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DS1621XS+
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- Synology DiskStation DS1621xs+ - NAS - Desktop - Intel® Xeon® D - D-1527 - Black (DS1621XS+)
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3 Year Extended Warranty
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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.
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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.
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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.
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Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
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DS1621XS+ Overview
DS1621XS+ is a high-performance NAS featuring 6 drive bays that support SATA HDD and SATA SSD, delivering a total storage capacity of up to 96 TB. It supports RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 configurations and is powered by an Intel Xeon processor with 4 cores, paired with 8 GB of pre-installed ECC DDR4 memory that is expandable up to 32 GB.
DS1621XS+ offers dual 10GbE network ports and USB 3.2 connectivity with hot-swap drive support and expansion capabilities for additional storage. It is equipped with active, redundant fan cooling and a redundant power supply rated at 350W, making it ideal for SMB backup, enterprise data centers, virtualization, and media server use cases.
What is the price of DS1621XS+?
Pricing for DS1621XS+ is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for DS1621XS+.
Explore more options from Storage or explore other Synology products.
DS1621XS+ Specifications
| Product Type | Storage System |
| Storage Type | NAS |
| Form Factor | Rackmount |
| Bay Count | 6-bay |
| Supported Drive Types | Mixed |
| Hot-Swap Support | Yes |
| Max Supported Capacity | 96 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon |
| CPU Cores | 4 |
| Installed RAM | 8 GB |
| Max RAM Capacity | 32 GB |
| RAM Type | ECC DDR4 |
| Network Ports | 10GbE |
| LAN Ports | 2 |
| USB Ports | USB 3.2 |
| Expansion Support | Yes |
| Cooling | Redundant Fan |
| Power Supply | Redundant |
| Power Supply Wattage | 350W |
| Operating System | QTS |
| Snapshot Support | Yes |
| Cloud Sync Support | Yes |
| Virtualization Ready | Yes |
| ISCSI Support | Yes |
| Surveillance Support | Yes |
| Use Case | Enterprise Data Center / Virtualization / SMB |
| Product Name | QNAP DS1621XS+ |
| Height | 10.9 inches |
| Width | 17.2 inches |
| Depth | 10.4 inches |
| Weight | 25.7 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Bay Count | 6-bay | 12-bay | 8-bay | 16-bay | 12-bay |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan | Redundant Fan |
| CPU Cores | 4 | 8 | 4 | 8 | 8 |
| CPU Type | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon | Intel Xeon |
| Depth | 10.4 inches | 28 inches | 28.0 inches | 28.7 inches | 28 inches |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | Rackmount |
| Height | 10.9 inches | 3 inches | 3.5 inches | 3.5 inches | 4 inches |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Installed RAM | 8 GB | 16 GB | 8 GB | 8 GB | 16 GB |
| iSCSI Support | Yes | Yes | Yes | Yes | Yes |
| LAN Ports | 2 | 2 | 2 | 4 | 2 |
| Max RAM Capacity | 32 GB | 64 GB | 64 GB | 32 GB | 64 GB |
| Max Supported Capacity | 96 TB | 1 PB | 256 TB | 256 TB | 1 PB |
| Network Ports | 10GbE | 10GbE | 1GbE | 10GbE | 10GbE |
| Operating System | QTS | Custom OS | QTS | Custom OS | Custom OS |
| Power Supply | Redundant | Redundant | Redundant | Redundant | Redundant |
| Power Supply Wattage | 350W | 500W | 350W | 350W | 500W |
| Product Name | QNAP DS1621XS+ | FS6400 Unified Storage System | RS820+ | RS2818RP+ Rackmount Storage System | RX1216SAS |
| 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 / RAID 5 / RAID 6 / RAID 10 | 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 |
| RAM Type | ECC DDR4 | ECC DDR4 | ECC DDR4 | ECC DDR4 | DDR4 |
| Snapshot Support | Yes | Yes | Yes | Yes | Yes |
| Storage Type | NAS | SAN | NAS | NAS | SAN |
| Supported Drive Types | Mixed | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | Mixed | Mixed |
| Surveillance Support | Yes | Yes | Yes | No | No |
| USB Ports | USB 3.2 | USB 3.2 | USB 3.0 | USB 3.2 | USB 3.0 |
| Use Case | Enterprise Data Center / Virtualization / SMB | SMB Backup / Enterprise Data Center / Media Server / Virtualization | Enterprise Data Center | Enterprise Data Center | Enterprise Data Center |
| Virtualization Ready | Yes | Yes | Yes | Yes | Yes |
| Weight | 25.7 lbs | 45 lbs | 35 lbs | 40 lbs | 35 lbs |
| Width | 17.2 inches | 17 inches | 17.5 inches | 17.2 inches | 17 inches |
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Questions & Answers
Q
What is the Synology DiskStation DS1621xs+ (DS1621XS+)?
A
The Synology DiskStation DS1621xs+ is a high-performance 6-bay desktop NAS powered by an Intel® Xeon® D-1527 processor, designed for business-grade storage, virtualization, and data protection.
Q
Which processor does the DS1621xs+ use?
A
The DS1621xs+ features an Intel® Xeon® D-1527 quad-core 2.2 GHz processor with Turbo Boost up to 2.7 GHz for reliable multi-tasking and virtualization workloads.
Q
How much RAM is included and can it be expanded?
A
The DS1621xs+ ships with 8 GB DDR4 ECC RAM, expandable up to 32 GB via two SO-DIMM slots to optimize performance for demanding applications.
Q
What drive bays and capacities does the DS1621xs+ support?
A
The DS1621xs+ offers six 3.5"/2.5" SATA drive bays supporting up to 108 TB raw capacity (18 TB drives), with expansion up to 256 TB using two DX517 expansion units.
Q
Can I install SSDs for caching on the DS1621xs+?
A
Yes. The DS1621xs+ has two built-in M.2 2280 NVMe SSD slots for cache acceleration, improving I/O performance without occupying drive bays.
Q
What network connectivity options does the DS1621xs+ provide?
A
The DS1621xs+ includes four 1 GbE LAN ports with failover and Link Aggregation support, plus a built-in 10 GbE SFP+ port for high-speed network environments.
Q
How does the DS1621xs+ perform in real-world benchmarks?
A
In RAID 5 configuration, the DS1621xs+ delivers up to 2,356 MB/s sequential read and 1,167 MB/s sequential write throughput for intensive file services.
Q
Which operating system runs on the DS1621xs+?
A
The DS1621xs+ runs Synology DiskStation Manager (DSM), offering an intuitive web interface, comprehensive apps, and regular updates for security and features.
Q
What data protection features are available?
A
The DS1621xs+ supports real-time Btrfs snapshots, multi-version backup, Snapshot Replication, Synology Hybrid RAID, and AES-NI hardware encryption for end-to-end data safety.
Q
Is the DS1621xs+ suitable for virtualization?
A
Yes. The DS1621xs+ is certified for VMware, Citrix, and Microsoft Hyper-V, supporting iSCSI with high IOPS and consistent low latency for virtual machines.
Q
What business applications does DSM include?
A
DSM on the DS1621xs+ offers business packages including Synology Drive, Active Backup Suite, MailPlus, Calendar, and Docker for versatile enterprise deployments.
Q
How is power consumption managed on the DS1621xs+?
A
The DS1621xs+ features a 250 W power supply with scheduled hibernation, standby modes, and fan operation control, consuming as little as 43.4 W during typical workloads.
Q
What warranty and support does Synology offer?
A
The DS1621xs+ includes a 5-year limited warranty and optional extended coverage, backed by Synology’s global support network for hardware replacement and technical assistance.
Q
Can I expand storage beyond six bays?
A
Yes. You can connect up to two Synology DX517 expansion units via eSATA, adding 10 additional bays for a combined total of 16 drives.
Q
What are the physical dimensions and noise levels?
A
The DS1621xs+ measures 282 × 243 × 166 mm, weighs 5.17 kg, and operates at 20.8 dB(A) in low-speed cooling mode, ensuring quiet office deployment.
Q
Which cloud services integrate with the DS1621xs+?
A
The DS1621xs+ supports hybrid cloud solutions including Synology C2, Amazon S3, Google Drive, Microsoft OneDrive, and Dropbox for offsite backup and sync capabilities.
