| Main centres: | 1-3 business days |
| Regional areas: | 3-4 business days |
| Remote areas: | 3-5 business days |
Brand New & Sealed with Manufacturer Warranty
The Synology RackStation RS4021xs+ is a high-performance 16-bay 3U rackmount NAS designed for enterprise storage, backup, virtualisation and data protection. Powered by an Intel Xeon D-1541 8-core processor, 16GB DDR4 ECC memory and built-in 10GbE connectivity, it delivers reliable, scalable storage for demanding multi-user business environments.
The RS4021xs+ is built for high-throughput business environments, offering strong performance for file sharing, backup, virtualisation storage, collaboration platforms and surveillance deployments.
Integrated dual 10GbE ports and four Gigabit Ethernet ports provide flexible network connectivity, while PCIe expansion supports additional networking or M.2 NVMe SSD cache cards for performance-focused deployments.
With a 3U rackmount chassis, 16 hot-swappable drive bays and redundant power supplies, the RS4021xs+ is designed for continuous business storage operation and simplified maintenance.
| Specification | Details |
|---|---|
| Brand | Synology |
| Model | RackStation RS4021xs+ |
| Product Type | 16-Bay Rackmount NAS |
| Form Factor | 3U Rackmount |
| Processor | Intel Xeon D-1541 |
| Processor Cores / Threads | 8 Cores / 16 Threads |
| Processor Speed | 2.1GHz |
| Hardware Encryption | AES-NI |
| System Memory | 16GB DDR4 ECC UDIMM |
| Maximum Memory | 64GB |
| Drive Bays | 16 × 3.5-inch / 2.5-inch SATA HDD/SSD Bays |
| Hot-Swappable Drives | Supported |
| Network Ports | 2 × 10GbE RJ45, 4 × 1GbE RJ45 |
| USB Ports | 2 × USB 3.2 Gen 1 Type-A |
| Expansion Ports | 2 × Expansion Ports |
| PCIe Expansion | 2 × PCIe 3.0 x8 Slots |
| RAID Support | Synology RAID F1, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10 |
| Internal File System | Btrfs and ext4 |
| Operating System | Synology DiskStation Manager (DSM) |
| Maximum Single Volume Size | 108TB / 200TB |
| Maximum System Snapshots | 65,536 |
| Power Supply | Redundant Power Supply |
| System Fans | 3 × 80mm Fans |
| Dimensions | 132.3 × 482 × 656.5 mm |
| Weight | 17.4 kg |
| Package Contents | Main Unit, Accessory Pack, 2 × AC Power Cords and Quick Installation Guide |
| Applications | Enterprise Storage, Backup, Virtualisation, File Sharing, Surveillance, Collaboration and Disaster Recovery |
The Synology RackStation RS4021xs+ delivers scalable 16-bay enterprise storage, built-in 10GbE connectivity, ECC memory and redundant power protection for demanding business NAS deployments.
