---
title: Synology RackStation RS3621RPxs 12-bay NAS Storage
date: 2026-03-18T21:49:06Z
modified: 2026-05-25T12:00:02Z
permalink: "https://tech.co.za/product/synology-rackstation-rs3621rpxs-12-bay-nas-storage/"
type: product
status: publish
excerpt: Synology RS3621RPxs is a powerful 12-bay storage server. Its 6-core processor enables compute-intensive services while its redundant power, ECC memory, and Btrfs file system safeguard mission-critical data
wpid: 574755
product_brand:
  - Synology
product_type:
  - simple
product_cat:
  - Data Storage
  - Internal HDD (Hard Disk Drive)
featured_image: "https://tech.co.za/wp-content/uploads/2026/03/rs3621rpxsa.png"
featured_image_alt: rackstation 12 bay (up to 36 bay); 6 core 2.2 ghz; 8gb ddr4 ecc udimm ram (up to 64gb); 4x gbe lan; 2x usb3.2
---

Synology RS3621RPxs is a powerful 12-bay storage server. Its 6-core processor enables compute-intensive services while its redundant power, ECC memory, and Btrfs file system safeguard mission-critical data



| Hardware Specifications |  |
| --- | --- |
| CPU |  |
| Intel Xeon D-1531 |  |
| CPU Quantity | 1 |
| CPU Cores | 6 |
| CPU Threads | 12 |
| CPU Architecture | 64-bit |
| CPU Frequency | 2.2 (base) / 2.7 (turbo) GHz |
| Hardware Encryption Engine | Yes |
| Memory |  |
| System Memory | 8 GB DDR4 ECC UDIMM |
| Total Memory Slots | 4 |
| Maximum Memory Capacity | 64 GB (16 GB x 4) |
| Notes | Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance. Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion. For multi-module memory configurations, all modules must be identical and share the same model number. Check the [Product Manual](https://kb.synology.com/search?sources%5B%5D=hardware_installation_guide) of your Synology product for recommended memory configurations. |
| Storage |  |
| Drive Bays | 12 |
| Maximum Drive Bays with Expansion Unit | 36 (RX1217 x 2) |
| Drive Type [(See all supported drives)](https://www.synology.com/en-global/compatibility?search_by=drives) | 3.5″ SATA HDD 2.5″ SATA SSD |
| Hot Swappable Drive\* | Yes |
| Notes | Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the [compatibility list](https://www.synology.com/en-global/compatibility). The use of non-validated components may limit certain functionality and result in data loss and system instability. |
| External Ports |  |
| RJ-45 1GbE LAN Port | 4 |
| USB 3.2 Gen 1 Port | 2 |
| Expansion Port | 2 |
| Expansion Port Type | Infiniband |
| More info: | [https://www.synology.com/en-global/products/RS3621RPxs#specs](https://www.synology.com/en-global/products/RS3621RPxs#specs) |

Notes:

1. Model specifications are subject to change without prior notice.
2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
4. If usage requirements exceed the specifications above, please contact our [regional partners](https://www.synology.com/wheretobuy) for professional advice.