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RS3621XS+
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- SYNOLOGY 12BAY RACKSTATION RS3621XS+ DISKLESS
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3 Year Extended Warranty
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Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
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Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
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Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
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Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
RS3621XS+ Overview
RS3621XS+ is an enterprise-class SAN designed as a 36-bay storage system supporting SATA HDD, SAS HDD, SATA SSD, and NVMe SSD drive types. It offers a total storage capacity of up to 1 PB with RAID configurations including RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10, powered by an Intel Xeon processor featuring 8 cores and pre-installed 16 GB of ECC DDR4 memory, upgradeable to a maximum of 128 GB for robust performance.
RS3621XS+ delivers high-speed connectivity with 10GbE network ports, 4 LAN ports, and USB 3.2 interfaces, while also providing expansion capabilities for additional storage. Its redundant power supply rated at 750W and redundant fan cooling ensure reliability and uptime, making it ideal for use cases such as SMB backup, enterprise data centers, virtualization, and media server applications.
What is the price of RS3621XS+?
Pricing for RS3621XS+ is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for RS3621XS+.
Explore more options from Storage or explore other Synology products.
RS3621XS+ Specifications
| Product Type | Storage System |
| Storage Type | SAN |
| Form Factor | Rackmount |
| Bay Count | 36-bay |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD / NVMe SSD |
| Hot-Swap Support | Yes |
| Max Supported Capacity | 1 PB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon |
| CPU Cores | 8 |
| Installed RAM | 16 GB |
| Max RAM Capacity | 128 GB |
| RAM Type | ECC DDR4 |
| Network Ports | 10GbE |
| LAN Ports | 4 |
| USB Ports | USB 3.2 |
| Expansion Support | Yes |
| Cooling | Redundant Fan |
| Power Supply | Redundant |
| Power Supply Wattage | 750W |
| Operating System | Custom OS |
| Snapshot Support | Yes |
| Cloud Sync Support | Yes |
| Virtualization Ready | Yes |
| ISCSI Support | Yes |
| Surveillance Support | No |
| Use Case | Enterprise Data Center / Virtualization / Media Server / SMB |
| Product Name | RS3621XS+ |
| Height | 3.5 |
| Width | 17.3 |
| Depth | 28.5 |
| Weight | 85 |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Bay Count | 36-bay | 2-bay | 6-bay | 16-bay | 24-bay |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Redundant Fan | Active | Active | Redundant Fan | Active |
| CPU Cores | 8 | 4 | 4 | 8 | 4 |
| CPU Type | Intel Xeon | Realtek | AMD Ryzen | Intel Xeon | Intel Xeon |
| Depth | 28.5 | 8.9 inches | 12.01 inches | 28.7 inches | 28.9 inches |
| Expansion Support | Yes | No | Yes | Yes | Yes |
| Form Factor | Rackmount | Desktop | Desktop | Rackmount | Rackmount |
| Height | 3.5 | 6.6 inches | 6.81 inches | 3.5 inches | 4.4 inches |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Installed RAM | 16 GB | 2 GB | 4 GB | 16 GB | 8 GB |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| LAN Ports | 4 | 1 | 4 | 2 | 2 |
| Max RAM Capacity | 128 GB | 4 GB | 32 GB | 128 GB | 128 GB |
| Max Supported Capacity | 1 PB | 32 TB | 96 TB | 512 TB | 192 TB |
| Network Ports | 10GbE | 1GbE | 1GbE | 10GbE | 10GbE |
| Operating System | Custom OS | QTS | QTS | Custom OS | QTS |
| Power Supply | Redundant | Single | Single | Redundant | Redundant |
| Power Supply Wattage | 750W | N/A | 250W | 500W | 750W |
| Product Name | RS3621XS+ | TS-DS218PLAY | QNAP TS-DS1621+ | VS360HD Storage System | QNAP TS-RS2418RP+ |
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD |
| RAM Type | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Storage Type | SAN | NAS | NAS | NAS | NAS |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | SATA HDD / SATA SSD | Mixed | Mixed | Mixed |
| Surveillance Support | No | Yes | Yes | No | Yes |
| USB Ports | USB 3.2 | USB 3.0 | USB 3.2 | USB 3.2 | USB 3.0 |
| Use Case | Enterprise Data Center / Virtualization / Media Server / SMB | SMB / Media Server | SMB / Enterprise Data Center / Media Server / Virtualization | Enterprise Data Center | Enterprise Data Center |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 85 | 4.0 lbs | 14.3 lbs | 35 lbs | 66 lbs |
| Width | 17.3 | 4.0 inches | 9.06 inches | 17.3 inches | 17.3 inches |
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Questions & Answers
Q
What is the Synology RS3621xs+ and what does “diskless” mean?
A
The Synology RS3621xs+ is a 12-bay rackmount NAS designed for enterprise use. “Diskless” means it ships without hard drives, allowing you to choose and install the drives that best fit your capacity and performance needs.
Q
How many hard drives can I install in the RS3621xs+?
A
The RS3621xs+ has 12 drive bays that support 2.5” or 3.5” SATA HDDs and SSDs. You can also expand up to 36 drives by connecting two DX1215 expansion units.
Q
What is the maximum raw storage capacity supported?
A
With 12 bays and 18 TB drives, the RS3621xs+ supports up to 216 TB of raw storage. Using two DX1215 expansions, total raw capacity can exceed 648 TB.
Q
Which RAID configurations are available?
A
It supports RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, JBOD, and Synology Hybrid RAID (SHR) for flexible protection and efficient space usage.
Q
What CPU and memory are included, and can I upgrade them?
A
The RS3621xs+ is powered by an AMD Ryzen V1500B quad-core 2.2 GHz CPU and 4 GB DDR4 ECC RAM (expandable to 32 GB via two SODIMM slots).
Q
What network interfaces and throughput does it offer?
A
It includes four 1 GbE ports by default. Optional 10 GbE RJ-45 or 25 GbE SFP28 network cards are available to boost throughput and support link aggregation.
Q
Is the RS3621xs+ suitable for virtualization workloads?
A
Yes. With its high-performance CPU, ECC memory, and iSCSI support, it’s ideal for VMware, Hyper-V, and Citrix environments, offering high IOPS and low latency.
Q
Does it support data encryption?
A
Yes. The RS3621xs+ offers AES-NI hardware encryption for shared folders and volumes, ensuring secure data at rest with minimal performance impact.
Q
What backup solutions are compatible with this NAS?
A
Synology Active Backup for Business, Hyper Backup, Snapshot Replication, and Cloud Sync are all supported, providing comprehensive on-premises and cloud backup strategies.
Q
How do I perform the initial setup of the RS3621xs+?
A
Install your drives, connect to your network, power on, and launch Synology Assistant or navigate to find.synology.com in a browser. Follow the DSM setup wizard to configure volumes and services.
Q
What operating system does the RS3621xs+ run?
A
It runs DiskStation Manager (DSM), Synology’s intuitive Linux-based OS that includes file services, virtualization, multimedia, and advanced security features.
Q
Can I use third-party drives with the RS3621xs+?
A
Yes. The RS3621xs+ is compatible with industry-standard 2.5”/3.5” SATA HDDs and SSDs. For best reliability, refer to Synology’s compatibility list before purchase.
Q
How do I expand storage beyond 12 bays?
A
Connect up to two DX1215 expansion units using the dedicated eSATA ports to add 12 bays each, for a total of 36 bays under one volume and management interface.
Q
What power consumption can I expect?
A
In typical operation with four HDDs installed, the RS3621xs+ consumes approximately 70 W. Power-saving features such as HDD hibernation further reduce energy usage.
Q
How does Synology ensure data protection and recovery?
A
Synology offers point-in-time Snapshot Replication, continuous data protection, and built-in Btrfs file-system support with integrity checks, self-healing, and rapid rollback.
Q
What warranty and support options are available?
A
The RS3621xs+ includes a 5-year limited warranty. Synology offers optional extended warranty, advanced replacement, and 24/7 technical support through its global network of partners.
