TerraMaster U4-211
4-Bay Economic SOHO Network Storage

Miniaturized Rack-mounted Server

The U4-211 adopts 1U Rackmount case with a depth of only 360mm (14.17 inches) weighs merely 3.2kgs, which saves a lot of space. It features simple installation without any rail, it is applicable to most 2-column cabinets and wall-mounted small cabinets, and can be used in a machine room, storage room, staircase, office along with a plethora of other places. suitable for small office users. With a high-quality silent fan and specially optimized internal structure, the U4-211 maintains relatively low noise level when working conditions at full load.

An Abundance of Computing Power

The U4-211 uses an ARM V8.2 Cortex-A55 64-bit 1.7GHz quad-core processor, built-in floating point unit (FPU) and NEON SIMD engine, 2GB DDR4, and video DSP hardware acceleration. In addition, it possesses excellent 4K video encoding and decoding capabilities, making it able to easily meet the needs of small businesses with regards to document storage, data backup, and even 4K video transcoding.

New Operating System

U4-211 runs the new operating system TOS 5, which adds more than 50 new functions and 600 improvements compared with the previous generation. The new features meet more business requirements, as well as significantly improving response speed, security, and ease of use.

An Abundance of Data Storage Space

The U4-211 supports up to 20TB of hard drive, and the total capacity can reach 80TB. It can store 30 million HD photos, 18 million working documents, 40,000 HD movies, and 4 million downloadable music, enabling you to back up the data in Windows PC, MAC computer, mobile phone, HDD enclosure, and network disk to TNAS for centralized management. This adequately protects users from data loss resulting from hardware malfunction or ransomware.

Flexible Storage Space Management

TRAID is the abbreviation of TerraMaster RAID. TRAID is a flexible disk array management tool developed by TerraMaster. It has features such as the automatic combination of disk space, hard disk failure redundancy protection, and automatic capacity expansion. All these functions do not require manual configuration by the user, and the system will automatically complete the configuration according to the properties of the hard disk. TRAID provides users with an optimized, flexible and elastic disk array management solution, especially suitable for new users who are not proficient in how to configure a disk array.

Across-Platform File Services

The U4-211 supports all mainstream file services: SMB, NFS, SFTP/FTP, AFP, iSCSI, WebDAV; and is provided with multiple permission management of users, user groups, and folder, meeting across-platform file services in various network environments.

No Fear of Ransomware Attacks

The TerraMaster File System Snapshot (TFSS) is a data protection tool founded upon on file system developed by TerraMaster. The TFSS takes snapshots of an entire file system by exploiting advantages of the features of the BTRFS file system, as such all the data on your TNAS device will be protected. In case of an accident, one just simply clicks the snapshot list to recover the data in an instant, without the risk of human error or ransomware attacks.

Rich Backup Solutions

TOS can protect valuable data using visual user interfaces and trustworthy storage solutions thanks to its integration with multiple backup applications that can address backup needs in an array of circumstances.
Time Machine Backup: Allows macOS users to back up data on MAC computers, manage folder storage quotas, and selectively restore data based on the previous version of the backed up data as per timeline.
TerraSync: It's not only suitable for data synchronization among various clients for realizing version management of synchronized data, but it also can help Windows computer users to realize the multi-version backup of computer data.
TerraMaster File System Snapshot (TFSS): TFSS takes snapshots of entire file system of a TNAS device by reaping the benefits of the features of the file system, so as to avoid data loss caused by misoperations or ransomware attacks.
TFM Backup: With TFM Backup, one can easily back up shared folders in TNAS or to a wide range of various local storage locations or even to a remotely mounted folder.
CloudSync: This backs up or synchronizes TNAS data with the cloud drive, which not only improves the availability of cloud data, but also provides several offsite backup versions, thus safeguarding the security of your data.
Snapshot: It is possible to take continuous snapshots of your folders or iSCSI LUNs by enabling the snapshot schedule with the advanced storage technology and optimized snapshot technology available via the BTRFS file system. When problems arise, the system can roll back to points-in-time and restore to the last backup, thereby ensuring that your data is well protected.
Duple Backup: In order to provide several offsite backup versions, Duple Backup provides advanced data protection by backing up files in TNAS to another remote TNAS, file server, or cloud drive.

Building a Convenient and Safter Private Cloud

With TNAS.online service of TerraMaster, one can easily access files from TNAS over the Internet without setting additional port forwarding rules, DDNS, or other complex network settings. One can assign different access right to relatives or friends to share one’s enjoyment at no extra cost. Free CloudSync supports the two-way synchronization function of Baidu Cloud, Google Drive, Dropbox, Amazon S3, OneDrive, NextCloud, Pcloud, Backblaze B2 and many other cloud drives, This permits one to easily open the data channel between your private cloud and public cloud drive, and enjoy the convenience of cloud life.

Improved Desktop Assistant

For convenience, the desktop client specially developed by TerraMaster for Windows and MAC can help one quickly find devices in the network, create a quick access connection, browse files through a single click, and get technical support in a rapid manner. Furthermore, it entails data synchronization and backup, making it a sufficient tool to assist computer users.

Building a Secure Access Channel

One can upgrade their network security protection level through private data access channel provided by VPN servers. The TerraMaster VPN server offers three modes of VPN services, namely PPTP, OpenVPN, and L2TP/IPsec. It is applicable to VPN connections for most network devices.

Improving IT Management Efficiency

The U4-211 connects to your domain server through the AD domain or LDAP domain and assigns storage space access rights to your domain users and user groups, in essence reducing IT management costs whilst also ameliorating the efficiency of staff.

Home Multimedia Center

The U4-211 features powerful 4K video hardware decoding capability, and is compatible with uPnP/DLNA protocol. With TerraMaster’s dedicated "Multimedia Server" app or third-party multimedia servers (Emby, Plex), it can stream videos to a variety of multimedia devices including smart phones, tablets, Roku, Apple TV, Google Chromecast, Amazon Fire TV, and smart TV, delivering users constant, reliable entertainment experiences.

Rich Multimedia Applications

TerraMaster App Center provides a variety of tools free of charge, including Aria2, qBittorrent, and Transmission, allowing you to manage the document transmission and video download at a high speed in a convenient manner. Various multimedia applications including Multimedia Server, Plex, Emby, Terra Photos, iTunes Server are supported making is more feasible to manage, share and play family movies, photos and music.

AI Album Management

Terra Photos has an AI image recognition engine, which can recognize faces and objects in photos, and automatically form photo albums of "People" and "Objects" with similarly appearing people and objects. Meanwhile, it can also classify photos via location automatically. One can quickly find photos taken in various locations in the "Location Album", which reflects a more intuitive and fluent photo management and sharing experience.

Worry-free After-sales Service

TerraMaster implements its unique after-sales service policy that "provides replacements within 2 years" and offers worry-free quality assurance through real-time online customer service, a professional technical forum, an online user guide, a technical service mailbox, and remote troubleshooting.