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.
Storage that fits your needs
Make the most of high-performance networking and file access without taking up unnecessary space. DS1821+ comes equipped with 8 bays and can scale up to 18 bays with 2 DX517 expansion units as your data needs grow.
The performance you need
Reduce transfer times with the DS1821+, designed to accelerate your workloads. Easily add faster networking and NVMe drives to further boost performance.
| Product Description | Synology Disk Station DS1821+ - NAS server |
| Device Type | NAS server |
| Host Connectivity | Gigabit Ethernet |
| Installed Devices / Modules Qty | 0 (installed) / 8 (max) |
| Dimensions (WxDxH) | 34.3 cm x 24.3 cm x 16.6 cm |
| Weight | 6 kg () |
| Processor | AMD Ryzen Embedded V1500B 2.2 GHz (Quad-Core) |
| Storage Controller | RAID SATA 6Gb/s RAID 0, 1, 5, 6, 10, JBOD |
| Networking | 10Mb LAN, 100Mb LAN, 1GbE |
| RAM | 4 GB |
| Power | AC 120/230 V (50/60 Hz) |
| Storage Operating System | Synology DiskStation Manager |
| System Requirements | Microsoft Windows 7 or later, Apple MacOS X 10.11 or later |
| Manufacturer Warranty | 3-year warranty |
General | |
| Device Type | NAS server |
| Host Connectivity | Gigabit Ethernet |
| Total Storage Capacity | 0 GB |
| Installed Devices / Modules Qty | 0 (installed) / 8 (max) |
| Width | 34.3 cm |
| Depth | 24.3 cm |
| Height | 16.6 cm |
| Weight | 6 kg () |
Processor / Memory | |
| Processors Installed | AMD Ryzen Embedded V1500B 2.2 GHz |
| Number of Cores | Quad-Core |
| Max Supported Qty | 1 |
| RAM | 4 GB (installed) / 32 GB (supported) - DDR4 |
Storage Controller | |
| Type | RAID |
| Interface Type | SATA 6Gb/s |
| RAID Level | RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD |
Networking | |
| Data Link Protocol | 10Mb LAN, 100Mb LAN, 1GbE |
| Network / Transport Protocol | TCP/IP, PPTP, L2TP, iSCSI, FTP |
| Remote Management Protocol | SNMP, Telnet, SSH |
| Network Services Compatibility | Microsoft Active Directory (AD), File Level Security (ACLs), Microsoft CIFS, Network File System (NFS), FTP, Apple File Protocol (AFP), HTTPS, Web-based Distributed Authoring and Versioning (WebDAV), Calendaring Extensions to WebDAV (CalDAV) |
| Features | Firewall protection, hardware encryption, VPN support, LDAP support, wake on LAN (WOL), Syslog support, E-mail alert, High Availability, video server, web server, backup server, file sharing, anti-malware protection, Trivial File Transfer Protocol (TFTP) support, Access Control List (ACL) support, SSH support, iTunes server, Samba support, FTP server, surveillance station, PXE support, Apple Time Machine compatible, cloud backup, VPN Server, SFTP client, anti-virus protection, DLNA support |
| Encryption Algorithm | AES-NI |
| Compliant Standards | DLNA CERTIFIED |
Expansion / Connectivity | |
| Expansion Bays | 8 (total) / 8 (free) x hot-swap - 2.5" / 3.5" |
| Expansion Slots | 1 x PCI Express 3.0 x8 , 2 (total) / 2 (free) x M.2 2280 |
| Interfaces | 4 x USB 3.2 Gen 1 - Type A , 4 x Ethernet 1000Base-T - RJ-45 , 2 x eSATA |
Miscellaneous | |
| Cables Included | 2 x network cable |
| Features | Security lock slot (cable lock sold separately), wake on LAN, built-in 2 cooling fans, hardware encryption |
| Security Slot Type | Kensington security slot |
| Compliant Standards | FCC Class B certified, RoHS, BSMI Class B |
| Included Accessories | Hard drive security key, accessory pack |
Power | |
| Power Device | Internal power supply |
| Voltage Required | AC 120/230 V (50/60 Hz) |
Software / System Requirements | |
| Storage Operating System | Synology DiskStation Manager |
| Software Included | Drivers & Utilities |
| OS Required | Microsoft Windows 7 or later, Apple MacOS X 10.11 or later |
Manufacturer Warranty | |
| Service & Support | Limited warranty - 3 years |
Environmental Parameters | |
| Min Operating Temperature | 0 °C |
| Max Operating Temperature | 40 °C |
| Humidity Range Operating | 5 - 95% (non-condensing) |
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