Synology RackStation RS4021xs+ 16 Bay NAS


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SKU: Synology RS4021xs+ Categories: , ,

Synology RackStation RS4021xs+ 16 Bay NAS

Synology RackStation RS4021xs+ is a powerful 16-bay 3U storage solution designed for high throughput and data
integrity, made with built-in redundant power. Equipped with an 8-core processor and upgradable to 64 GB memory, the RS4021xs+ is capable of hosting demanding services involving virtualization, mail, office collaboration, and surveillance, to meet the unique requirements of enterprise environments.


  • Accelerated Performance: Up to 234,698 random read IOPS and 6,258 MB/s sequential read performance
  • Powerful Compute: Host multiple compute-intensive services with its 8-core Intel processor
  • Upgradability: Two PCIe expansion slots allow for M.2 NVMe cache adapters and high-bandwidth network cards
  • Redundant Power: Ensure business continuity with two redundant power supplies
  • On-demand Scalability: Supports up to 40 drive bays using two RX1217(RP)

Technical Specifications

Model Synology RS4021xs+
CPU Intel® Xeon® D-1541 8-core (16-thread) 2.1 GHz, Turbo Boost up to 2.7 GHz
Memory 16 GB DDR4 ECC UDIMM (expandable up to 64 GB)
Drive Bays 16
External port 2 x USB 3.2 Gen 1 ports, 2 x Expansion ports (Infiniband)
LAN 4 x 1GbE RJ-45, 2 x 10GbE RJ-45
Compatible HDD/SSD Type 16 x 3.5″ or 2.5″ SATA HDD/SSD (drives not included)
PCIe 3.0 slots • 2 x 8-lane x8 slots
• Supports network interface cards2 and M.2 NVMe SSD adapter cards for SSD cache
Max. IP Camera Number 90
Max. User Accounts 16000
Max. Concurrent Connections (SMB/NFS/AFP/FTP) 4000
Wake on LAN/WAN Yes
Warranty (Years) 5 Years


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