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Synology DS18221+ 8 Bay NAS Storage Box
Dove Code: SYN176 |
Manufacturer: DS1821+


The 8-bay Synology DS1821+ is aimed at IT enthusiast and SMB customers looking for a powerful and scalable storage solution, its business-grade backup solutions keep users safe and protected from potential data loss, while major improvements to compute capabilities and throughput means workloads are finished faster than ever before.


36 Month Return to Base Warranty


  • 177% higher 4K random read IOPS and 76% faster sequential write speeds compared to its predecessor
  • Turbocharge HDD arrays without occupying drive bays using dual built-in M.2 slots for NVMe SSD cache
  • Scale up on demand to 16 drives with two DX517 expansion units
  • Back up critical data from public clouds, PCs, servers, VMs, and Synology NAS with Synology Active Backup suite, Hyper Backup, and Snapshot Replication
  • Supports 10GbE SFP+/RJ-45 and 25GbE SFP28 NICs to instantly increase network bandwidth based on your infrastructure


ProcessorAMD RyzenTM V1500B quad-core 2.2 GHz
Memory 4 GB DDR4 ECC SODIMM (expandable up to 32 GB)
Drive Bay(s) 12
Drive Type 8 x 3.5" or 2.5" SATA HDD/SSD (Not Included)
2 x M.2 2280 NVMe SSD (Not Included)
Maximum Internal RAW Capacity64TB (8x 8TB HDD, Capacity may vary by RAID types)
Maximum Single Volume Size108TB
Supported RAID TypesSynology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
Hot Swappable Drive SupportYes
Expansion4x USB 3.2 Gen 1
2x eSATA Ports
Network4x 1GbE Ethernet RJ-45 (with Link Aggregation / Failover support)
PCIe Expansion1x Gen3 x8 slot (x4 link)
System Fan2x 120x120mm
Input Power Voltage100V to 240V AC
File SystemInternal Disk:

External Disk:
exFAT (Purchased Separately)
Dimensions (mm)343 (w) x 243 (d) x 166 (h)
Weight6 kg
Supported OSWindows® 7 onwards, macOS® 10.12 onwards
Supported BrowserChrome®, Firefox®, Edge®, Internet Explorer® 10 onwards, Safari® 10 onwards
See full manufacturer specifications