The Synology RS4021xs+ is a high-performance rackmount NAS (Network Attached Storage) system designed for businesses that need efficient data management, storage, and backup solutions.

Key Specifications:

• CPU: Intel Xeon D-1541 8-core 2.1 GHz, turbo boost up to 2.7 GHz
• Memory: 16 GB DDR4 ECC RAM (expandable up to 64 GB)
• Storage: Supports up to 16 drive bays, compatible with both 3.5″ and 2.5″ SATA HDD/SSD (expandable with RX1217(RP))
• Network: Four 1GbE LAN ports, two 10GbE LAN ports (expandable with PCIe add-in cards)
• RAID Support: RAID types include Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, and Synology’s proprietary RAID (SHR).
• Max Capacity: Up to 1,024 TB with expansion units
• Performance: Capable of over 234,000 random read IOPS and high-speed throughput
• Scalability: Can be expanded using RX1217 or RX1217RP expansion units to add more drives
• File System: Supports the Btrfs and EXT4 file systems, offering data integrity, snapshots, and replication.

Features:

• Data Protection: Synology’s powerful DSM (DiskStation Manager) offers features like snapshots, replication, and hybrid cloud solutions.
• Virtualization Ready: The NAS is certified for VMware, Citrix, and Microsoft Hyper-V, making it ideal for virtual machine storage.
• Security: Advanced security features, including AES-NI hardware encryption, firewall, IP blocking, and more.
• Redundancy: Supports redundant power supplies (optional with the RP version) and dual 10GbE for fault tolerance and high availability.
• Applications: Wide array of business applications such as file sharing, syncing, remote access, backup, and surveillance.

This model is ideal for businesses with demanding workloads, such as virtualization, large-scale backup, and high-availability environments.