TerraMaster U4-211 Enterprise-Class 4-Bay Networked Storage Server

Highly scalable storage server, designed to meet the requirements of enterprise virtualization, data-intensive applications and service continuity. Featuring Intel Atom C3538 2.1 GHz quad-core processor, 4GB DDR4L, 2 Gigabit network interfaces. Designed for flexible storage management, it offers over 100000IOPS and 200MB per second continuous storage.
Manufacturer: TerraMaster
SKU: NAS-U4-211
Manufacturer part number: U4-211
$999.00

High Scalability

Configure two DDR4 slots to support up to 8GB of memory modules with total memory up to 16GB; configure one PCIe X16 slot expansion slots for expansion of 10 Gigabit network cards (2 SFP + ports) and hard array RAID cards.

SSD cache technology

Hard disks, though large in capacity and cost-effective, are not as fast as SSDs. The use of SSD cache technology in hard disk arrays will optimize the response speed when accessing data and improve transmission performance by about 25%.

Easy management, security and worry-free

TOS enterprise version provides a graphical interface that allows you to flexibly manage user accounts and storage space, and provides you with tight server security and optimized storage space management. Alert notifications can be sent to keep you informed of server status.

Diversified professional applications

Enterprise version of the TOS operating system provides a wide range of professional applications. One TNAS device is better than dozens of devices, such as: file servers, mail servers, web servers, VPN servers, DHCP servers, DNS servers, Rsync remote servers, FTP servers and MySQL servers.

File management is easy and simple

In addition to using the network disk mapping function, you can also access files in TNAS through the web, directly drag and drop files from your computer to the File Explorer to upload files to the NAS. If you want to download files, just simply click "Download" to finish. The tree structure of the storage directory allows you to quickly master the data structure, copy / move / compress / unzip / unzip files for you!

Share files securely and conveniently

TOS supports a full range of SMBs, AFP, NFS, ISCSI, and FTP file services. Share files on any device, as intuitive as accessing folders on your computer, making file access and sharing easy.

Complete rights management

TNAS can share storage space for multiple users, support up to 1000 + user access, adopt RBAC rights management and Windows ACL, and can set access rights according to users, user groups and folders.

Tight security

TOS provides a variety of strict security means, such as: password login, https access, firewall, at the same time support AES256-bit disk encryption security protection mechanism, to prevent hard disk theft or loss of data generated by the risk of leakage.

Server clusters

Using a server cluster, merge two TNAS into one cluster, with one server serving as a work activity server and the other as a standby passive server. The active server processes data requests and services while continuously replicating all content to the passive server. This provides a comprehensive hardware and data redundancy solution in the event of an accident.

A variety of free applications

The TOS Application Center offers dozens of applications free of charge, covering the types of tools, services, databases, multimedia, and so on. You can choose to install them according to your needs.

More possibilities

Docker is a lightweight software containerization solution supported by Docker Inc. TerraMaster lets you run thousands of containers created on TOS by developers around the world by leveraging this advanced technology. Docker Hub uses an extensive built-in image repository that lets you find shared applications from other good developers.

Centralized storage, smart backup

You can backup the data of Mac, PC, USB external device and server to TNAS for centralized management. TerraMaster backup application supports data deduplication and incremental backup technology, greatly reducing storage space consumption.

Remote access

TNAS.online is a highly efficient remote access platform unique to TerraMaster. By registering a commonly used and easy to remember ID, you can remotely access your TNAS devices anytime, anywhere.

ISCSI disk mount

Mount virtual disks via ISCSI to expand storage space for TNAS servers and improve storage space management and utilization efficiency.

Next-generation format file system

TNAS server supports Btrfs file system. Btrfs file system uses more advanced storage technology, through snapshot, rollback, defragmentation and other functions, can prevent data corruption, reduce maintenance costs, make your data storage more secure.

Multiple backup methods

Support Time Machine backup, USB external storage backup and Rsync remote backup, effectively protect your data security.

A variety of RAID mode

Support RAID 0, RAID 1, RAID 5, RAID 6, JBOD, SINGLE a variety of disk array mode, can meet a variety of user applications, data security more secure.

Processor  
Processor Model Intel Atom C3538
Processor Architecture X.86 64-bit
Processor Frequency Quad Core 2.1GHz 
Hardware Encryption Engine
Hardware Transcoding Engine H.265 (HEVC), MPEG-4 Part 2, MPEG-2, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 30
Memory  
System Memory 4GB 
Pre-installed Memory module 4GB (1 x 4GB)
Total Memory Slot Number 2
Maximum Supported Memory 16 GB (2 *8GB)
Note TerraMaster 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.
Storage  
Disk Slot Number 4
Compatible Drive types 3.5" SATA HDD/3.5" SAS HDD
  2.5" SATA HDD
  2.5" SATA SSD
Maximum Internal Raw Storage Capacity 56TB (12TB x 4) (Capacity may vary by RAID types)
Max Single Volume 108TB
Drive Hot Swap
Note . Hard drive vendors will release their latest models of hard drives, and Maximum internal raw storage capacity may be adjusted accordingly.
. The maximum single volume size is not directly related to the maximum raw capacity.
File System  
Internal Drive Btrfs, EXT4
External Drive EXT3, EXT4, NTFS, FAT32, HFS+
External Ports  
RJ-45 1GbE Network Jack 2
USB 3.0 Port 2
COM 1
PCIe Slots 1 x PCIe X16 slot(PCIe 3.0 X2)
   
Appearance  
Size (H*W*D) 440 x 664 x 45  mm
Packaging Size (H*W*D) 795 x 575 x 185 mm  
Weight  
Others  
System Fan 40 mm x 40 mm x56 mm  3 pcs
Fan Mode Smart, High speed, Middle speed, Low speed
Noise Level  
Power Supply 250W
AC Input Voltage 100V - 240V AC
Current Frequency 50/60 Hz, Single frequency
Power Consumption 50.6W (read & write)
  5.0W  (hard drive dormancy)
Limited warranty 3 years
Certificate FCC, CE, CCC, KC
Environment RoHS, WEEE
Temperature  
Working Temperature 5°C  ~ 40°C (40°F ~ 104°F)
Storage Temperature -20°C ~ 60°C (-5°F ~ 140°F)
Relative Humidity 5% ~ 95% RH
Package Contents  
  Host (x1)
  Power cord (x1)
  RJ-45 network cable (x1)
  Quick Installation Guide (x1)
  Limited Warranty Note(x1)
  Screws

Here's What Our Customers Have To Say About Us

PC PitStop logoWe've been selling computer storage online since 1999 and have built a loyal following of Fortune 500 companies, educational institutions, government agencies, multimedia studios, consultants, you name it.

Our mission is to be competitive on selection and prices, while providing truly unmatched personal service. Everyone you reach here has in-depth experience with RAID storage. This means we can provide real-world insight into topics like performance, compatibility, bang for the buck, and the best solution for your needs.

PC PitStop | 16321 Westwoods Business Park | Ellisville, MO 63021
Toll Free: (800) 298-4173 | Local: (636) 527-5924
Hours: Monday to Friday, 9AM - 5PM CST | Email: [email protected]