RS4021xs+
Specification
CPU | ||
CPU Model | Intel Xeon D-1541 | |
CPU Quantity | 1 | |
CPU Core | 8 | |
CPU Architecture | 64-bit | |
CPU Frequency | 2.1 GHz (base) / 2.7 GHz (turbo) | |
Hardware Encryption Engine | - | |
Memory | ||
System Memory | 16 GB DDR4 ECC UDIMM | |
Memory Module Pre-installed | 16 GB (1 × 16 GB) | |
Total Memory Slots | 4 | |
Maximum Memory Capacity | 64 GB (4 × 16 GB) | |
Notes | Synology reserves the right to replace memory modules... [full text] | |
Storage | ||
Drive Bays | 16 | |
Notes | Synology only guarantees full functionality... [full text] | |
Compatible Drive Type* | 3.5" SATA HDD | |
Compatible Drive Type* | 2.5" SATA SSD | |
Hot Swappable Drive* | Yes | |
Maximum Drive Bays with Expansion | 40 (with 2 × RX1217) | |
External Ports | ||
RJ-45 1GbE LAN Port | 4 | |
Expansion Port | 2 | |
Expansion Port Type | Infiniband | |
Notes | USB 3.0 renamed to USB 3.2 Gen 1 (USB-IF 2019) | |
RJ-45 10GbE LAN Port | 2 | |
USB 3.2 Gen 1 Port* | 2 | |
PCIe | ||
PCIe Expansion | 2 × Gen3 ×8 slots (×8 link) | |
Appearance | ||
Weight | 17.4 kg | |
Notes | Rail kit sold separately | |
Form Factor (RU) | 3U | |
Rack Installation Support* | 4-post 19" rack (RKS-02) | |
Size (H × W × D) | 132.3 × 482 × 656.5 mm | |
Others | ||
System Fan | 80 × 80 × 3 pcs | |
Power Recovery | - | |
Redundant Power Supply | Yes | |
Power Frequency | 50/60 Hz | |
Power Consumption | 145.79W (Access) | |
Power Consumption | 62.68W (Hibernation) | |
Easy Replacement System Fan | - | |
Fan Speed Mode | Full-Speed/Cool/Quiet | |
Noise Level* | 44.7 dB(A) | |
Scheduled Power On/Off | - | |
Wake on LAN/WAN | - | |
Power Supply Unit | 800W / 550W* | |
AC Input Voltage | 100-240V AC | |
BTU/hr | 497.14 (Access) | |
Warranty | ||
Warranty | 3 years, extendable to 5 years with EW202 or Extended Warranty Plus | |
Optional Accessories | ||
Expansion Units | RX1217/RX1217RP | |
DDR4 ECC UDIMM | D4EC-2666-16G | |
25GbE NIC | E25G30-F2 | |
10GbE NIC | E10G21-F2, E10G30-T2, E10G18-T1 | |
Rail Kit Sliding | RKS-02 | |
Enterprise 3.5" SATA HDD | HAT5300 Series | |
Enterprise 2.5" SATA SSD | SAT5200 Series | |
M.2 SSD & 10GbE Adapter | E10M20-T1 | |
M.2 SSD Adapter | M2D20 | |
Certification | ||
Certifications | FCC, CE, BSMI, VCCI, RCM, EAC, CCC, KC, UL | |
Environment | ||
Compliance | RoHS Compliant | |
Packaging Content | ||
Compliance | Main Unit x1, Accessory Pack x1, AC Power Cord x2, Quick Installation Guide x1 | |
Temperature | ||
Relative Humidity | 5% to 95% RH | |
Operating Temp | 0°C to 35°C (32°F to 95°F) | |
Storage Temp | -20°C to 60°C (-5°F to 140°F) |
Description
Securing Your Business Assets with Synology RS4021xs+
The Synology RackStation RS4021xs+ is a robust, enterprise-grade 16-bay NAS designed to protect mission-critical data while delivering top-tier performance. Equipped with powerful hardware and advanced software features, it ensures your business operations remain fast, secure, and uninterrupted.
Exceptional Performance Meets Rock-Solid Reliability
Built for high-performance environments, the RS4021xs+ delivers:
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Over 234,000 4K random read IOPS
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Sequential read speeds of up to 6,258 MB/s
This makes it an excellent choice for data-intensive workloads, such as database hosting, high-speed file sharing, virtualization, and backup solutions in large multi-user environments.
Comprehensive Data Protection
Safeguard your valuable business data with features like:
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Advanced Btrfs File System: Prevents data corruption with built-in data integrity checks and self-healing capabilities.
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Snapshot Replication: Create and manage point-in-time copies for quick recovery.
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ECC DDR4 Memory: Detects and corrects memory errors in real time to prevent data corruption.
Powerful Hardware Configuration
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CPU: 8-core Intel Xeon D processor
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Memory: ECC DDR4 RAM for enhanced reliability (expandable)
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Storage: 16 x 3.5”/2.5” drive bays for large storage capacity
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Built-in Networking: 10GbE connectivity ensures ultra-fast data transmission
Ideal for Demanding Business Environments
The RS4021xs+ is engineered to support:
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Large enterprises and data centers
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Creative professionals with high-throughput demands
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Virtualization platforms and private clouds
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Secure and centralized business data backups
Key Benefits at a Glance
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Enterprise-grade performance and reliability
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Advanced data protection technologies
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High-speed connectivity with 10GbE built-in
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Scalable storage to grow with your business
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Powered by Synology DiskStation Manager (DSM) for intuitive management and powerful native apps
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