United States
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
RS3621XS+
Original Stock
Ready to Ship
SYNOLOGY 12BAY RACKSTATION RS3621XS+ DISKLESS
FEATURED DEAL
Featured Deal
Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
RS3621XS+
- Description:
- SYNOLOGY 12BAY RACKSTATION RS3621XS+ DISKLESS
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Synology
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
100% Genuine Guaranteed
Global Delivery
Business Terms / PO Accepted
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
Built Global. Stocked Local.
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
4Global Offices
25+Distribution Points
100+Countries Served
Buyer Protection on Every Order
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Verified By Federal Bodies
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
- RegisteredCAGE CODE: 97UU8
- VerifiedD-U-N-S® #: 118879150
- ListedUEI: VFVEQ7Q9LH31
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
10+Years Operating
20,000+Clients Served
150K+SKUs Available
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.
RS3621XS+ price is is available on request. Get immediate quote.
Request bulk order quote for RS3621XS+ for additional pricing. Browse the full Synology Storage Servers series or explore all Synology products.
RS3621XS+ Specifications
- Product Type
- Storage System
- Brand
- Synology
- 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
Speak To a Hardware Specialist in Your Region
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
Product Comparison Table 
| RS3621XS+ |  DS1621+ |  DS218PLAY |  RS2418RP+ |  VS360HD | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | NAS | NAS | NAS | NAS |
| Form Factor | Rackmount | Desktop | Desktop | Rackmount | Rackmount |
| Bay Count | 36-bay | 6-bay | 2-bay | 24-bay | 16-bay |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | SATA HDD / SATA SSD | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 1 PB | 96 TB | 32 TB | 192 TB | 512 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / JBOD | RAID 0 / RAID 1 / JBOD | 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 |
| CPU Type | Intel Xeon | AMD Ryzen | Realtek | Intel Xeon | Intel Xeon |
| CPU Cores | 8 | 4 | 4 | 4 | 8 |
| Installed RAM | 16 GB | 4 GB | 2 GB | 8 GB | 16 GB |
| Max RAM Capacity | 128 GB | 32 GB | 4 GB | 128 GB | 128 GB |
| RAM Type | ECC DDR4 | ECC DDR4 | DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 1GbE | 1GbE | 10GbE | 10GbE |
| LAN Ports | 4 | 4 | 1 | 2 | 2 |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.0 | USB 3.0 | USB 3.2 |
| Expansion Support | Yes | Yes | No | Yes | Yes |
| Cooling | Redundant Fan | Active | Active | Active | Redundant Fan |
| Power Supply | Redundant | Single | Single | Redundant | Redundant |
| Operating System | Custom OS | QTS | QTS | QTS | Custom OS |
| 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 | No | Yes | Yes | Yes | No |
| Use Case | Enterprise Data Center / Virtualization / Media Server / SMB | SMB / Enterprise Data Center / Media Server / Virtualization | SMB / Media Server | Enterprise Data Center | Enterprise Data Center |
| Product Name | RS3621XS+ | QNAP TS-DS1621+ | TS-DS218PLAY | QNAP TS-RS2418RP+ | VS360HD Storage System |
| Height | 3.5 | 6.81 inches | 6.6 inches | 4.4 inches | 3.5 inches |
| Width | 17.3 | 9.06 inches | 4.0 inches | 17.3 inches | 17.3 inches |
| Depth | 28.5 | 12.01 inches | 8.9 inches | 28.9 inches | 28.7 inches |
| Weight | 85 | 14.3 lbs | 4.0 lbs | 66 lbs | 35 lbs |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
D
Damian Cole
4
Powerful 12-bay RackStation for enterprise storage. The Xeon processor handles our intensive virtualization and database workloads with ease.
E
Esme Ward
5
Superior scalability and high-speed performance. This unit provides the professional reliability and massive capacity our growing data center requires.
J
Jasper Finn
5
Exceptional build quality and rock-solid stability. A top-tier NAS solution for businesses needing high-performance storage and reliable data protection.
W
Willa Kemp
5
Robust hardware that delivers impressive throughput. It consistently handles multiple simultaneous tasks without any compromise on system speed.
K
Killian Moss
5
Outstanding 12-bay capacity for large archives. The RS3621XS+ is a trustworthy workhorse for mission-critical enterprise storage and backups.
T
Thea Dalton
4
Professional grade rackmount NAS with high-end features. It offers predictable performance and excellent longevity for our corporate network infrastructure.
A
Arthur Briggs
5
Impressive speed and massive storage density. The ultimate choice for businesses requiring a high-performance and reliable 12-bay storage solution.
Questions & Answers
What is the Synology RS3621xs+ and what does “diskless” mean?
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.
How many hard drives can I install in the RS3621xs+?
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.
What is the maximum raw storage capacity supported?
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.
Which RAID configurations are available?
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.
What CPU and memory are included, and can I upgrade them?
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).
What network interfaces and throughput does it offer?
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.
Is the RS3621xs+ suitable for virtualization workloads?
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.
Does it support data encryption?
Yes. The RS3621xs+ offers AES-NI hardware encryption for shared folders and volumes, ensuring secure data at rest with minimal performance impact.
What backup solutions are compatible with this NAS?
Synology Active Backup for Business, Hyper Backup, Snapshot Replication, and Cloud Sync are all supported, providing comprehensive on-premises and cloud backup strategies.
How do I perform the initial setup of the RS3621xs+?
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.
What operating system does the RS3621xs+ run?
It runs DiskStation Manager (DSM), Synology’s intuitive Linux-based OS that includes file services, virtualization, multimedia, and advanced security features.
Can I use third-party drives with the RS3621xs+?
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.
How do I expand storage beyond 12 bays?
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.
What power consumption can I expect?
In typical operation with four HDDs installed, the RS3621xs+ consumes approximately 70 W. Power-saving features such as HDD hibernation further reduce energy usage.
How does Synology ensure data protection and recovery?
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.
What warranty and support options are available?
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.