Designed for scalability and performanceThe 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.A powerhouse on all frontsThe 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.Turbocharge and supersize itUpgrade your DS1821+ to match your data requirements, whether it is for faster networking or for higher storage capacity.Ultimate file management and sharingFile 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.Fully certified storage virtualization solutionsSynology 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 SolutionDS1821+ integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.Works best with Synology drivesEngineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
| Storage | |
| Storage drives installed: |  |
| Number of storage drives supported: | 8 |
| Installed storage drive type: | |
| Supported storage drive types: | HDD & SSD |
| RAID support: |  |
| Supported storage drive interfaces: | M.2, Serial ATA |
| Storage drive sizes supported: | 2.5,3.5,M.2 |
| Maximum supported storage capacity: | 108 TB |
| Number of M.2 (M & B) slots: | 2 |
| RAID levels: | 0, 1, 5, 6, 10, JBOD |
| Online RAID migration: | |
| Online RAID expansion: | |
| Hot-swap drive bays: | |
| Supported file systems: | BTRFS, Fat, HFS+, NTFS, ext3, ext4 |
| Processor | |
| Processor family: | AMD Ryzen |
| Processor manufacturer: | AMD |
| Processor model: | V1500B |
| Processor frequency: | 2.2 GHz |
| Processor cores: | 4 |
| On-board graphics card model: | Not available |
| Memory | |
| Internal memory: | 4 GB |
| Internal memory type: | DDR4 |
| Maximum RAM supported: | 32 GB |
| Memory slots: | 2 |
| Memory form factor: | SO-DIMM |
| ECC: | |
| Network | |
| Ethernet LAN: | |
| Ethernet LAN data rates: | 1000 Mbit/s |
| iSCSI support: | |
| Wake-on-LAN ready: | |
| Supported network protocols: | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
| Link aggregation: | |
| Ports & interfaces | |
| Ethernet LAN (RJ-45) ports: | 4 |
| USB port: | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: | 4 |
| eSATA ports quantity: | 2 |
| PCI Express x8 (Gen 3.x) slots: | 1 |
| Design | |
| Chassis type: | Tower |
| Cooling type: | Active |
| Product colour: | Black |
| Number of fans: | 2 fan(s) |
| Fan diameter: | 12 cm |
| Fan diameter 2: | 12 cm |
| LED indicators: | |
| Cable lock slot: | |
| Cable lock slot type: | Kensington |
| Performance | |
| Type: | NAS |
| Device class: | Large Enterprise Business |
| Backup function: | |
| Backup features: | Cloud, iSCSI LUN |
| Multilingual support: | |
| Number of users: | 2048 user(s) |
| Noise level: | 22.2 dB |
| Snapshot: | |
| Web-based management: | |
| Access Control List (ACL): | |
| Reset button: | |
| On/off switch: | |
| Browser supported: | Google Chrome, Firefox, Microsoft Edge, Internet Explorer 10+, Safari 10+ |
| System log: | |
| Hot spare: | |
| Software | |
| Operating system installed: | DiskStation Manager |
| Server operating systems supported: | Windows Server 2016, Windows Server 2019 |
| Power | |
| Power supply location: | Built-in |
| Power supply unit (PSU) capacity: | 250 W |
| Number of power supply units: | 1 |
| Power consumption (typical): | 59.8 W |
| Power consumption (HDD standby): | 26.18 W |
| AC input voltage: | 100-240 V |
| AC input frequency: | 50 - 60 Hz |
| Weight & dimensions | |
| Width: | 343 mm |
| Depth: | 243 mm |
| Height: | 166 mm |
| Weight: | 6 kg |
| Packaging content | |
| Cables included: | AC, LAN (RJ-45) |
| Operational conditions | |
| Operating temperature (T-T): | 0 - 40 °C |
| Operating relative humidity (H-H): | 5 - 95% |
| Storage temperature (T-T): | -20 - 60 °C |
| Certificates | |
| Certification: | RoHS FCC CE BSMI EAC CCC KC VCCI RCM |
| Logistics data | |
| Harmonized System (HS) code: | 84714100 |
