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Cyrus Knight
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Dependable 12-bay rackmount storage. Offers consistent high-speed data access for our intensive business workloads.
RS3618XS
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12BAY NAS RACKSTATION RS3618XS DISKLESS
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RS3618XS
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- 12BAY NAS RACKSTATION RS3618XS DISKLESS
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RS3618XS Overview
RS3618XS is a high-performance Rackmount NAS system featuring 12 drive bays that support mixed drive types including SATA HDD, SAS HDD, and SATA SSD, offering a total storage capacity of up to 192 TB. It supports multiple RAID configurations (RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD), is powered by Intel Xeon processors with 8 cores, and comes with 8 GB of installed ECC DDR4 memory upgradeable to 128 GB, interfacing through USB 3.0 and 1GbE network ports.
RS3618XS provides expansion support, redundant active cooling via redundant fans, and dual redundant power supplies rated at 750W, making it ideally suited for enterprise data centers, virtualization, SMB backup, and media server use cases. Its design in a 2U rackmount form factor—with a height of 3.5 inches, a width of 17.2 inches, a depth of 29.5 inches, and a weight of 66 lbs—ensures it meets demanding performance and reliability standards.
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RS3618XS Specifications
- Product Type
- Storage System
- Storage Type
- NAS
- Form Factor
- Rackmount
- Bay Count
- 12-bay
- Supported Drive Types
- Mixed
- Hot-Swap Support
- Yes
- Max Supported Capacity
- 192 TB
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD
- CPU Type
- Intel Xeon
- CPU Cores
- 8
- Installed RAM
- 8 GB
- Max RAM Capacity
- 128 GB
- RAM Type
- ECC DDR4
- Network Ports
- 1GbE
- LAN Ports
- 4
- USB Ports
- USB 3.0
- Expansion Support
- Yes
- Cooling
- Redundant Fan
- Power Supply
- Redundant
- Power Supply Wattage
- 750W
- Operating System
- QTS
- Snapshot Support
- Yes
- Cloud Sync Support
- Yes
- Virtualization Ready
- Yes
- iSCSI Support
- Yes
- Surveillance Support
- Yes
- Use Case
- Enterprise Data Center
- Product Name
- QNAP Enterprise Storage Solution RS3618xs
- Height
- 3.5 inches
- Width
- 17.2 inches
- Depth
- 29.5 inches
- Weight
- 66 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| RS3618XS |  FS3600 |  DS1817 |  DS1621XS+ |  DS1821+ | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | NAS | NAS | NAS | NAS |
| Form Factor | Rackmount | Rackmount | Desktop | Rackmount | Desktop |
| Bay Count | 12-bay | 12-bay | 8-bay | 6-bay | 8-bay |
| Supported Drive Types | Mixed | Mixed | SATA HDD / SATA SSD | Mixed | SATA HDD / SATA SSD |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 192 TB | 1 PB | 96 TB | 96 TB | 192 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / JBOD |
| CPU Type | Intel Xeon | Intel Xeon | Intel Atom | Intel Xeon | AMD Ryzen |
| CPU Cores | 8 | 8 | 4 | 4 | 4 |
| Installed RAM | 8 GB | 16 GB | 2 GB | 8 GB | 4 GB |
| Max RAM Capacity | 128 GB | 64 GB | 8 GB | 32 GB | 32 GB |
| RAM Type | ECC DDR4 | ECC DDR4 | DDR3 | ECC DDR4 | DDR4 |
| Network Ports | 1GbE | 10GbE | 1GbE | 10GbE | 1GbE |
| LAN Ports | 4 | 2 | 4 | 2 | 4 |
| USB Ports | USB 3.0 | USB 3.1 | USB 3.0 | USB 3.2 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Redundant Fan | Active | Active | Redundant Fan | Active |
| Power Supply | Redundant | Redundant | Single | Redundant | Single |
| Power Supply Wattage | 750W | 500W | 250W | 350W | 250W |
| Operating System | QTS | Custom OS | DSM | QTS | QTS |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| Surveillance Support | Yes | No | Yes | Yes | Yes |
| Use Case | Enterprise Data Center | Enterprise Data Center | SMB | Enterprise Data Center / Virtualization / SMB | SMB |
| Product Name | QNAP Enterprise Storage Solution RS3618xs | FS3600 Enterprise NAS Storage System | Synology DiskStation DS1817 | QNAP DS1621XS+ | DS1821+ |
| Height | 3.5 inches | 3.5 inches | 4.5 in | 10.9 inches | 9.8 inches |
| Width | 17.2 inches | 17.5 inches | 14.1 in | 17.2 inches | 17.5 inches |
| Depth | 29.5 inches | 28 inches | 12.8 in | 10.4 inches | 10.2 inches |
| Weight | 66 lbs | 45 lbs | 21.8 lbs | 25.7 lbs | 21.6 lbs |
Reviews & Ratings
B
Bennett Clay
5
Robust performance and excellent scalability. This unit provides the professional reliability our enterprise backup systems need.
A
Aria Preston
5
Excellent throughput for high-demand office networks. A trustworthy workhorse for managing our corporate data securely.
J
Jasper Finn
5
Superior build quality and stable operation. It handles our complex storage tasks with impressive efficiency.
W
Willa Kemp
4
High-performance NAS for professional environments. The 12-bay configuration offers perfect density and reliable uptime.
K
Killian Moss
5
Great reliability and throughput. Ideal for businesses requiring a powerful and scalable rackmount storage solution.
F
Frederick Vaughn
4
A dependable 12-bay workhorse for our business archives. The scalability is excellent, and it provides consistent high-speed data access for our busy production team.
G
Gemma Lowery
5
Outstanding performance in a rackmount form factor. We rely on this unit for our primary file server, and its uptime has been flawless for years.
H
Harlan Cross
5
Professional-grade storage with impressive throughput. It handles our intensive backup schedules easily and offers a robust set of management tools for our IT department.
I
Isolde Thorne
4
Reliable and powerful 12-bay NAS. It provides a secure and stable environment for our corporate data while allowing for easy storage expansion as needed.
J
Julian Hart
4
Superior build quality and dependable data protection. This RackStation is a central part of our infrastructure, offering high performance for all our office users.
Questions & Answers
What is the Synology RackStation RS3618xs diskless NAS?
The RS3618xs is a high-performance, 12-bay rackmount NAS without preinstalled drives, designed for scalable business storage and flexible deployment.
How many drive bays does the RS3618xs support?
The RS3618xs supports twelve 3.5″ or 2.5″ SATA HDDs/SSDs in its front-accessible bays.
Which processor and memory configuration does the RS3618xs include?
It is powered by an Intel Atom C3538 quad-core 2.1 GHz CPU with 4 GB DDR4 ECC RAM, expandable up to 32 GB.
Can I upgrade the memory on the RS3618xs?
Yes, the RS3618xs has two DIMM slots and supports up to 32 GB of DDR4 ECC memory for enhanced performance.
What is the maximum raw storage capacity of the RS3618xs?
By populating all twelve bays with 16 TB drives, you can achieve a maximum raw capacity of 192 TB, expandable with two DX1215 units.
Does the RS3618xs support SSD caching?
Yes, you can configure up to two M.2 NVMe SSDs via a compatible adapter card to boost random read/write performance.
Which network interfaces are included on the RS3618xs?
It features four 1 GbE RJ-45 ports and one expansion slot for additional 10 GbE or 25 GbE network cards.
What performance can I expect from the RS3618xs?
Under RAID 5, it delivers over 4,000 MB/s sequential throughput and up to 95,000 IOPS for small random reads.
What operating system does the RS3618xs use?
It runs Synology DiskStation Manager (DSM), offering a rich ecosystem of data management, backup, and virtualization apps.
Can the RS3618xs be used for virtualization?
Yes, DSM supports iSCSI, VMware vSphere, Microsoft Hyper-V, and Docker container applications for versatile virtual workloads.
How does the RS3618xs ensure data protection?
It offers RAID redundancy, snapshots, automated backups, AES-NI hardware encryption, and Btrfs file-level integrity protection.
Is the RS3618xs compatible with Synology expansion units?
Yes, you can connect up to two DX1215 expanders via dedicated ports to add 24 more drives for a total of 36 bays.
What are the power consumption and noise levels of the RS3618xs?
At full load it consumes 78 W and operates at 31.5 dB(A), ideal for standard server rooms or quiet office environments.
What security features are built into the RS3618xs?
It includes AES-Ni hardware encryption, 2-step verification, firewall, auto block, and Security Advisor for proactive threat protection.
How easy is the installation and setup of the RS3618xs?
Installation is tool-less for drives, and DSM’s web-based wizard delivers guided, five-minute setup with minimal IT expertise.
What warranty and support options are available for the RS3618xs?
Synology provides a standard three-year limited warranty with optional extensions up to five years and 24/7 online technical support.