making it ideal for organizations expecting future storage growth.

ECC Memory for Maximum Reliability

The DS1821+ comes with 4GB DDR4 ECC memory, which helps detect and correct memory errors before they can affect stored data. ECC memory is especially important in environments where data integrity and system uptime are critical.

Memory Features

• 4GB DDR4 ECC RAM Included
• Expandable to 32GB
• Enhanced Data Integrity
• Improved System Stability
• Ideal for Virtualization and Multi-User Workloads

ECC technology provides an extra layer of protection against memory corruption and unexpected system issues.

NVMe SSD Cache Acceleration

The DS1821+ includes dual built-in M.2 NVMe SSD slots, allowing users to add SSD cache without occupying any of the main drive bays. This dramatically improves access speeds for frequently used files and applications.

Benefits of SSD Cache

• Faster File Access
• Improved Database Performance
• Reduced Storage Latency
• Better Multi-User Experience
• Increased Virtual Machine Responsiveness

By combining HDD storage with NVMe SSD caching, users can achieve enterprise-level performance while maintaining cost-effective storage capacity.

Advanced Networking and Expansion

The DS1821+ is equipped with four Gigabit Ethernet ports, supporting Link Aggregation and Failover for improved throughput and network redundancy.

Connectivity Features

• 4 × 1GbE LAN Ports
• Link Aggregation Support
• Failover Protection
• Wake-on-LAN/WAN
• 4 × USB 3.2 Gen 1 Ports
• 2 × eSATA Expansion Ports

For organizations requiring faster networking, the built-in PCIe Gen3 expansion slot supports optional 10GbE and 25GbE network interface cards, enabling significantly higher bandwidth for demanding applications.

Comprehensive Data Protection

Data protection is one of the DS1821+’s strongest features. Running on Synology’s DiskStation Manager (DSM), the NAS includes a complete suite of backup and recovery tools designed to safeguard critical business data.

Protection Features

• Active Backup Suite
• Hyper Backup
• Snapshot Replication
• Shared Folder Snapshots
• Version Control
• Disaster Recovery Tools
• Cloud Backup Integration
• Encrypted Data Storage

These features help protect against accidental deletion, hardware failure, ransomware attacks, and other data loss scenarios.

Btrfs File System for Data Integrity

The DS1821+ supports the advanced Btrfs file system, which offers enhanced protection against file corruption and provides efficient storage management.

Btrfs Advantages

• Self-Healing Data Protection
• Metadata Integrity Verification
• File Versioning
• Snapshot Technology
• Rapid Recovery Options
• Protection Against Silent Data Corruption

This makes the DS1821+ particularly suitable for storing mission-critical business information.

Virtualization Ready

The DS1821+ is an excellent storage platform for virtualization environments. Its powerful processor, ECC memory, SSD caching, and expansion capabilities make it ideal for hosting virtual machines and containerized applications.

Supported Platforms

• VMware vSphere
• Microsoft Hyper-V
• Citrix Hypervisor
• Docker Containers
• Synology Virtual Machine Manager

Organizations can consolidate workloads while maintaining high performance and reliability.

Private Cloud and Collaboration Solution

Using Synology DSM, the DS1821+ can function as a complete private cloud platform. Users can securely access, synchronize, and share files across multiple devices and locations.

Productivity Applications

• Synology Drive
• Synology Office
• Synology Chat
• Synology MailPlus
• Cloud Sync
• File Station
• Active Backup for Business

These tools enable teams to collaborate efficiently while maintaining full control over company data.

Surveillance Storage Platform

The DS1821+ can also serve as a centralized surveillance storage server using Synology Surveillance Station. Its large storage capacity and scalability make it suitable for:

• Corporate Offices
• Retail Stores
• Warehouses
• Educational Institutions
• Hotels
• Industrial Facilities
• Residential Estates

Users can manage multiple IP cameras, store video recordings, and access surveillance footage from anywhere.

Quiet and Efficient Operation

Despite its powerful hardware, the DS1821+ maintains quiet operation with dual cooling fans and an energy-efficient design. Its low-noise desktop form factor makes it suitable for office and professional environments where noise levels matter.

Technical Specifications

Why Choose the Synology DS1821+?

The Synology DiskStation DS1821+ combines enterprise-grade performance, extensive storage scalability, ECC memory protection, NVMe SSD caching, and powerful data management tools in a compact desktop NAS solution. With support for expansion up to 18 drive bays, optional 10GbE/25GbE networking, advanced backup solutions, virtualization support, and private cloud capabilities, it is an ideal storage platform for growing businesses, surveillance deployments, creative professionals, and organizations that require secure, scalable, and high-performance storage infrastructure