Designed for High Performance Requirements
The 4-Bay F4-423 is suitable for SMB users who need high-performance storage solutions. High performance means that users can easily handle high-load workflows, while multiple business-level backup solutions guarantee data safety and safeguard against the risk of data loss.

Excellent Performance
This is a high-performance storage solution that provides a virtual storage and database service for SMB users. It uses an Intel Celeron N5095 quad-core processor with 2.0 GHz and a maximum turbo of 2.9 GHz. It is integrated with a GPU graphics card and AES NI hardware encryption. In addition, it is equipped with two 2.5 GbE interfaces and a 4 GB DDR4 dual-channel memory (expandable up to 32 GB). Moreover, this storage solution is internally installed with 2 M.2 NVMe slots, which accelerate SSD caching and double the storage efficiency of your RAID.

Faster Application Response
The performance of the F4-423 surpasses that of previous generations, offering a 50% improvement that transforms the handling of high-load workflows. Moreover, is offers a 37% increase in file and phot retrieval speeds, a 35% increase in database response speeds, and a 40% increase in webpage PHP response speeds.

Faster Application Response
The performance of the F4-423 surpasses that of previous generations, offering a 50% improvement that transforms the handling of high-load workflows. Moreover, is offers a 37% increase in file and phot retrieval speeds, a 35% increase in database response speeds, and a 40% increase in webpage PHP response speeds.

Powerful Multimedia Service
With 4K video decoding capability, the F4-423 is compatible with uPnP/DLNA protocol and can stream videos to various multimedia devices, including computers, smart phones, media players and televisions, by using TerraMaster’s proprietary application Multimedia Server or the one from another third-party, to deliver users constant, reliable entertainment experiences.

Flexible Storage Configuration
The F4-423 supports various RAID types including Single/RAID 0/1/5/6/10. It offers online capacity expansion and online migration for RAID types. Hot Spare can be configured for the disk array. It supports the creation of multiple storage spaces, and ext 4 or BTRFS file systems can be selected in accordance with various business requirements. When used in conjunction with TerraMaster USB DAS devices, the F4-423 has the ability to flexibly expand storage capacity.

Professional Operating System
TNAS runs on TOS, a TerraMaster operating system developed based on Linux. Extensive research into the needs of various business users and the resultant continued evolution of multiple TOS generations has enabled it to integrate all-round professional storage management functions including network management, permission management, storage management, and resource monitoring via user-friendly, intuitive, and flat web interfaces. It also provides hundreds of free apps for the app market.

Across-Platform File Services
The ability of the F4-423 to support most file services (SMB, AFP, SFTP/FTP, iSCSI, NFS, and WebDAV) enables it to successfully address the across-platform file service needs of different network environments. Moreover, the F4-423 supports Windows AD domain and LDAP, thereby facilitating the incorporation of the existing IT environments of business users and improving management efficiency. The presence of permission management at the level of users, user groups, and file directories means that the F4-423 can satisfy the comprehensive requirements of business users for inter-departmental collaboration and data security.

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.
Centralized Backup: Backup for servers, virtual machines, employee PCs, and file servers can be initiated at the TNAS end, thus facilitating the rapid restoration of data after incidents.
Duple Backup: In order to provide several offsite backup versions, Duple Backup provides advanced data protection by backing up files to another remote TNAS, file server, or cloud drive.
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.
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.

Virtualized Applications
The F4-423 satisfies virtualized application needs and provides additional functionality within one device with the use of professional virtualized apps, including VirtualBox and Docker, and by cooperating with Docker-compose and Portainer. This lowers the cost of corporate investment in IT.

System Level Security Protection
Increased cyberattacks mean that the system security of network devices security system are obliged to address considerable challenges. TOS enables various systematic safeguards, such as pam identity authentication, AES 256 encryption, automatic account lockout, anti-DoS attack, and firewall. Hence, it effectively reduces the risks of malicious attacks on your devices.

Multiple Commercial Applications
TNAS allows business users to easily build file servers, mail servers, web servers, FTP servers, MySQL databases, CRM, Node.js, Java VMs, and many other services, thereby satisfying the commercial requirement of various SMBs in such fields as education, consulting, finance, scientific research, and law.

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.