Product Details

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Synology 16Bay NAS (Rack Type)

(Model: RS4021xs+)




CPU Model: Intel Xeon D-1541

CPU Quantity: 1

CPU Architecture: 64-bit

CPU Frequency: 8-core 2.1 (base) / 2.7 (turbo) GHz

System Memory: 16 GB DDR4 ECC UDIMM

Memory Module Pre-installed: 16 GB (16 GB x 1)

Total Memory Slots: 4

Maximum Memory Capacity: 64 GB (16 GB x 4)

Drive Bays: 16

Maximum Drive Bays with Expansion Unit: 40 (RX1217/RX1217RP x 2)

RJ-45 1GbE LAN Port: 4 (with Link Aggregation / Failover support)

RJ-45 10GbE LAN Port: 2 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port*: 2

Expansion Port: 2

PCIe Expansion: 2 x Gen3 x8 slots (x8 link)

Internal Drives: Btrfs, EXT4

External Drives: Btrfs, EXT4, EXT3, FAT, NTFS, HFS+, exFAT

Form Factor (RU): 3U

Fan Speed Mode: Full-Speed Mode, Cool Mode, Quiet Mode

Packaging Content:
  • Main Unit x 1
  • Accessory Pack x 1
  • AC Power Cord x 2
  • Quick Installation Guide x 1


Compute – Intel® Xeon® D-1541 8-core 2.1 GHz

Networking – Built-in dual-port 10GbE

Memory – 16 GB ECC DDR4 Up to 64 GB

Scalability – Up to 40 drive bays with RX1217(RP)

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