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€ 1150,–
€ 950,41 ex. 21% VAT

Synology DS1821+

in stock (25+ units) | order before 18:00 = shipped today
  • AMD RyzenTM V1500B quad-core 2.2 GHz
  • Powerful 8-bay Enterprise NAS
  • Built for both SOHO and SMB environments
  • With over 110K or 177% higher performance, 4K random read IOPS
When ordering NAS + HDD's you get free assembly!

Product Description DS1821+

Click here for an overview of all compatible harddrives.

Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect missioncritical data. Designed to tackle increasing amounts of unstructured data, the low-noise, desktop form-factor of the DS1821+ is built for both SOHO and SMB environments. With performance over 110K or 177% higher, 4K random read IOPS than its predecessor, the DS1821+ is fast, with ample room for scalability

Versatile Storage Powerhouse in a Single Solution 

Synology DS1821+ is designed for multi-purpose use, suitable for a wide range of usage environments. The compact 14L desktop form-factor makes it easy to store away whether it is at home or in a quiet office environment. 

Up to 110,000 4K random read IOPS and 2300 MB/s sequential write speeds1 for demanding workloads 

Dual M.2 2280 slots for NVMe SSD lets you maximize performance and capacity efficiently3 

Features 8 bays, supporting both SATA HDD/SSD 2.5" and 3.5" drives and can be expanded by using two Synology DX517 expansion units for a total capacity of 18 bays 

Powered by Synology DSM, our unified data management operating system

Robust Data Protection with Btrfs 

DS1821+ uses the Btrfs file system optimized by Synology to offer both high reliability and high performance. Btrfs supports advanced storage technologies that meet the needs of modern business: 

Advanced snapshot technology provides schedulable and near-instantaneous data protection of shared folders and LUNs 

File and folder level data restoration offers users who wish to restore only a specific file or folder more flexibility 

Flexible Shared Folders and user quota system provides comprehensive quota control on all user accounts and shared folders 

File self-healing allows Btrfs file systems to auto-detect corrupted files using mirrored metadata and to recover broken data using RAID configurations 

Inline compression compresses data before writing it to the drive, to optimize storage use and reduce write commands to the drives

On-Premises Collaboration 

Synology Collaboration Suite allows businesses to host their own fundamental IT services for file sharing, concurrent document editing, emails, instant messaging, and more. Create a multi-user collaborative environment while leveraging private cloud infrastructure to reduce privacy concerns. Multi-layered security enables secure access to files and services, even for a distributed or remote workforce across Windows, macOS, Linux, Android™, and iOS platforms.

Synology Drive enables data access, synchronization, and backup via web portal and desktop applications across Windows, macOS, and Linux platforms. Intelliversioning saves historical versions while minimizing storage space usage and supports on-demand data restoration. 

Synology Office includes Documents, Spreadsheets, and Slides. The online collaborative editing environment allows multiple users to edit, comment, and share data together. 

Synology MailPlus6 enables you to setup a secure, reliable, and private email server, with an intuitive web-based client to boost productivity 

Synology Chat enables instant conversations and optimizes team communications with powerful features including message encryption, pinning, forwarding, reminders, and scheduling. 

Synology Calendar helps teams keep track of what's important, with easy to use sharing and scheduling functionality, keeping everyone on the same page.

Running & Protecting Virtual Machines 

Synology Virtual Machine Manager (VMM)is a hosted hypervisor that lets users easily set up virtual machines running Windows or Linux based platforms and a virtualized version of Synology DSM, Virtual DSM, on the DS1821+. Using VMM, users can build up a cluster environment with multiple Synology systems for flexibility to perform online migration based on load balancing and resource allocation requirements. High performance snapshots, replication, cloning, and recovery mechanisms enable comprehensive management and data protection on each VM7. DSM also simplifies the provisioning and management of storage for virtual machines. Certified for VMware vSphere, Microsoft Hyper-V, Citrix XenServer, and OpenStack, Synology systems can integrate with your virtualization platform of choice through iSCSI or NFS protocols. Install Synology Storage Console for VMware/Windows for additional management convenience and functionality right in the hypervisor.

Comprehensive Data Protection Options 

DS1821+ includes a range of backup solutions to protect local, remote, and cloud-based deployment environments, all-inclusive with the device. Easily set up automated backups and even enable self-serve functionality for reduced maintenance and upkeep. 

Back up data on Synology NAS: Snapshot Replication enables lightning-fast snapshots for point-in-time file versioning, great for rolling back unintended file modifications and protecting your data against ransomware attacks. Hyper Backup offers a wide range of destinations for backups of your NAS, including for both local and remote on-premises and cloud storage providers. 

Back up business infrastructure: Synology Active Backup suite is a collection of powerful backup solutions built to protect Windows PCs and servers, VMware and Hyper-V VMs, other file servers, and even Google G Suite and Microsoft 365 SaaS clouds.

Private Video Surveillance 

With Synology Surveillance Station, DS1821+ becomes a powerful VMS solution. With support for up to 40 IP cameras, you can easily cover large installations. 

7,600 supported cameras, and counting: Find a compatible camera from our constantly updated compatibility lists to match your video requirements and budget. ONVIF support prevents vendor lock-in. 

Private and subscription-free: Unlike cloud-based cameras, you can keep your recordings private and on-premises. Simple per-camera licensing with no subscriptions needed to access your data. 

Flexible monitoring & control: Access your surveillance system from a web browser, dedicated desktop clients, or from the DS cam mobile app. Internet-optional. 

Automation & notification: Set up rules to trigger specific actions when an event occur, such as automatically taking a picture when motion detection is triggered. Get notified by email, SMS, or push notification so that you can act quickly

For more information, please visit this products webpage.


  • Synology DS1821+ with 8 x 4TB WD RED Pro NAS HDD
    in stock | € 2278,01
    € 1882,65 ex. 21% VAT
  • Synology DS1821+ met 4 Seagate Ironwolf
    in stock | You save € 60,00! € 2338,00
    € 1932,23 ex. 21% VAT
  • Synology DS1821+ with 8 x 6TB Seagate IronWolf NAS HDD
    not in stock | € 2589,20
    € 2139,83 ex. 21% VAT
  • Synology DS1821+ with 8 x 8TB Seagate IronWolf NAS HDD
    in stock | € 2950,00
    € 2438,02 ex. 21% VAT
  • Synology DS1821+ with 8 x 10TB WD RED Pro NAS HDD
    ordered on demand | € 3845,97
    € 3178,49 ex. 21% VAT


Type Tower
CPU AMD RyzenTM V1500B quad-core 2.2 GHz
RAM 4 GB DDR4 ECC SODIMM (expandable up to 32 GB)
Nr. of HDD slots 8 slots
Harddisk interface 2,5'' SATA II, 2,5'' SATA III, 3,5'' SATA II, 3,5'' SATA III, 2,5'' SSD, M.2 SSD
RAID Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, Hybride RAID
External interface 4 x USB 3.2, 2x eSATA
LAN 4 x 1 Gigabit
Encryption Hardware based
Link aggregation Yes
Redundant power supply No
Wireless No
Warranty 3 year
EAN Code 4711174723973

Did you notice a wrong specification? Please let us know.

CPU AMD RyzenTM V1500B quad-core 2.2 GHz
Hardware encryption engine Yes (AES-NI)
Memory 4 GB DDR4 ECC SODIMM (expandable up to 32 GB)
Compatible drive type 8 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
2 x M.2 2280 NVMe SSD (drives not included)
Hot swappable drive Yes
External port 4 x USB 3.2 Gen 1
2 x eSATA
Size (HxWxD) 166 x 343 x 243 mm
Weight 6.0 kg
LAN port 4 x 1GbE RJ-45
Wake on LAN/WAN Yes
PCIe 3.0 slot 1 x 4-lane x8 slot
Supports 10GbE network interface cards
Scheduled power on/off Yes
System fan 2 (120 x 120 x 25 mm)
AC input power voltage 100 V to 240 V AC
Power frequency 50/60 Hz, single phase
Operating temperature 0C to 40C
Storage temperature -20C to 60C
Relative humidity 5% to 95% RH
Maximum operating altitude 5,000 m (16,400 ft)
General DSM specification
Networking protocol SMB, AFP, NFS, FTP, WebDAV, CalDAV, iSCSI, Telnet, SSH, SNMP, VPN (PPTP, OpenVPN, L2TP)
File system Internal: Btrfs, ext4
External: Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT10
Supported RAID type Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Storage management Maximum single volume size: 108TB
Maximum system snapshots: 65,53611
Maximum internal volume: 64
SSD cache Read/write cache support
M.2 NVMe SSD support
File sharing capability Maximum local user account: 2,048
Maximum local group: 256
Maximum shared folder: 512
Maximum concurrent SMB/NFS/AFP/FTP connection: 1,000
Privilege Windows Access Control List (ACL), application privileges
Directory service Windows AD integration: Domain users login via SMB/NFS/AFP/FTP/File Station, LDAP integration
Virtualization VMware vSphere 6.5, Microsoft Hyper-V, Citrix, OpenStack
Security Firewall, shared folder encryption, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS (customizable cipher suite)
Supported client Windows 7 onwards, macOS 10.12 onwards
Supported browser Chrome, Firefox, Edge, Internet Explorer 10 onwards, Safari 10 onwards, Safari (iOS 10 onwards), Chrome (Android 6.0onwards) on tablets
Interface language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svensk, Nederlands, ???????, Polski, Magyar,Português do Brasil, Português Europeu, Türkçe,

Did you notice a wrong specification? Please let us know.