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- CPU Model AMD Ryzen V1500B
- CPU Core 4
- System Memory 4 GB DDR4 ECC SODIMM
- Drive Bays 8
The Synology DiskStation DS1821+ is a powerful and flexible 8-bay NAS enclosure designed for small offices, IT enthusiasts, and growing businesses that demand high-performance, data protection, and scalability. Powered by a 2.2 GHz AMD Ryzen V1500B Quad-Core processor with built-in AES-NI encryption, the DS1821+ delivers seamless file sharing, backup, and virtualization capabilities, all while maintaining strong security.
Processor: AMD Ryzen V1500B 4-Core 2.2GHz with AES-NI hardware encryption
Memory: 4GB DDR4 ECC RAM (expandable up to 32GB)
Drive Bays: 8 x 3.5"/2.5" SATA HDD/SSD
Scalability: Expandable up to 15 drives with 2 x DX517 expansion units
M.2 SSD Slots: 2 x built-in M.2 2280 NVMe SSD slots for cache acceleration (no drive bay use)
RAID Support: RAID 0, 1, 5, 6, 10, JBOD for flexible data protection
File System: Btrfs and EXT4 support for robust data integrity
Expansion Slot: 1 x PCIe Gen 3.0 x8 (x4 link) for 10GbE or other upgrades
LAN Ports: 4 x Gigabit Ethernet with Link Aggregation & Failover
USB Ports: 4 x USB 3.2 Gen 1
eSATA Ports: 2 x for storage expansion
Maximum Capacity: Up to 108TB (using 18TB drives in each bay)
Virtualization Ready: Supports VMware, Citrix, Microsoft Hyper-V, and OpenStack
Cooling: Dual fans for efficient thermal control
Noise Level: Quiet operation ideal for office use
Power Management: Scheduled power on/off, HDD hibernation for reduced power consumption
Operating System: Synology DiskStation Manager (DSM)
Advanced Apps: File sharing, backup, iSCSI, Surveillance Station, Docker, media server
Security: AES 256-bit encryption, firewall, VPN, HTTPS support
Remote Access: Secure access from any device using Synology mobile and web apps
Businesses seeking a secure private cloud solution
Offices needing centralized storage and backup
IT professionals managing virtualization and high-speed networks
Scale your data storage with confidence – The Synology DS1821+ combines power, flexibility, and future-readiness in a compact, high-capacity NAS solution.
| CPU | ||
| CPU Model | AMD Ryzen V1500B | |
| CPU Quantity | 1 | |
| CPU Core | 4 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 2.2 GHz | |
| Memory | ||
| System Memory | 4 GB DDR4 ECC SODIMM | |
| Memory Module Pre-installed | 4 GB (4 GB x 1) | |
| Total Memory Slots | 2 | |
| Max Memory Capacity | 32 GB (16 GB x 2) | |
| Storage | ||
| Drive Bays | 8 | |
| M.2 Drive Slots | 2 (NVMe) | |
| Compatible Drive Type | 3.5\ SATA HDD, 2.5\" SATA HDD, 2.5\" SATA SSD, M.2 2280 NVMe SSD" | |
| Max Bays w/ Expansion Unit | 18 (DX517 x 2) | |
| Hot Swappable Drive | No | |
| External Ports | ||
| RJ-45 1GbE LAN Port | 4 | |
| USB 3.2 Gen 1 Port | 4 | |
| Expansion Port | 2 | |
| Expansion Port Type | eSATA | |
| PCIe | ||
| PCIe Expansion | 1 x Gen3 x8 slot (x4 link) | |
| Appearance | ||
| Size (Height x Width x Depth) | 166 mm x 343 mm x 243 mm | |
| Weight | 6 kg | |
| Others | ||
| System Fan | 120 mm x 120 mm x 2 pcs | |
| Fan Speed Mode | Full-Speed Mode, Cool Mode, Quiet Mode | |
| Noise Level | 22.2 dB(A) | |
| Power Supply Unit / Adapter | 250 watts | |
| AC Input Power Voltage | 100V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption | 59.8 watts (Access), 26.18 watts (HDD Hibernation) | |
| Temperature | ||
| Operating Temperature | 0°C to 40°C (32°F to 104°F) | |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
| Warranty | ||
| 2-years hardware warranty | Yes | |
| Extended Warranty | Yes | |
| Environment | ||
| RoHS Compliant | Yes | |
| Packaging Content | ||
| Main Unit | 1 | |
| Accessory Pack | 1 | |
| AC Power Cord | 1 | |
| RJ-45 LAN Cable | 2 | |
| Quick Installation Guide | 1 | |
| Optional Accessories | ||
| DDR4 ECC SODIMM | D4ES01-4G/D4ES01-8G/D4ECSO-2666-16G | |
| Expansion Units | DX517 | |
| Enterprise Series 3.5" SATA HDD | HAT5300 Series | |
| Plus Series 3.5" SATA HDD | HAT3300 Series | |
| Enterprise Series 2.5" SATA SSD | SAT5200 Series | |
| Enterprise Series M.2 2280 NVMe SSD | SNV3400 Series | |
| 25GbE Network Interface Card | E25G30-F2 | |
| 10GbE Network Interface Card | E10G21-F2/E10G30-T2/E10G18-T1 | |
| Certification | ||
| FCC | Yes | |
| CE | Yes | |
| BSMI | Yes | |
| VCCI | Yes | |
| RCM | Yes | |
| EAC | Yes | |
| CCC | Yes | |
| KC | Yes | |
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