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FS3400
FlashStation FS3400 - NAS - Rack (2U) - Intel® Xeon® D - D-1...
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FS3400 is a NAS featuring 4 drive bays that support SATA HDD, SAS HDD, SATA SSD, and NVMe SSD drives with a total storage capacity of 256 TB. It supports RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 and is powered by an Intel Xeon processor with 8 cores, pre-installed with 16 GB DDR4 memory that can be expanded to 64 GB, while offering interfaces including USB 3.1 and 10GbE Ethernet.
FS3400 includes expansion support, hot-swap drive capability, a redundant power supply rated at 500W, active cooling, and built-in redundancy to meet the demands of SMB backup, enterprise data centers, virtualization, and media server use cases.
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To get the detailed certification, please go to the Compliance Center.
| FS3400 |  DS420+ |  RS2421+ |  RS422+ |  DS923+ | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | NAS | NAS | NAS | SAN | NAS |
| Form Factor | Rackmount | Desktop | Rackmount | Rackmount | Desktop |
| Bay Count | 4-bay | 4-bay | 12-bay | 12-bay | 4-bay |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | Mixed |
| Hot-Swap Support | Yes | Yes | Yes | Yes | Yes |
| Max Supported Capacity | 256 TB | 64 TB | 192 TB | 512 TB | 64 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 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 |
| CPU Type | Intel Xeon | Intel Celeron | AMD Ryzen | Intel Xeon | AMD Ryzen |
| CPU Cores | 8 | 4 | 4 | 8 | 4 |
| Installed RAM | 16 GB | 4 GB | 8 GB | 16 GB | 4 GB |
| Max RAM Capacity | 64 GB | 8 GB | 64 GB | 64 GB | 32 GB |
| RAM Type | DDR4 | DDR4 | DDR4 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 1GbE | 10GbE | 10GbE | 2.5GbE |
| LAN Ports | 2 | 2 | 2 | 4 | 2 |
| USB Ports | USB 3.1 | USB 3.0 | USB 3.2 | USB 3.2 | USB 3.2 |
| Expansion Support | Yes | Yes | Yes | Yes | Yes |
| Cooling | Active | Active | Redundant Fan | Active | Active |
| Power Supply | Redundant | Single | Redundant | Redundant | Single |
| Power Supply Wattage | 500W | 250W | 350W | 500W | 150W |
| Operating System | Custom OS | QTS | QTS | Custom OS | 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 | No | Yes | Yes | No | Yes |
| Use Case | SMB / Enterprise Data Center / Media Server / Virtualization | SMB | SMB / Enterprise Data Center / Virtualization / Media Server | SMB / Enterprise Data Center / Virtualization / Media Server | SMB |
| Product Name | FS3400 High-Performance NAS Storage System | DS420+ | RS2421+ | RS422+ Enterprise Storage System | QNAP DS923+ |
| Height | 3.5 inches | 3.7 inches | 3.5 inches | 3 inches | 6.61 inches |
| Width | 17.5 inches | 8.7 inches | 17.3 inches | 17 inches | 8.74 inches |
| Depth | 25.0 inches | 10.2 inches | 28 inches | 25 inches | 9.06 inches |
| Weight | 30 lbs | 12 lbs | 44 lbs | 35 lbs | 6.5 lbs |
Elite all-flash RackStation with Xeon power. Delivers incredible IOPS and low latency for our virtualization tasks.
Exceptional 24-bay flash performance. Provides the professional speed and reliability our high-demand database applications require daily.
Robust hardware with top-tier stability. The FS3400 is a trustworthy solution for performance-sensitive enterprise storage.
Superior throughput and mission-critical uptime. It handles our high-traffic business network with impressive professional speed.
Powerful flash server for large-scale data. Consistent reliability and industry-leading performance for our entire corporation.
Outstanding flash storage density. It delivers high-speed data access and absolute system stability for our team.
The FlashStation FS3400 is a 2U rackmount all-flash NAS powered by an 8-core Intel® Xeon® D-1541 processor, supports up to 24 2.5" U.2 NVMe SSDs, 64GB DDR4 ECC memory (expandable to 512GB), dual 10GbE SFP+ ports, dual 1GbE RJ-45 ports, and redundant 800W Titanium-level power supplies.
The FS3400 supports up to 24 U.2 NVMe SSDs, delivering raw capacities up to 153.6TB per system, and can be expanded via compatible expansion units to scale beyond 1PB.
With an Intel® Xeon® D-1541 CPU, NVMe flash drives, and dual 10GbE SFP+ ports, the FS3400 delivers up to 1.5 million IOPS and 14GB/s throughput for demanding workloads.
The FS3400 supports RAID 0, 1, 5, 6, 10, 50, and 60, plus Synology’s proprietary Adaptive RAID for flexible disk management and data protection.
Yes, the FS3400 is certified for VMware® vSphere, Microsoft® Hyper-V, Citrix® XenServer, and supports NFS/SMB for virtual machine storage, plus iSCSI for block-level access.
The FS3400 offers AES-NI hardware-accelerated 256-bit volume encryption, antivirus integration, firewalls, and secure protocols (LDAPS, HTTPS, SSH) to protect data at rest and in transit.
The FS3400 runs Synology DiskStation Manager (DSM), a Linux-based OS with an intuitive web interface, built-in backup, file sharing, and container management tools.
DSM offers Snapshot Replication, Hyper Backup, Active Backup Suite, and cloud sync (Amazon S3, Azure, Google Cloud), enabling point-in-time recovery, offsite backup, and multi-version protection.
Standard FS3400 models include dual 10GbE SFP+ ports and dual 1GbE RJ-45 ports. Optional 25/40/100GbE network cards are available via PCIe Gen3 x8 expansion slots.
Manage FS3400 via DSM’s web console, Synology Mobile apps, CLI (SSH), or Synology Active Insight for real-time monitoring, alerts, and predictive analytics.
The FS3400 measures 88 × 482 × 650 mm (H×W×D), consumes 250W under typical load, and includes dual 800W redundant 80 PLUS Titanium power supplies.
Yes, the FS3400’s high IOPS and throughput support real-time 4K/8K video editing, large file transfers, and collaborative workflows in creative studios.
The FS3400 integrates with AWS, Microsoft Azure, Google Cloud, Backblaze B2, and other S3-compatible services for hybrid cloud, tiered storage, and disaster recovery.
The FS3400 comes with a 5-year limited warranty, extendable to 5+ years with optional Premium Support Plus for next-business-day replacement and 24/7 technical assistance.
You can attach Synology Expansion Unit RX1217(RP) or RX1217(RP) for additional 12 drive bays, managed as a single volume via Synology Expansion DSM.
The FS3400 uses four front hot-swappable 80×80×38mm fans, maintains operating temperature between 5–35°C, and runs at 33.4 dBA under typical load.
United States