Synology RackStation RS3621RPxs 12-Bay NAS Enclosure
Enterprise-grade 12‑bay rackmount NAS with Intel Xeon D‑1531 six-core CPU, 8 GB ECC DDR4 (up to 64 GB), dual PCIe for 10 GbE/SSD cache, redundant power supply, scalable to 36 bays.
Product Overview
The Synology RackStation RS3621RPxs is a high-performance 12‑bay 2U rackmount NAS designed for mission-critical business environments. Powered by an Intel Xeon D‑1531 six-core processor and 8 GB of ECC DDR4 memory (expandable to 64 GB), it delivers robust compute capabilities, high I/O throughput, and enterprise-grade data protection. Featuring dual PCIe slots for SSD caching or 10/25 GbE network expansion, built-in redundant power supplies, hot-swappable fans, and support for up to 36 drives with RX1217(RP) units, it caters to scalable virtualized workloads and demanding file services.
Key Features
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Intel Xeon D‑1531 six-core 2.2 GHz CPU (up to 2.7 GHz turbo) delivering strong multitasking and AES-NI encryption performance.
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8 GB ECC DDR4 memory included, expandable to 64 GB across four UDIMM slots
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12 hot-swappable drive bays (3.5″/2.5″ SATA SSD/HDD); expands to 36 bays with two RX1217(RP) units.
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Dual PCIe Gen3 x8 slots (electrical x8) support SSD caching and 10/25 GbE network cards.
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Redundant hot-swappable 500 W power supplies and fans for continuous uptime B&H Photo Video
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High I/O throughput: up to 4,718 MB/s sequential read, 189K 4K random read IOPS.
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DSM software with Btrfs, snapshots, file self-healing, and High Availability clustering support
Specs
| Specification | Details |
|---|---|
| CPU | Intel Xeon D‑1531, 6-core 2.2 GHz (turbo to 2.7 GHz) |
| Memory | 8 GB ECC DDR4 (1×8 GB); 4 DIMM slots, up to 64 GB |
| Drive Bays | 12 × hot-swappable 3.5″/2.5″ SATA |
| Max Expansion | Up to 36 bays with RX1217(RP) units |
| PCIe Slots | 2 × Gen3 x8 (electrical x8) |
| Network Connectivity | 4 × 1 GbE RJ‑45; PCIe for 10/25 GbE expansion |
| USB Ports | 2 × USB 3.2 Gen 1 |
| RAID Support | SHR, RAID 0/1/5/6/10, RAID F1, JBOD, Basic |
| File Systems | Btrfs, EXT4 (internal); external: Btrfs, EXT4/3, FAT, NTFS, HFS+, exFAT |
| Power Supply | Dual 500 W redundant PSUs |
| Cooling & Noise | Hot-swappable fans; ~50 dB(A) at full load |
| Performance Metrics | 4,718 MB/s sequential read; 189K 4K IOPS |
| Dimensions (2U Rack) | ~88 × 482 × 724 mm; Weight ~14.5 kg |
| Warranty | 5 years standard |
Why Choose This Product
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Combines enterprise-processing power (Xeon D) with ECC memory and scalable storage in a compact 2U form.
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Dual PCIe slots and redundant power enable high availability and future-proof networking/storage expansion.
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High I/O and snapshot-enabled Btrfs file system support virtualization, database, and intensive workloads.
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Built for continuous uptime with hot-swappable components and high availability clustering support.
FAQs
Q1: What is the maximum memory supported?
Supports up to 64 GB ECC DDR4 across four UDIMM slots (1 × 8 GB pre-installed).
Q2: Can I expand storage beyond 12 drives?
Yes—with two RX1217(RP) expansion units, total bays can scale to 36.
Q3: Does it support 10/25 GbE network connectivity?
Yes—add a compatible network card via one of the PCIe slots.
Q4: Is it suitable for virtualization or iSCSI storage?
Absolutely—DSM supports VMware, Hyper-V, and virtual machines via Virtual Machine Manager. High IOPS and Xeon CPU make it well-suited .
Q5: What happens if a power supply fails?
Redundant hot-swappable PSUs ensure continuous operation during a failure or replacement.
Q6: Is this rack NAS loud in operation?
It can reach ~50 dB(A) under full workload, making it best suited for data center environments with noise isolation.
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