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Synology RackStation UC3400 12 Bay 2U Rackmount SAN Enclosure
The Synology UC3400 is a 2U, 12-bay dual-controller SAN designed for mission-critical, high-performance environments. With active-active controllers based on Intel Xeon D-1541 CPUs and ECC memory, it delivers over 180,000 4K random write IOPS (up to ~455K mixed IOPS over Fibre Channel), ensuring uninterrupted block storage via iSCSI or Fibre Channel. Fully virtualisation-ready, it supports VMware, Hyper-V, OpenStack Cinder, and comes with enterprise tools like Snapshot Replication, self-encrypting drive support, and high availability failover. The system includes hot-swappable power supplies, up to 576 TB expansion via RXD1219sas units, and flexible networking from built-in 10GbE/1GbE ports to optional 25GbE or Fibre Channel add-ons. Backed by Synology’s DiskStation Manager and a five-year warranty, the UC3400 brings pro-grade NAS scalability and resilience with minimal downtime.
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Hardware Specifications
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Controller
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Number of Controller Module | 2 |
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CPU
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CPU Model | Intel Xeon D-1541 |
| CPU Quantity | 1 (per controller) | |
| CPU Core | 8 | |
| CPU Architecture | 64-bit | |
| CPU Frequency | 2.1 (base) / 2.7 (turbo) GHz | |
| Hardware Encryption Engine | ||
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Memory
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System Memory | 8 GB DDR4 ECC UDIMM (per controller) |
| Memory Module Pre-installed | 8 GB (8 GB x 1) (per controller) | |
| Total Memory Slots | 4 (per controller) | |
| Maximum Memory Capacity | 64 GB (16 GB x 4) (per controller) | |
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Storage
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Drive Bays | 12 |
| Maximum Drive Bays with Expansion Unit | 36 (RXD1219sas x 2) | |
| Compatible Drive Type |
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| Hot Swappable Drive* | ||
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External Ports
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RJ-45 1GbE LAN Port | 2 (with Link Aggregation / Failover support) (per controller) |
| RJ-45 10GbE LAN Port | 1 (per controller) | |
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PCIe
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PCIe Expansion | 1 x Gen3 x8 slot (x8 link) (per controller) |
| Add-In-Card Support |
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System File
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Internal Drives | Btrfs |
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Appearance
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Size (Height x Width x Depth) | 88 mm x 430.5 mm x 692 mm |
| Size (Height x Width x Depth) (with server ears) | 88 mm x 482 mm x 724 mm | |
| Weight | 19.7 kg | |
| Rack Installation Support* | 4-post 19″ rack (Synology Rail Kit – RKS-02) | |
| Notes | The rail kit is sold separately | |
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Others
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System Fan | 60 mm x 60 mm x 2 (per controller) |
| Fan Speed Mode |
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| Easy Replacement System Fan | ||
| Power Recovery | ||
| Noise Level* | 51.3 dB(A) | |
| Power Supply Unit / Adapter | 500W | |
| Redundant Power Supply | ||
| AC Input Power Voltage | 100 V to 240 V AC | |
| Power Frequency | 50/60Hz, Single Phase | |
| Power Consumption | 239.25 W (Access) | |
| British Thermal Unit | 816.35 BTU/hr (Access) | |
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Temperature
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Operating Temperature | 0°C to 35°C (32°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Relative Humidity | 5% to 95% RH | |
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Certification
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Warranty
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5 Years | |
| Notes | The warranty period starts from the purchase date as stated on your purchase receipt | |
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Environment
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RoHS Compliant | |
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Packaging Content
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Optional Accessories
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| Notes | All memory modules will operate at the maximum frequency specified by the CPU manufacturer. | |
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