Synology DiskStation DS1821+

High capacity storage and data protection for anyone Synology DiskStation DS1821+ is a powerful 8-bay network-attached-storage solution designed to store and protect missioncritical 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.

Product Highlights
  • • Accelerated Performance 177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor1
  • Maximize Performance Turbocharge HDD arrays by 20x or more2 without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache3
  • Expansion Made Easy Scale-up on-demand to 18 drives with two DX517 expansion units4
  • Includes Everything to Protect Your Data Back up critical data to and from public clouds, Windows PCs and servers, virtual machines, and data on the NAS with Synology Active Backup suite, Hyper Backup, and Snapshot Replication
  • Ready for 10GbE Add in a 10GbE SFP+ or RJ-45 NIC to instantly increase network bandwidth based on your existing infrastructure5
Technical Specifications
  • CPU AMD RyzenTM V1500B quad-core 2.2 GHz
  • Hardware encryption engine Yes (AES-NI)
  • Memory 4 GB DDR4 ECC SODIMM (expandable up to 32 GB)
  • Compatible drive type9 • 8 x 3.5" or 2.5" SATA HDD/SSD (drives not included) • 2 x M.2 2280 NVMe SSD (drives not included)
  • Hot swappable drive Yes External port • 4 x USB 3.2 Gen 1 • 2 x eSATA
  • Size (HxWxD) 166 x 343 x 243 mm
  • Weight 6.0 kg LAN port 4 x 1GbE RJ-45
  • Wake on LAN/WAN Yes PCIe 3.0 slot • 1 x 4-lane x8 slot • Supports 10GbE network interface cards
  • Scheduled power on/off Yes
  • System fan 2 (120 x 120 x 25 mm)
  • AC input power voltage 100 V to 240 V AC
  • Power frequency 50/60 Hz, single phase
  • 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 Maximum operating altitude 5,000 m (16,400 ft)