| CPU Model | CPU Quantity | CPU Core | CPU Architecture | CPU Frequency | Hardware Encryption Engine |
| Intel Xeon D-1541 | 1 (per controller) | 8 | 64-bit | 2.1 (base) / 2.7 (turbo) GHz | Yes |
| System Memory | Memory Module Pre-installed | Total Memory Slots | Maximum Memory Capacity |
| 16 GB DDR4 ECC UDIMM | 16 GB (16 GB x 1) | 4 | 64 GB (16 GB x 4) |
| Drive Bays | Maximum Drive Bays with Expansion Unit | Compatible Drive Type* (See all supported drives) | Hot Swappable Drive* |
| 16 | 40 (RX1217 x 2) | 3.5″ SATA HDD/ 2.5″ SATA SSD | Yes |
| RJ-45 1GbE LAN Port | RJ-45 10GbE LAN Port | USB 3.2 Gen 1 Port* | Expansion Port | Expansion Port Type |
| 4 | 2 | 2 | 2 | Infiniband |
| 2 x Gen3 x8 slots (x8 link) |
| Form Factor (RU) | Size (Height x Width x Depth) | Weight | Rack Installation Support* |
| 3U | 132.3 mm x 482 mm x 656.5 mm | 17.4 kg | 4-post 19″ rack (Synology Rail Kit – RKS-02) |
| System Fan | Fan Speed Mode | Easy Replacement System Fan | Power Recovery | Noise Level* | Scheduled Power On / Off | Wake on LAN / WAN | Power Supply Unit / Adapter | Redundant Power Supply | AC Input Power Voltage | Power Frequency | Power Consumption | British Thermal Unit |
| 80 mm x 80 mm x 3 pcs | Full-Speed Mode/ Cool Mode/ Quiet Mode | Yes | Yes | 44.7 dB(A) | Yes | Yes | 800 watts/ 550 watts* | Yes | 100 V to 240 V AC | 50/60 Hz, Single Phase | 145.79 watts (Access)/ 62.68 watts (HDD Hibernation) | 497.14 BTU/hr (Access)/ 213.74 BTU/hr (HDD Hibernation) |
| Operating Temperature | Storage Temperature | Relative Humidity |
| 0°C to 35°C (32°F to 95°F) | -20°C to 60°C (-5°F to 140°F) | 5% to 95% RH |
| FCC/ CE/ BSMI/ VCCI/ RCM/ EAC/ CCC/ KC/ UL |
| 5 Years |
| RoHS Compliant |
|
|
Up to 234,698 random read IOPS and 6,258 MB/s sequential read performance1.
Host multiple compute-intensive services with its 8-core
Intel® processor.
Two PCIe expansion slots allow for M.2 NVMe cache adapters and high-bandwidth network cards.
Ensure business continuity with two redundant power supplies.
Supports up to 40 drive bays using two RX1217(RP).
Powered by Synology DSM, our unified data management operating
system, and built upon the Btrfs file system.
Synology RackStation RS4021xs+ is a High-Performance NAS for Businesses, Featuring an 8-Core Processor, Dual-Port Connectivity, and Advanced Data Protection in Mumbai, Thane, Navi Mumbai, Agra, Ahmedabad, Ahmednagar, Ajmer, Amravati, Amritsar, Aurangabad, Bangalore, Beed, Belgaum, Bharuch, Bhavnagar, Bhopal, Bhubaneswar, Calicut, Chandigarh, Chandrapur, Chennai, Coimbatore, Cuttack, Daman, Delhi, Dhule, Ernakulam, Erode, Gangtok, Ghaziabad, Goa, Hubli, Hyderabad, Indore, Jaipur, Jalgaon, Jamshedpur, Jodhpur, Kolhapur, Kolkata, Lucknow, Ludhiana, Madurai, Mysore, Nagpur, Nashik, Noida, Patna, Pondicherry, Pune, Raipur, Rajkot, Salem, Satara, Secunderabad, Shimla, Sikkim, Silvassa, Solapur, Srinagar, Surat, Udaipur, Vadodara, Valsad, Vellore, Vijayawada, and Visakhapatnam.
Synology RackStation RS4021xs+ is a High-Performance NAS for Businesses, Featuring an 8-Core Processor, Dual-Port Connectivity, and Advanced Data Protection in Mumbai, Thane, Navi Mumbai, Agra, Ahmedabad, Ahmednagar, Ajmer, Amravati, Amritsar, Aurangabad, Bangalore, Beed, Belgaum, Bharuch, Bhavnagar, Bhopal, Bhubaneswar, Calicut, Chandigarh, Chandrapur, Chennai, Coimbatore, Cuttack, Daman, Delhi, Dhule, Ernakulam, Erode, Gangtok, Ghaziabad, Goa, Hubli, Hyderabad, Indore, Jaipur, Jalgaon, Jamshedpur, Jodhpur, Kolhapur, Kolkata, Lucknow, Ludhiana, Madurai, Mysore, Nagpur, Nashik, Noida, Patna, Pondicherry, Pune, Raipur, Rajkot, Salem, Satara, Secunderabad, Shimla, Sikkim, Silvassa, Solapur, Srinagar, Surat, Udaipur, Vadodara, Valsad, Vellore, Vijayawada, and Visakhapatnam.
