TerraMaster F6-424 Review: A Six-Bay Intel N95 NAS for Media and Backup

Verdict: The TerraMaster F6-424 suits home media collectors, Plex users and home offices that need six drive bays, Intel hardware transcoding and upgradeable memory without moving to a business-focused NAS. A NAS (network-attached storage, an always-on storage device) connects to a router and provides shared storage for computers, phones and media players. Think of it as a central filing cabinet that every approved device can open.

Choose the F6-424 if six bays, Plex support and hardware value matter most. Look elsewhere if you need business support, error-correcting memory, 10GbE or the most polished NAS software.

F6-424 Specifications

Who the F6-424 Is For

The F6-424 is for a home media collector, Plex user or home-office buyer whose four-bay system is full or whose storage plan now requires six bays. Six bays allow capacity and drive-failure protection to be balanced more flexibly than a smaller enclosure, although the drives and backup system remain separate purchases.

Its strongest fit is a large Plex library where some playback devices or remote connections require video conversion. It also suits a home office that needs shared files, computer backups, snapshots and several server applications on one box.

It is less suitable when storage is business-critical and rapid support, a longer warranty, ECC memory or faster future networking matters more than initial value. Buyers comparing software maturity and support expectations can examine the Synology and TerraMaster comparison or the QNAP and TerraMaster comparison.

Hardware: Intel N95, DDR5 and Six Bays

The Intel N95 has four cores and can burst up to 3.4 GHz, giving this NAS an x86 processor suited to file services, media applications and compatible containers. X86 is a processor instruction architecture commonly used in computers, much like a shared language that lets a wide range of software give the hardware directions.

The installed 8 GB of DDR5 can be replaced with a module up to 32 GB. DDR5 is a generation of working memory used to hold active application data, like a larger workbench that keeps current jobs within reach. There is only one memory slot, so an upgrade replaces the supplied module rather than adding a second one.

The memory is non-ECC. ECC, or error-correcting code memory, can detect and correct certain memory errors, acting like a proofreader that catches a mistyped character before it enters the final document. Its absence is acceptable for many home media systems, but it is a meaningful limitation for buyers prioritising business-grade data integrity.

The six tool-free trays accept 3.5-inch or 2.5-inch SATA hard drives and 2.5-inch SATA solid-state drives. Hot swapping means a supported drive can be removed while the NAS remains on, rather like changing one wheel on specialised machinery without shutting down the whole production line. TerraMaster lists a maximum internal raw capacity of 132 TB using six 22 TB drives, before RAID protection reduces usable space.

Plex and Media Streaming

The F6-424 supports Plex hardware-accelerated transcoding across common media scenarios, but 4K support has important output limits. Transcoding (converting video in real time because the receiving device or connection cannot handle the original) works like a kitchen adapting one prepared meal for a diner with different requirements.

Need to Know IT reviewed the specifications published by TerraMaster (a Chinese NAS manufacturer) and the compatibility list published by Plex (a media server app for streaming your own films and TV to your devices). Plex lists software transcoding support for SD and 720p, some support for 1080p, and no software transcoding support for 4K. With hardware acceleration, it lists support for SD, 720p and 1080p, SDR-only support for 4K H.264, and H.264 output for 4K HEVC SDR and HDR sources.

H.264 output means the NAS can convert the listed 4K HEVC source, but the stream sent to the player is H.264. That distinction matters because it describes conversion support, not unrestricted output in the source format. Hardware-accelerated transcoding requires Plex Pass and the 64-bit Plex Media Server version, and Plex lists no external GPU support for this NAS.

Direct play is when Plex sends the original file without converting it, like serving a sealed meal exactly as it arrived. It normally places less processing demand on the NAS, so compatible televisions and streaming boxes remain preferable to unnecessary transcoding. The Plex hardware transcoding guide explains how codecs, clients and remote bandwidth affect the result.

The HDMI 2.0b port provides a physical display connection, while TerraMaster also lists Plex Media Server and Emby among its applications. TerraMaster lists a hardware transcoding engine for H.264, H.265, MPEG-4 and VC-1 at up to 4K resolution, but that specification should not be mistaken for a promise that every media application can convert every file.

Storage, RAID and SSD Cache

The F6-424 supports conventional RAID choices and TerraMaster's flexible TRAID formats. RAID is a method of spreading data across drives so selected configurations can survive a drive failure, like distributing a document across several guarded lockers rather than leaving the only copy in one.

The available layouts are TRAID, TRAID+, Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10. TRAID is TerraMaster's flexible array system for online capacity expansion, migration and redundant drive configuration. Think of it as adjustable shelving that can be rearranged more easily as larger storage boxes are introduced.

TRAID, TRAID+, RAID 5, RAID 6 and RAID 10 support volume expansion with larger drives. The right choice depends on required usable capacity, tolerance for drive failure and the time needed to restore data, so the RAID explainer should be read before committing important files to an array.

RAID is not a backup because deletion, corruption, theft or a failure affecting the whole NAS can still remove the accessible copy. Keep another copy on separate storage and, for important data, another copy in a different location.

Two M.2 2280 slots accept NVMe drives through PCIe 3.0 x1 connections. M.2 describes the compact physical card format, while NVMe is a fast solid-state storage format, together resembling a small express parcel placed onto a dedicated delivery lane. PCIe is the internal connection standard carrying that traffic, like the road joining the express depot to the rest of the system.

TerraMaster supports SSD cache, which keeps frequently requested data on faster solid-state storage. It works like a small, quick front counter holding popular items in front of a much larger hard-drive warehouse. The x1 connection limits each M.2 slot to one PCIe lane, so buyers should assess the workload rather than assuming premium NVMe drives will deliver their full advertised capability; the SSD cache guide provides that decision framework.

The internal file-system choices are Btrfs (a modern file system that supports snapshots) and EXT4 (a long-established Linux file system). A file system is the set of rules used to organise and locate stored data, much like a library catalogue determines where books belong and how they are found. Shared-folder snapshots create point-in-time records, functioning like save points that can help return selected data to an earlier state.

TOS 7 Software, Apps and Backup

TOS 7 is TerraMaster's operating system for configuring storage, users, applications and backups. An operating system is the NAS's control layer, like a building manager coordinating rooms, keys and services from one desk. TOS covers the main home and home-office functions, although its application ecosystem and community are smaller than those of the biggest NAS brands.

TerraMaster lists Plex Media Server, Emby, Terra Photos, TerraSync and Clam Antivirus among the available applications. Backup options include Duple Backup, CloudSync, Centralized Backup, USB Backup and Time Machine backup, while TNAS.online provides remote access.

Docker Manager is also listed. Docker is software that runs applications in isolated containers without changing the core operating system, like placing different workshops in separate units so their tools and supplies do not become mixed. It expands the range of services a technically confident owner can run, but those services still require maintenance, updates and backup; see the Docker and virtualisation guide before treating containers as set-and-forget appliances.

TOS includes VPN Server and supports pairing the NAS with TerraMaster USB direct-attached storage units. These capabilities help with remote connectivity and external expansion, but they do not remove the need for a documented backup and recovery plan.

Networking and Expansion

The two 2.5GbE ports provide faster local networking than a basic gigabit connection when the switch, computers and cabling also support it. 2.5GbE means Ethernet rated at 2.5 gigabits per second, like widening a local road so more data can move between the NAS and other devices at once.

Link aggregation is supported, meaning both network ports can be grouped for compatible network setups. It is like opening two checkout lanes for several customers: total traffic can be spread across them, but one customer's trolley does not automatically move twice as fast. A suitable managed switch and configuration are required to use this feature meaningfully.

There is no 10GbE (10-gigabit Ethernet, four times the rated speed of 2.5GbE) port and no PCIe expansion slot. PCIe is an internal expansion connection used for additions such as network cards, similar to a spare wall socket reserved for future equipment. With no such slot, the F6-424 has no internal upgrade path to a 10GbE network card.

External connections include one 10 Gbps Type-A USB port, one 10 Gbps Type-C USB port and HDMI 2.0b. These cover external storage and display connectivity, but they do not compensate for the fixed network ceiling when a future workload genuinely needs 10GbE.

Limitations to Know Before You Buy

The F6-424's main compromises are software maturity, restricted expansion and a shorter warranty. TOS provides the core storage, media, backup and container functions, but buyers coming from the largest NAS ecosystems may find fewer applications, community guides and support resources.

Memory can reach 32 GB, but the single slot requires the installed 8 GB module to be removed. That memory is non-ECC, the M.2 slots use PCIe 3.0 x1, and the missing PCIe slot rules out a later internal 10GbE upgrade.

TerraMaster's 22.0 dB(A) noise figure was measured with M.2 SSDs in standby mode at one metre. It is not a measurement of six hard drives operating, so it should not be used to predict how the NAS will sound when fully populated. Drive selection, workload, fan behaviour and placement will affect the real experience.

Australian Buyers: What You Need to Know

The TerraMaster F6-424 has a market price of about $999. Check the retailer before you buy, as prices move. It is listed by a small number of Australian computer retailers, so stock can be patchy.

The practical budget must include the NAS, compatible drives, any memory or SSD upgrade, backup storage and network equipment. Add each product's current price, then compare configurations using usable capacity after the chosen RAID layout rather than raw drive capacity. For electricity, multiply measured watts by operating hours and your electricity rate, or use the NAS power calculator.

TerraMaster lists a two-year limited warranty, shorter than the three years common among NAS makers; the Australian NAS warranty and returns guide explains who to contact and what to ask before purchasing. Your first step for a faulty product is usually the retailer that sold it. The ACCC explains your rights under the Australian Consumer Law at accc.gov.au.

The two 2.5GbE ports are far faster than any home NBN upload, so Plex streaming outside the home will usually be limited by the internet plan's upload capacity. CGNAT (Carrier-Grade Network Address Translation) is a cost-saving arrangement in which an internet provider places several customers behind one public address, like an apartment building sharing a street entrance. It can block direct inbound connections, while TNAS.online can provide an alternative path; the remote-access guide covers the trade-offs.

The NAS is rated for operation at ambient temperatures from 0 to 40°C, but six drives in a hot Australian room or cupboard still need airflow; use the NAS noise and placement guide when choosing its location.

Verdict

The F6-424 earns its place on a six-bay shortlist through its Intel N95, upgradeable DDR5 memory, two M.2 slots, dual 2.5GbE and detailed Plex compatibility. Its best use is a growing home media library or home-office storage workload where six bays and hardware value outweigh the benefits of a larger software and support ecosystem.

The TerraMaster F6-424 has a market price of about $999. Its value case holds when the buyer can accept TOS, a two-year warranty, non-ECC memory and no route to 10GbE. Buyers needing business-grade support, ECC or faster future expansion should look elsewhere.

This is a researched assessment based on TerraMaster's specification table and Plex's compatibility sheet, not hands-on testing. The most important practical finding is that Plex lists hardware conversion for 4K HEVC sources with H.264 output, rather than unrestricted 4K transcoding in every format.

Related reading: our NAS buyer's guide and our AU retailer guide.

Can the F6-424 transcode 4K in Plex?

Yes, within Plex's documented limits and with Plex Pass plus the 64-bit server version. Plex lists hardware acceleration as SDR-only for 4K H.264 and H.264 output for 4K HEVC SDR and HDR sources. That means a supported HEVC source can be converted, but the outgoing stream is H.264. Plex lists no 4K software-transcoding support for this NAS.

How much memory can the F6-424 take?

The NAS includes 8 GB of DDR5 non-ECC memory and supports up to 32 GB. It has one SODIMM slot, so upgrading requires removing the installed 8 GB module and replacing it with a larger compatible module. There is no second slot for adding memory beside the original module.

Can the F6-424 be upgraded to 10GbE?

No internal 10GbE upgrade path is specified. The NAS has two 2.5GbE ports but no 10GbE port and no PCIe expansion slot for a network card. Link aggregation can distribute traffic across both 2.5GbE connections in a compatible network, but it does not turn one client connection into 10GbE.

Is the Max version the same product?

No. The F6-424 Max is a different, separately sold model with different hardware, so check TerraMaster's product page carefully before comparing or ordering. This review assesses only the standard six-bay product named in the title.

Does the F6-424 run Docker?

Yes. TerraMaster lists Docker Manager among the applications supported by TOS. Containers can be useful for adding services beyond the standard application catalogue, but the owner remains responsible for container configuration, updates, data paths and backups. Buyers wanting a purely appliance-like experience should consider that administration requirement before relying on Docker applications.

Is the two-year warranty a problem?

It is a trade-off rather than an automatic reason to reject the NAS. TerraMaster's two-year limited warranty is shorter than the three years common among NAS makers, which matters more when the device supports important work or the buyer expects long ownership. Ask the retailer about its fault process before purchasing, and maintain an independent backup so hardware downtime does not become data loss.