TerraMaster
U4-111 (4Bays)

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U4-111 (4Bays)
U4-111

TerraMaster
U4-111 (4Bays)

Enterprise-class 4-bay Networked Storage Server
The U4-111 is a highly scalable storage server designed for enterprise virtualization, data-intensive applications, and service continuity. It features a built-in 10Gb Ethernet port, providing up to 10Gb of high-speed bandwidth. With 4 Seagate IronWolf 6TB hard drives in RAID 0 mode, it achieves read speeds of 650MB/s and write speeds of 670MB/s. Users can enjoy these top-tier speeds without upgrading their existing Cat6/6A network architecture. Ideal for professional users, it meets the demands of 4K video editing, large data handling, and strict speed requirements

  • CPU: Intel Quad-Core 1.5 GHz CPU
  • Built-in: 4 GB RAM, 2 Gigabit Ethernet Port
  • Bays: 4-Bay High Performance NAS
SKU: U4-111 Categories: ,

Product Description

Processor
Processor Model Intel® Celeron® J3455
Processor Architecture X.86 64-bit
Processor Frequency Quad Core 1.5 GHz (Max burst up to 2.3 GHz)
CPU Single-Core Score /
Hardware Encryption Engine √
Hardware Transcoding Engine H.264, H.265, MPEG-4, VC-1; maximum resolution: 4K (4096 x 2160); maximum frame rate per second (FPS): 60
Memory
System Memory 4GB
Pre-installed Memory module 4GB (1 x 4GB)
Total Memory Slot Number 1 (DDR3 SODIMM)
Maximum Supported Memory /
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
2.5″ SATA HDD
2.5″ SATA SSD
2280 M.2 NVMe Slot Number /
Maximum Internal Raw Storage Capacity 80TB (20TB x4) (Capacity may vary by RAID types)
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
RJ-45 2.5GbE Network Jack /
RJ-45 10GbE Network Jack 1
 SFP+ 10GbE Network Jack /
USB3.0 Host Port 2
USB2.0 Host Port /
COM /
HDMI 1
VGA /
PCIe Slots /
M.2 2280 NVMe Slot /
Appearance
Size (H*W*D) 440*550 *45mm
Packaging Size (H*W*D) 710*580 *180  mm
Weight 12 kg
Others
System Fan 40 x 40 x 28mm  3PCS
Fan Mode Smart, High speed, Middle speed, Low speed
Noise Level 34.5 dB(A)
Power Supply 250W
Redundancy Power Supply /
AC Input Voltage 100V – 240V AC
Current Frequency 50/60 Hz, Single frequency
Power Consumption 35.2W(Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in read/write state)
13.9 W (Fully loaded Seagate 4TB ST4000VN008 hard drive(s) in hibernation)
Limited warranty 2 years
Certificate FCC, CE, CCC, KC
Environment RoHS, WEEE
Temperature
Working Temperature 0°C  ~ 40°C (32°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(a few)
TOS Features
OS Supported
Supported Client OS Windows OS, Mac OS, Linux OS
Supported Web Browsers Google Chrome 97.0.xxxx, Mozilla Firefox 9.3,Apple Safari 12.1 ; Microsoft Edge 99.0.xx or later version.
Supported mobile OS iOS12.0, Android 9.0 or later version
Storage Management
Supported RAID Types Single, JBOD, RAID 0, RAID 1, RAID5, RAID 6, RAID 10
Maximum Internal Volume Number 256
Maximum iSCSI Target 128
Maximum iSCSI LUN 256
Volume Expansion with Larger HDDs RAID 1,RAID5,RAID 6,RAID10
Volume Expansion by Adding a HDD RAID5,RAID6
RAID Migration √
SSD Cache √
Hot Spare √
SSD TRIM √
Hard Drive S.M.A.R.T. √
Seagate IHM √
NVRAM write cache(BBU-protected) /
Shared Folder Snapshot √
LUN Snapshot /
File Services
File Protocol SMB/AFP/NFS/FTP/SFTP/WebDAV
Maximum Concurrent SMB/AFP/FTP/SFTP Connections 500
Windows Access Control List (ACL) Integration √
NFS Kerberos Authentication √
Account & Shared Folder
Maximum local user’s account number 2048
Maximum local group number 512
Maximum shared folders number 512
Maximum shared folders syncing tasks 8
Backup
Rsync Backup √
Duple Backup √
Centralized Backup √
Snapshot √
USB  Backup √
Cloud Sync √
Time Machine Backup √
File System Snapshot √
TFM Backup √
Networking
TCP/IP IPv4/IPv6
Protocols CIFS/SMB, NFS, FTP, SFTP, HTTPS, SSH, iSCSI, SNMP
Link Aggregation /
DLNA Compliance √
VPN Client √
VPN Server √
Proxy Client √
Proxy Server /
UPnP/Bonjour Discovery √
TNAS.online Remote Access √
DDNS √
Access Right Management
Batch users creation /
Import/Export users /
User Quota Managerment √
Local user access control for CIFS/SAMBA and FTP √
Domain Authentication
AD Domain √
LDAP Client √
LDAP Server /
Security
Firewall Protection √
Account Auto-block Protection √
AES Volume and Shared Folder Encryption √
Importable SSL certificate √
Instant Alert via email, Desktop Notification, Beep √
RSA 2048 Encryption（TOS 5.0）
PAM (Pluggable Authentication Modules) √
OTP Authentication（TOS 5.0） √
HyperLock File System √
Power Managerment
Power Resume √
Scheduled Power On/Off √
Wake up On LAN（WOL） √
UPS Supported √
Administration
Multi-window, Multi-task System Management √
Custom Desktop √
Control Panel √
Resource Monitor √
Syslog √
OS UI Language English,German, French, Spanish, Italian, Magyar, Chinese,Japanese,Korean，Turkish, Portuguese, Russian
Applications
Application Center √
iSCSI Target √
Terra Photos √
TerraSync √
Duple Backup √
CloudSync √
Centralized Backup √
USB Backup √
VPN Server √
Transmission √
qBittorent √
Aria 2 √
Terra Search √
Deduplication √
Web Server √
Clam Antivirus √
EMBY √
Multi Media Server √
Plex Media Server √
Docker Manager √
Snapshot √

Additional information

U4-111

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.

10Gb Ethernet Port

The U4-111’s built-in 10Gb Ethernet port provides up to 10Gb of high-speed bandwidth. With 4 Seagate IronWolf 6TB hard drives in RAID 0 mode, the device’s read and write speeds can reach 650MB/s and 670MB/s, respectively. Even without replacing the existing Cat6/6A cable’s network architecture, users can benefit from these rapid and best-in-class speeds. The device was designed with professional users in mind, including 4K video editors and users with large data and strict speed requirements.

Fast and stable

Equipped with two network interfaces and the Link Aggregation function, the server access will not be interrupted even if a network interface fails online, greatly reducing the probability of online interruption without warning. In addition, the Link Aggregation function breaks through the limitation of network transmission speed of a single network interface and has the on-load balancing function of automatically balancing network traffic, thus providing stable data transmission for customers.

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.

Virtual Machines

Virtual machines allow you to always test new software in the sandbox, isolate your customers' machines, and increase the flexibility of your servers. In just a few steps, you can run the Windows and Linux operating systems on TNAS.

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.

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