Synology DiskStation DS1821+ 8 Bay 4 GB RAM Diskless Tower NAS with 8x 4TB Western Digital Red Drive

Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect mission-critical data. Designed to tackle increasing amounts of unstructured data, the low-noise desktop form factor of the DS1821+ is built for both SOHO and SMB environments. With performance over 110K or 177% higher 4K random read IOPS than its predecessor, the DS1821+ is fast, with ample room for scalability.

Accelerated Performance:
177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor.

Maximize Performance:
Turbocharge HDD arrays without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache.

Expansion Made Easy:
Scale up on demand to 18 drives with two DX517 expansion units.

Includes Everything to Protect Your Data:
Back up critical data from public clouds, PCs, servers, VMs, and Synology NAS with Synology Active Backup suite, Hyper Backup, and Snapshot Replication.

Ready for 10/25GbE :
Supports 10GbE SFP+/RJ-45 and 25GbE SFP28 NICs to instantly increase network bandwidth based on your infrastructure.

CPU:

• CPU Model: AMD Ryzen_V1500B
• CPU Quantity: 1
• CPU Core: 4
• CPU Architecture: 64-bit
• CPU Frequency: 2.2 GHz
• Hardware Encryption Engine: Yes

Memory:

• System Memory: 4 GB DDR4 ECC SODIMM
• Memory Module Pre-installed: 4 GB (4 GB x 1)
• Total Memory Slots: 2
• Maximum Memory Capacity: 32 GB (16 GB x 2)

Storage:

• Drive Bays: 8
• Maximum Drive Bays with Expansion Unit: 18 (DX517 x 2)
• 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
• Hot Swappable Drive: Yes

External Ports:

• RJ-45 1GbE LAN Port: 4 (with Link Aggregation / Failover support)
• USB 3.2 Gen 1 Port: 4
• eSATA Port: 2

PCIe:

• PCIe Expansion: 1 x Gen3 x8 slot (x4 link)

Appearance:

• Size (H x W x D): 166 x 343 x 243 mm
• Weight: 6 kg

Others:

• System Fan: 120 x 120 mm x 2 pcs
• Fan Speed Mode: Full-Speed Mode, Cool Mode, Quiet Mode
• Easy Replacement System Fan: Yes
• Brightness Adjustable Front LED Indicators: Yes
• Power Recovery: Yes
• Noise Level: 22.2 dB(A)
• Scheduled Power On / Off: Yes
• Wake on LAN / WAN: Yes
• Power Supply Unit / Adapter: 250 W
• AC Input Power Voltage: 100V to 240V AC
• Power Frequency: 50/60 Hz, Single Phase
• Power Consumption: 59.8 W (Access), 26.18 W (HDD Hibernation)
• British Thermal Unit: 204.05 BTU/hr (Access), 89.33 BTU/hr (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

• 1x Main Unit with 8x 4TB Western Digital Red Drive pre-installed
• 1x Accessory Pack
• 1x AC Power Cord
• 2x RJ-45 LAN Cable
• 1x Quick Installation Guide