UC3400

Active-active SAN for mission-critical environments

Dual Controller Module

Dual Controller Module

Ensure interruption-free iSCSI and FC services

High Performance

High Performance

Over 180,000 4K Random Write IOPS, and up to 576 TB of storage

Virtualization-ready

Virtualization-ready

Full support for mainstream virtualization systems

Reliability and High Availability

Active-active dual controllers work simultaneously to ensure zero downtime in the event of a controller failure while the non-transparent bridge (NTB) enables inter-domain communication to maximize the protection of in-flight data.

Active-Active SAN with enterprise-class performance

Designed for mission-critical environments, UC3400 is a high-availability SAN solution supporting Fibre Channel (FC) and iSCSI protocols. With over 180,000 4K random write IOPS,1 it supports a wide range of demanding workloads.

Random write Random mixed

Virtualization-ready

Full certification for VMware, vSphere, Microsoft Hyper-V, Citrix XenServer, and OpenStack environments

Support for Windows Offloaded Data Transfer (ODX), VMware vSphere Storage APIs Array Integration (VAAI), and ALUA ensure optimized and efficient storage operations

OpenStack® Cinder support enables UC3400 to become a block-based storage component

vmware
windows2022
citrix
openstack

Flexible network options

Boost network from 10GbE and dual 1GbE RJ-45 ports to 10/25 Gb Ethernet cards or 16 Gb Fibre channel host bus adapters on each controller.2

Flexible network options

Built-in data protection and security

Maximize service uptime for critical services and enhance data security with snapshot protection and self-encrypting drive support in UC3400.

Snapshot Replication
Self-encrypting drive support
Snapshot Replication
Self-encrypting drive support

Storage expansion

Simple capacity expansion of up to 576 TB of raw storage is available with two Synology RXD1219sas Expansion Units.3

Storage expansion

Performance backed by Synology drives

Leverage high sustained performance and reliability with enterprise-grade drives with built-in protection designed for Synology systems.4

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5-year warranty

5-year warranty

At Synology, we are committed to product innovation and quality. Synology guarantees a robust and reliable data management experience with a 5-year limited warranty, providing responsive technical support and hardware replacement services to maximize your return on investment.5 

UC3400

productUC3400front view photo
productUC3400back view photo
  • 1Power Button and Indicator
  • 2High Availability Status Indicator
  • 3Alert Indicator
  • 4Mute Button
  • 5Drive status indicators
  • 6Drive trays
  • 7Rail Kit Release Tabs
  • 8Power Ports
  • 9PSU indicators
  • 10PSU fans
  • 11PCI Express Expansion Slots
  • 12Console ports
  • 131GbE RJ-45 Ports
  • 1410GbE RJ-45 ports
  • 15Expansion Ports
  • 16Reset Buttons
  • 17Remove Indicators
  • 18Alert Indicators
  • 19Status Indicators
  • 20Power Indicators

Notes:

  1. Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.

  2. For the most up-to-date list of compatible NICs, please check our compatibility list

  3. UC3400 supports up to 36 drives with the addition of two Synology RXD1219sas expansion unit, sold separately.

  4. Check the compatibility list compatibility list for supported drives.

  5. The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.

Hardware Specifications
Controller
Controller
Number of Controller Module 2
CPU
CPU
CPU Model Intel Xeon D-1541
CPU Quantity 1 (per controller)
CPU Architecture 64-bit
CPU Frequency 8-core 2.1 (base) / 2.7 (turbo) GHz
Hardware Encryption Engine (AES-NI)
Memory
Memory
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)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
Storage
Storage
Drive Bays 12
Maximum Drive Bays with Expansion Unit 36 (RXD1219sas x 2)
Compatible Drive Type* (See all supported drives)
  • 2.5” dual-port SAS SSD
  • 3.5” dual-port SAS HDD
Hot Swappable Drive*
Notes
  • Synology only guarantees full functionality, reliability, and performance for Synology drives listed on the compatibility list. The use of non-validated components may limit certain functionality and result in data loss and system instability.
  • "Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.
External Ports
External Ports
RJ-45 1GbE LAN Port 2 (with Link Aggregation / Failover support) (per controller)
RJ-45 10GbE LAN Port 1 (per controller)
PCIe
PCIe
PCIe Expansion 1 x Gen3 x8 slot (x8 link) (per controller)
File System
File System
Internal Drives Btrfs
Appearance
Appearance
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
Others
Others
System Fan 60 mm x 60 mm x 2 (per controller)
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
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)
Notes
  • Noise Level Testing Environment: Fully loaded with Synology HAS5300-8T hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
  • Power consumption is measured when it is fully loaded with Synology 12TB HAS5300-12T hard drive(s).
Temperature
Temperature
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
Certification
Certification
  • CE
  • FCC
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • KC
  • EAC
Warranty
Warranty
5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
Environment
Environment
RoHS Compliant
Packaging Content
Packaging Content
  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Cord X 2
  • Quick Installation Guide X 1
Optional Accessories
Optional Accessories
Notes All memory modules will operate at the maximum frequency specified by the CPU manufacturer.
DSM UC Specifications
Storage Management
Storage Management
Maximum Single Volume Size
  • 200 TB (32 GB memory required)
  • 108 TB
Maximum Internal Volume Number 32
Maximum iSCSI Target Number 128
Maximum LUN 128
Advanced LUN (Clone/Snapshot) Support
Maximum Number of Snapshots per Advanced LUN 256
SSD Read / Write Cache (White Paper)
SSD TRIM
RAID Group
Supported RAID Type
  • RAID F1
  • Basic
  • JBOD
  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
RAID Migration
  • Basic to RAID 1
  • Basic to RAID 5
  • RAID 1 to RAID 5
Volume Expansion with Larger HDDs
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Volume Expansion by Adding a HDD
  • JBOD
  • RAID F1
  • RAID 5
  • RAID 6
Global Hot Spare Supported RAID Type
  • RAID F1
  • RAID 1
  • RAID 5
  • RAID 6
  • RAID 10
Notes Volumes over 108 TB require DSM UC 3.1.3-23076 or above and 32 GB of memory or more.
Account & Shared Folder
Account & Shared Folder
Maximum Local User Accounts 65
Virtualization
Virtualization
VMware ESXi 6.5 and VAAI
Windows Server 2022
Citrix Ready
OpenStack
Snapshot Replication
Snapshot Replication
Maximum Number of Replication 64
Maximum of System Snapshots 4,096
General Specifications
General Specifications
Networking Protocols
  • iSCSI
  • Telnet
  • SSH
  • SNMP
  • Fibre Channel
Supported Language English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, Русский, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Český, ภาษาไทย, 日本語, 한국어, 繁體中文, 简体中文

Notes:

  1. Model specifications are subject to change without prior notice.
  2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.