Synology RackStation RS3618xs
High performance and scalable NAS simplifies data management, optimizes virtualization environments for large scale businesses.
Overview:
High-speed scalable storage server
Synology RS3618xs is a reliable, superior-performance network-attached storage solution for large-scale enterprises with demanding business applications. It simplifies data management, optimizes virtualization environments, and rapidly expands storage capacity with minimal time investment in setup and maintenance.
CPU
quad-core up to 2.7GHz
RAM options
8GB DDR4 ECC UDIMM, up to 64GB
Networking
Built-in dual-port 10GbE
Scalability
Up to 36 drives with RX1217/RX1217RP
Features:
Ready for 10GbE and beyond
PCIe 3.0 slots allow for faster networking options as you expand your infrastructure. Together with the built-in quad Gigabit ports, RS3618xs offers comprehensive connectivity options for link aggregation and failover configurations.
Ultimate Backup Solution
RS3618xs integrates various backup applications into an intuitive user interface, offering durable storage technologies to safeguard your valuable data on any device.

Active Backup for Business
Centralize backup tasks for VMware, Windows, and file servers. Restore whatever you want fast and reliably when needed.

Hyper Backup
Comprehensively back up your data to a local shared folder, an external device, another Synology NAS, an rsync server, or a public cloud to ensure data safety.

Synology Drive
Safeguard your computer with Synology Drive Client. Effortlessly perform real-time data backups and point-in-time file recovery.

Active Backup for Microsoft 365 / Google Workspace
On-premise backup solution with a centralized dashboard. Optimize storage efficiency with single instancing and block-level deduplication technology.
Fully certified storage virtualization solutions
Synology iSCSI storage fully supports most virtualization solutions to enhance work efficiency with easy management interface. VMware vSphere 6 and VAAI integration helps offload storage operations and optimizes computation efficiency. Windows Offloaded Data Transfer (ODX) speeds up data transfer and migration rate. OpenStack Cinder support turns your Synology NAS into a block-based storage component.




Next-generation file system for better data protection
The Btrfs file system introduces advanced storage technologies and optimized snapshots to prevent data corruption and reduce maintenance overhead. While ensuring high-level data integrity, it also offers flexible, efficient data protection and recovery tools.

- Flexible Shared Folder/User Quota System provides comprehensive quota control on all user accounts and shared folders
- Snapshot Replication provides schedulable and storage capacity-saving data protection with 1,024 shared folder backups and 65,000 system-wide snapshots
- File or folder level data restoration makes data recovery fast and flexible
- Automatic file self-healing detects and recovers corrupted files without user intervention
Powered by Synology DiskStation Manager

Central Management System
Conveniently manage your fleet of Synology NAS from a centralized console.
Snapshot Replication
Schedulable and instantaneous data protection for shared folders and iSCSI LUNs for disaster prevention.
Virtual Machine Manager
Run various operating systems in isolated sandboxes. Seamlessly clone, store, and migrate virtual machines.
Synology MailPlus
Secure, reliable, and private mail server solution with an intuitive and modern mail client.

Synology High Availability
Real-time system-level protection with automatic failover mechanism to maximize service availability.
Synology Drive
Instantly access your NAS files across multiple devices whenever you want, wherever you are.
Specifications:
RS3621xs Hardware Specifications: | |
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Hardware Specifications | |
CPU Model | Intel Xeon D-1521 |
CPU Core | 4 |
CPU Architecture | 64-bit |
CPU Frequency | 2.4 (base) / 2.7 (turbo) GHz |
Hardware encryption engine | |
Memory | 8 GB DDR4 ECC UDIMM |
Memory Module Pre-instaled | 8 GB (8 GB x 1) |
Total Memory Slots | 4 |
Maximum Memory Capacity | 64 GB (16 GB x 4) |
Drive Bays | 12 |
Maximum Drive Bays with Expansion Unit | 36 (RX1217 x 2) |
Compatible drive type |
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Hot swappable drive | |
External port |
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Expansion Port | 2 |
Expansion Port Type | Infiniband |
PCIe Expansion | 2 x Gen3 x8 slots (x8 link) |
Form Factor | 2U |
Size (Height x Width x Depth) | 88 mm x 482 mm x 724 mm |
Weight | 14.5 kg |
Rack Installation Support | 4-post 19" rack (Synology Rail Kit - RKS-02) |
Rack Installation Support | The rail kit is sold separately |
Fan Speed Mode |
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System fan | 80 mm x 80 mm x 4 pcs |
Easy Replacement System Fan | |
Power Recovery | |
Noise Level | 50.2 dB(A) |
Power Recovery | |
Wake on LAN/WAN | |
Power Supply Unit/Adapter | 500 watts |
Redundant Power Supply | |
AC input power voltage | 100 V to 240 V AC |
Power Frequency | 50 to 60Hz, single phase |
Power Consumption |
142.76 watts (Access) 55.05 watts (HDD Hibernation) |
British Thermal Unit |
487.12 BTU/hr (Access) 187.84 BTU/hr (HDD Hibernation) |
Operating Temperature | 0°C to 35°C (32°F to 95°F) |
Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
Relative Humidity | 5% to 95% RH |
Certifications and Packaging | |
Environment safety | RoHS compliant |
Package content |
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Optional accessories |
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Warranty | 5 Years |
Documentation:
Download the Synology RackStation RS3618xs Datasheet (PDF).

5-year warranty
At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.
- All Prices are Inclusive of GST
- Pricing and product availability subject to change without notice.