Synology DiskStation DS1821+ - 8-bay Network Attached Storage, Black
Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Processor | |
| Processor model | V1500B |
| Processor manufacturer | AMD |
| Processor family | Ryzen Embedded |
| Processor cores | 4 |
| On-board graphics card model | Not available |
| Processor frequency | 2.2 GHz |
| Processor generation | AMD Ryzen Embedded V1000 Series |
| Memory | |
| Internal memory type | DDR4 |
| Memory slots | 2 |
| ECC | ![]() |
| Memory form factor | SO-DIMM |
| Maximum RAM supported | 32 GB |
| Internal memory | 4 GB |
| Ports & interfaces | |
| USB 2.0 ports quantity | 0 |
| Ethernet LAN (RJ-45) ports | 4 |
| eSATA ports quantity | 2 |
| Fiber ports quantity | 0 |
| PCI Express x8 (Gen 3.x) slots | 1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB port | ![]() |
| Weight & dimensions | |
| Weight | 6 kg |
| Height | 166 mm |
| Width | 343 mm |
| Depth | 243 mm |
| Energy management | |
| Power consumption (typical) | 59.8 W |
| Number of power supply units | 1 |
| AC input frequency | 50 - 60 Hz |
| AC input voltage | 100-240 V |
| Power supply location | Built-in |
| Power supply unit (PSU) capacity | 250 W |
| Power consumption (HDD standby) | 26.18 W |
| Operational conditions | |
| Operating relative humidity (H-H) | 5 - 95% |
| Storage temperature (T-T) | -20 - 60 °C |
| Operating temperature (T-T) | 0 - 40 °C |
| Networking | |
| Supported network protocols | SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV |
| Ethernet LAN | ![]() |
| Wake-on-LAN ready | ![]() |
| Link aggregation | ![]() |
| Ethernet LAN data rates | 1000 Mbit/s |
| iSCSI support | ![]() |
| Ethernet LAN data rate supported (max) | 1000 Mbit/s |
| Storage | |
| RAID levels | 0, 1, 5, 6, 10, JBOD |
| Supported file systems | BTRFS, Fat, HFS+, NTFS, ext3, ext4 |
| RAID support | ![]() |
| Storage drive interface | M.2, Serial ATA |
| Number of storage drives supported | 8 |
| Storage drive sizes supported | 2.5,3.5,M.2 |
| Storage drives installed | ![]() |
| Maximum supported storage capacity | 108 TB |
| Number of storage drives installed | 0 |
| Installed storage drive type | ![]() |
| Supported storage drive types | HDD & SSD |
| Hot-swap drive bays | ![]() |
| Storage drive capacity | 0 GB |
| Supported storage drive interfaces | M.2, Serial ATA |
| Online RAID migration | ![]() |
| Online RAID expansion | ![]() |
| Number of M.2 (M & B) slots | 2 |
| Total installed storage capacity | 0 TB |
| Operating system/software | |
| Operating system installed | DiskStation Manager |
| Server operating systems supported | Windows Server 2016, Windows Server 2019 |
| Packaging content | |
| Cables included | AC, LAN (RJ-45) |
| Other features | |
| Certification | RoHS FCC CE BSMI EAC CCC KC VCCI RCM |
| Design | |
| Chassis type | Tower |
| Cable lock slot | ![]() |
| LED indicators | ![]() |
| Product colour | Black |
| Number of fans | 2 fan(s) |
| Cooling type | Active |
| Fan diameter | 12 cm |
| Cable lock slot type | Kensington |
| Fan diameter 2 | 12 cm |
| Performance | |
| Type | NAS |
| Browser supported | Google Chrome, Firefox, Microsoft Edge, Internet Explorer 10+, Safari 10+ |
| Number of users | 2048 user(s) |
| Noise level | 22.2 dB |
| Snapshot | ![]() |
| Web-based management | ![]() |
| Access Control List (ACL) | ![]() |
| Reset button | ![]() |
| Multilingual support | ![]() |
| On/off switch | ![]() |
| Device class | Large Enterprise Business |
| Backup function | ![]() |
| Backup features | Cloud, iSCSI LUN |
| System log | ![]() |
| Hot spare | ![]() |
| Logistics data | |
| Harmonized System (HS) code | 84714100 |
| EAN | 4711174723973 |
| Warranty | 3 years |
The Synology DiskStation DS1821+ is an 8-bay network-attached storage (NAS) system designed for centralised file management and data protection. This tower-format device uses an AMD Ryzen Embedded V1500B quad-core processor at 2.2 GHz to manage multi-user workloads. Users can install up to eight 2.5-inch or 3.5-inch SATA hard drives or solid-state drives. It supports various RAID configurations, including RAID 0, 1, 5, 6, 10, and JBOD, for flexible data redundancy. Integrated hot-swap drive bays allow for disk replacement without interrupting system operation. The unit supports a maximum internal storage capacity of 108 TB.
The hardware includes 4 GB of DDR4 ECC memory, which is expandable to 32 GB via two SO-DIMM slots. Networking is handled by four Gigabit Ethernet ports that support link aggregation for increased throughput and failover protection. For local data transfers and expansion, the chassis features four USB 3.2 Gen 1 ports and two eSATA ports. Data integrity is managed through the DiskStation Manager operating system, which provides support for the Btrfs file system and snapshots. Cooling is handled by two 120 mm fans that maintain a noise level of 22.2 dB during operation. A single PCIe Gen 3 x8 slot allows for the installation of additional network interface cards or storage controllers.
Key Features:- 8-bay SATA chassis supporting both 2.5-inch and 3.5-inch hard drives and solid-state drives.
- Two dedicated M.2 slots for NVMe cache or high-speed storage volumes.
- AMD Ryzen Embedded V1500B quad-core CPU at 2.2 GHz for multi-tasking performance.
- 4 GB of DDR4 ECC RAM, which detects and corrects data errors to improve system reliability.
- Four Gigabit RJ-45 ports with link aggregation support to enhance network bandwidth.
- Support for multiple RAID levels, including RAID 5, 6, and 10, for hardware-level data redundancy.
- Active cooling system with two 120 mm fans rated at a 22.2 dB noise level.
- Expandable memory architecture supporting up to 32 GB of RAM.
Estimated delivery: 01.09 - 07.09
Today: 10:00 - 18:00
Estimated delivery: 01.09 - 07.09
Today: 09:00 - 17:00
Estimated delivery: 01.09 - 07.09
Today: 10:00 - 17:00
Estimated delivery: 01.09 - 07.09
Today: 10:00 - 18:00
Estimated delivery: 01.09 - 07.09
Today: 10:00 - 17:00
Estimated delivery time: 01.09 - 07.09
Estimated delivery time: 01.09 - 06.09
Estimated delivery time: 02.09 - 07.09
Estimated delivery time: 02.09 - 07.09
Estimated delivery time: 02.09 - 06.09
Estimated delivery time: 01.09 - 07.09
Estimated delivery time: 01.09 - 07.09
Estimated delivery time: 02.09 - 06.09
- manual pdf (English)
- leaflet (English)


