The Synology RackStation RS3621RPxs is a high-density rack-mount storage system designed for businesses and IT environments with intensive storage demands. With 12 hot-swappable SATA bays in a 2U chassis, this model delivers enterprise-level performance and scalability, while offering tightly integrated storage management, data protection, and flexible networking options.
At its core, the RS3621RPxs is powered by a 6-core Intel® Xeon® D-1531 processor (12 threads, base clock 2.2 GHz, boost up to 2.7 GHz) and ships with 8 GB DDR4 ECC memory (expandable up to 64 GB), delivering the compute and memory resources needed for multi-user access, virtualization workloads, and high-throughput file services.
In terms of performance, Synology quotes up to 4,600+ MB/s sequential read and over 315,000 random 4K IOPS in optimal conditions, making this solution viable for data-intensive workloads such as database access, media editing, VM storage, or backup target systems.
For scalability, the system supports expansion up to 36 drive bays via two RX1217(RP) expansion units, allowing growth beyond the original 12-bay configuration without replacing the main chassis.
As part of the XS series with “RPxs” suffix, it offers redundant power supplies, ECC memory support, hot-swappable drives and fans, and enterprise-grade features throughout—delivering reliability and peace of mind for business-critical storage.
6-Core Intel® Xeon® D-1531 with AES-NI encryption engine: Provides strong compute power and hardware encryption support for secure data throughput.
12 bays in a 2U Rackmount Form-Factor: Support for 3.5″ or 2.5″ SATA HDD/SSD in all bays; hot-swappable.
Redundant Power Supplies (RP) and enterprise-grade build: Ensures high availability with hot-swappable PSUs, fans and drives.
Dual PCIe 3.0 x8 slots: Allows addition of 10/25 GbE NICs or NVMe cache adapter cards for network and performance upgrades.
Up to 36 bays via expansion: Add two RX1217/RX1217RP expansion units to scale to 36 total bays.
Advanced Data Protection & File System: Supports Btrfs, file/folder-level snapshots, self-healing, and robust backup/replication features via DSM.
If you’re running a business environment where storage demands are growing, and you need high reliability, flexibility, and performance — the RS3621RPxs is built for that. The 12-bay chassis gives you a large initial capacity, while the ability to expand further to 36 bays protects your investment for future growth.
Its enterprise feature set—including ECC memory, redundant power supplies, hot-swappable components, and high performance—ensures your storage infrastructure won’t become the weak link in your operations. With support for SSD caching and network acceleration through PCIe slots, it lets you handle demanding workloads like virtualization, heavy file serving, and media production.
Synology’s mature DSM software brings advanced data protection, snapshotting, replication, virtual machine support and cloud integration—making this more than just a storage box but a platform for enterprise storage services.
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