Synology RackStation RS3621xs+ 12 Bay NAS

Accelerating Business Workloads with EnterpriseGrade Data Protection

The 12-bay RS3621xs+ is capable of delivering over 238K 4K random read IOPS and 5,819 MB/s sequential read throughput— a true enterprise powerhouse. With full power supply redundancy, an 8-core processor, ECC memory, advanced snapshot technology, and file self-healing, the RS3621xs+ provides a reliable foundation to any data-driven business.


  • High Performance: Up to 238,273 random read IOPS and 5,819 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 36 drive bays using two RX1217(RP)
  • Warranty: Comes with Synology’s 5-year warranty

Technical Specifications

Model Synology RS3621xs+
CPU Intel Xeon D-1541 8-core (16-thread) 2.1 GHz, Turbo Boost up to 2.7 GHz
Memory 8 GB DDR4 ECC UDIMM (expandable up to 64 GB)
Drive Bays 12
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 •12 x 3.5″ or 2.5″ SATA HDD/SSD (drives not included)
• Only drives listed on the compatibility list can be used to create storage pools5
• Only Synology SAT5200 2.5″ or Synology SNV3500 series SSDs (sold separately) can be used to create SSD caches
Performance (MB/s) 238,273 4K random read IOPS and 5,819 MB/s sequential read performance
Max. IP Camera Number 90
Max. User Accounts 16000
Max. Concurrent Connections (SMB/NFS/AFP/FTP)  2000
Wake on LAN/WAN   Yes
Warranty (Years) 5


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