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.
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.
Turbocharge and supersize it
Upgrade your DS1821+ to match your data requirements, whether it is for faster networking or for higher storage capacity.
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.
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.
Works best with Synology drives
Engineered to handle intensive 24/7 workloads, Synology drives consistently deliver top-grade performance.
| Storage |
|---|
| Supported file systems |
BTRFS, Fat, HFS+, NTFS, ext3, ext4 |
| Hot-swap drive bays |
Yes |
| Online RAID expansion |
Yes |
| Online RAID migration |
Yes |
| RAID levels |
0, 1, 5, 6, 10, JBOD |
| RAID support |
Yes |
| Number of M.2 (M & B) slots |
2 |
| Maximum supported storage capacity |
108 TB |
| Storage drive sizes supported |
2.5,3.5,M.2 |
| Supported storage drive interfaces |
M.2, Serial ATA |
| Storage drive capacity |
0 GB |
| Supported storage drive types |
HDD & SSD |
| Installed storage drive type |
No |
| Number of storage drives supported |
8 |
| Total installed storage capacity |
0 TB |
| Storage drives installed |
No |
| Processor |
|---|
| On-board graphics card model |
Not available |
| Processor cores |
4 |
| Processor frequency |
2.2 GHz |
| Processor model |
V1500B |
| Processor generation |
AMD Ryzen Embedded V1000 Series |
| Processor family |
Ryzen Embedded |
| Processor manufacturer |
AMD |
| Memory |
|---|
| Memory form factor |
SO-DIMM |
| Memory slots |
2 |
| ECC |
Yes |
| Maximum RAM supported |
32 GB |
| Internal memory type |
DDR4 |
| Internal memory |
4 GB |
| Network |
|---|
| Supported network protocols |
SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
| Link aggregation |
Yes |
| Wake-on-LAN ready |
Yes |
| iSCSI support |
Yes |
| Ethernet LAN data rates |
1000 Mbit/s |
| Ethernet LAN |
Yes |
| Ports & interfaces |
|---|
| PCI Express x8 (Gen 3.x) slots |
1 |
| eSATA ports quantity |
2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity |
4 |
| USB port |
Yes |
| Ethernet LAN (RJ-45) ports |
4 |
| Design |
|---|
| Cable lock slot type |
Kensington |
| Cable lock slot |
Yes |
| LED indicators |
Yes |
| Fan diameter |
12 cm |
| Fan diameter 2 |
12 cm |
| Number of fans |
2 fan(s) |
| Product colour |
Black |
| Cooling type |
Active |
| Chassis type |
Tower |
| Performance |
|---|
| Access Control List (ACL) |
Yes |
| Reset button |
Yes |
| On/off switch |
Yes |
| Browser supported |
Google Chrome, Firefox, Microsoft Edge, Internet Explorer 10+, Safari 10+ |
| Hot spare |
Yes |
| System log |
Yes |
| Web-based management |
Yes |
| Snapshot |
Yes |
| Noise level |
22.2 dB |
| Number of users |
2048 user(s) |
| Multilingual support |
Yes |
| Backup features |
Cloud, iSCSI LUN |
| Backup function |
Yes |
| Device class |
Large Enterprise Business |
| Type |
NAS |
| Software |
|---|
| Server operating systems supported |
Windows Server 2016, Windows Server 2019 |
| Operating system installed |
DiskStation Manager |
| Power |
|---|
| AC input frequency |
50 - 60 Hz |
| AC input voltage |
100-240 V |
| Power consumption (HDD standby) |
26.18 W |
| Power consumption (typical) |
59.8 W |
| Number of power supply units |
1 |
| Power supply unit (PSU) capacity |
250 W |
| Power supply location |
Built-in |
| Weight & dimensions |
|---|
| Weight |
6 kg |
| Height |
166 mm |
| Depth |
243 mm |
| Width |
343 mm |
| General |
|---|
| Product family |
DiskStation |
| Packaging content |
|---|
| Cables included |
AC, LAN (RJ-45) |
| Operational conditions |
|---|
| Storage temperature (T-T) |
-20 - 60 °C |
| Operating relative humidity (H-H) |
5 - 95% |
| Operating temperature (T-T) |
0 - 40 °C |
| Logistics data |
|---|
| Harmonized System (HS) code |
84714100 |
| Other features |
|---|
| Certification |
RoHSFCCCEBSMIEACCCCKCVCCIRCM |
