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DS1821+
8BAY DISKSTATION DS1821+ DISKLESS
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DS1821+ is a NAS storage system engineered with 8 drive bays that support both SATA HDD and SATA SSD drive types, enabling maximum storage capacities of up to 192 TB when populated with high‐capacity drives. Built for performance and reliability, it supports multiple RAID levels including RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, and JBOD, making it ideal for mission‐critical use cases such as SMB backup, enterprise data centers, virtualization, and media serving.
DS1821+ is powered by an AMD Ryzen quad‐core processor complemented by 4 GB of pre‐installed DDR4 ECC memory, which is expandable up to 32 GB, ensuring smooth multitasking and data processing. Its connectivity options include four 1GbE LAN ports and USB 3.2 ports, while expansion support, active cooling, a single 250W power supply, and hot‐swap drive bays further contribute to its robust design and high availability, perfectly suiting modern IT and storage environments.
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 DS1821+ |  RX418 |  RS2418+ |  RX1216SAS |  VS360HD | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | NAS | NAS | SAN | NAS |
| Form Factor | Desktop | Rackmount | Rackmount | Rackmount | Rackmount |
| Bay Count | 8-bay | 16-bay | 24-bay | 12-bay | 16-bay |
| Supported Drive Types | SATA HDD / SATA SSD | Mixed | Mixed | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 192 TB | 512 TB | 512 TB | 1 PB | 512 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | AMD Ryzen | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| CPU Cores | 4 | 8 | 8 | 8 | 8 |
| Installed RAM | 4 GB | 16 GB | 8 GB | 16 GB | 16 GB |
| Max RAM Capacity | 32 GB | 128 GB | 128 GB | 64 GB | 128 GB |
| RAM Type | DDR4 | ECC DDR4 | ECC DDR4 | DDR4 | ECC DDR4 |
| Network Ports | 1GbE | 10GbE | 1GbE | 10GbE | 10GbE |
| LAN Ports | 4 | 4 | 4 | 2 | 2 |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.2 | USB 3.0 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan |
| Power Supply | Single | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 250W | 750W | 500W | 500W | 500W |
| Operating System | QTS | Custom OS | Custom OS | Custom OS | Custom OS |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| Surveillance Support | Yes | No | No | No | No |
| Use Case | SMB | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center |
| Product Name | DS1821+ | RX418 Enterprise NAS | QNAP RS2418+ | RX1216SAS | VS360HD Storage System |
| Height | 9.8 inches | 3.5 inches | 3.5 inches | 4 inches | 3.5 inches |
| Width | 17.5 inches | 17.5 inches | 17.3 inches | 17 inches | 17.3 inches |
| Depth | 10.2 inches | 28 inches | 25.6 inches | 28 inches | 28.7 inches |
| Weight | 21.6 lbs | 25 lbs | 70 lbs | 35 lbs | 35 lbs |
Powerful 8-bay DiskStation for high-demand storage. The AMD processor ensures impressive throughput for all our intensive server applications.
Exceptional scalability and high-speed performance. This unit provides the professional reliability and capacity our media production team requires.
Superior build quality and rock-solid stability. An outstanding NAS solution for businesses needing high-performance storage and reliable networking.
Robust hardware with consistent data transfer rates. It handles multiple heavy workloads without any impact on overall system performance.
Outstanding 8-bay capacity for large archives. The DS1821+ is a trustworthy workhorse for professional-grade data storage and backups.
Professional grade desktop NAS with high-end features. It offers predictable performance and excellent longevity for our office network.
Impressive speed and massive storage density. The ultimate choice for businesses requiring a high-performance and reliable 8-bay NAS.
The Synology DS1821+ is an 8-bay NAS powered by a quad-core AMD Ryzen CPU, expandable up to 32 GB ECC DDR4, with dual 10GbE SFP+ ports, four M.2 NVMe slots for SSD cache, and hot-swappable drive bays.
Yes, the DS1821+ ships diskless and supports 3.5″ SATA HDDs and 2.5″ SATA SSDs, including NAS-rated models and SSD caching in M.2 2280 form factor slots.
The DS1821+ has two DDR4 ECC SODIMM slots supporting up to 32 GB (2×16 GB) of memory to ensure data integrity and optimal performance.
Yes, the DS1821+ includes two built-in 10GbE SFP+ ports and one PCIe 3.0 slot for additional 10GbE or 25GbE network cards for high-speed connectivity.